セキュリティの問題を修正する更新済みのカーネルパッケージが、現在利用可能です。

Red Hat セキュリティレスポンスチームは、この更新に重大なセキュリティインパクトがあると評価しています。

Linux カーネルで、オペレーティングシステムの基本関数を処理します。

これらの新しいカーネルパッケージには、以下に説明するセキュリティ問題の修正が含まれています。


Red Hat セキュリティアドバイザリ 2006-0617 から：

* proc ファイルシステムの欠陥により、ローカルユーザーがスクリプトの suid-wrapper を使用し、root 権限を入手する可能性があります（CVE-2006-3626、重要度高）

* SCTP 実装の欠陥により、ローカルユーザーがサービス拒否（パニック）を引き起こたり、root 権限を入手する可能性があります（CVE-2006-3745、重要度高）

* NFS の欠陥が無効な inode を処理する際に ext2/ext3 パーティションをエクスポートしました。これにより、認証されたリモートのユーザーが、サービス拒否（ファイルシステムパニック）を引き起こす可能性があります（CVE-2006-3468、重要度高）

* non-hugemem カーネルの 4/4GB スプリットサポートの restore_all コードパスにある欠陥により、ローカルユーザーがサービス拒否（パニック）を引き起こす可能性があります（CVE-2006-2932、重要度高）

* SNMP NAT 処理がおそらく使用されないことに対する IPv4 netfilter 処理にある欠陥により、リモートのユーザーがサービス拒否（クラッシュ）またはメモリ破損（CVE-2006-2444、重要度中）を引き起こす可能性があります

* root 権限を取得するためにカスタムビルドの USB デバイスと併用される可能性がある CDROM ドライバーの DVD 処理の欠陥（CVE-2006-2935、重要度中）

* O_DIRECT 書き込みの処理にある欠陥により、ローカルのユーザーがサービス拒否（メモリ消費）を引き起こす可能性があります（メモリ破損）（CVE-2004-2660、重要度低）

* SCTP チャンクの長さの処理の欠陥により、リモートユーザーがサービス拒否（クラッシュ）を引き起こすことを可能性があります（CVE-2006-1858、重要度低）

* ftdi_sio ドライバーの入力処理にある欠陥により、ローカルのユーザーがサービス拒否（メモリ消費）を引き起こす可能性があります（CVE-2006-2936、重要度低）

さらに、バグ修正が追加され、IBM Pizzaro マシンのクリーンリブートが有効にされました。

Red Hat は、このエラータで修正された問題を報告してくれた McAfee Avert Labs の Wei Wang 氏と Kirill Korotaev 氏に感謝の意を表します。


Red Hat セキュリティアドバイザリ ELSA-2006-0689 から：

* SCTP サポートに欠陥があり、ローカルユーザーが特定の SO_LINGER の値でサービス拒否（クラッシュ）を引き起こす可能性があります。
（CVE-2006-4535、重要度高）

* hugepage テーブルサポートに欠陥があり、ローカルユーザーがサービス拒否（クラッシュ）を引き起こす可能性があります。（CVE-2005-4811、重要度高）

* mprotect システムコールの欠陥により、共有メモリの読み取り専用添付ファイルで書き込み権限が設定される可能性がありました。
（CVE-2006-2071、重要度中）

* PowerPC 970 の HID0[31]（en_attn）レジスター処理における欠陥により、ローカルユーザーがサービス拒否を発生させることができます。
（クラッシュ）（CVE-2006-4093、重要度中）

* Itanium システムの perfmon サポートにある欠陥により、ローカルユーザーが、すべてのファイル記述子を消費することにより、サービス拒否を引きこす可能性があります。（CVE-2006-3741、重要度中）

* ATM サブシステムでの欠陥。ATM ハードウェアがインストールされ、ATM サポートが構成されているシステムで、解放後にソケットバッファメモリにアクセスすることにより、リモートユーザーがサービス拒否（パニック）を引き起こす可能性があります。
（CVE-2006-4997、重要度中）

* DVB サブシステムでの欠陥。DVB ハードウェアがインストールされ、DVB サポートが構成されているシステムで、長さが 0 の ULE SNDU パケットを送信することにより、リモートユーザーがサービス拒否（パニック）を引き起こす可能性があります。
（CVE-2006-4623、重要度低）

* ネットワークサブシステムに情報漏洩が存在するため、ローカルユーザーが機密データをカーネルメモリから読み取る可能性がありました。（CVE-2006-0039、重要度低）

さらに、IPW-2200 ワイヤレスドライバーに対する 2 つのバグ修正が含まれています。最初の修正はワイヤレス管理アプリケーションが IPW-2200 コントロールデバイスを適切に識別することを保証し、2 つ目の修正は IPW-2200 を使用する DHCP リクエストが適切に操作されることを保証します。

Red Hat は、このエラータで修正された問題を報告してくれた Olof Johansson 氏、Stephane Eranian 氏、Solar Designer 氏に感謝の意を表します。

An integer overflow was discovered in the do_replace() function. A local user process with the CAP_NET_ADMIN capability could exploit this to execute arbitrary commands with full root privileges. However, none of Ubuntu's supported packages use this capability with any non-root user, so this only affects you if you use some third party software like the OpenVZ virtualization system. (CVE-2006-0038)

On EMT64 CPUs, the kernel did not properly handle uncanonical return addresses. A local user could exploit this to trigger a kernel crash.
(CVE-2006-0744)

Al Viro discovered a local Denial of Service in the sysfs write buffer handling. By writing a block with a length exactly equal to the processor's page size to any writable file in /sys, a local attacker could cause a kernel crash. (CVE-2006-1055)

Jan Beulich discovered an information leak in the handling of registers for the numeric coprocessor when running on AMD processors.
This allowed processes to see the coprocessor execution state of other processes, which could reveal sensitive data in the case of cryptographic computations. (CVE-2006-1056)

Marcel Holtmann discovered that the sys_add_key() did not check that a new user key is added to a proper keyring. By attempting to add a key to a normal user key (which is not a keyring), a local attacker could exploit this to crash the kernel. (CVE-2006-1522)

Ingo Molnar discovered that the SCTP protocol connection tracking module in netfilter got stuck in an infinite loop on certain empty packet chunks. A remote attacker could exploit this to cause the computer to hang. (CVE-2006-1527)

The SCSI I/O driver did not correctly handle the VM_IO flag for memory mapped pages used for data transfer. A local user could exploit this to cause a kernel crash. (CVE-2006-1528)

The choose_new_parent() contained obsolete debugging code. A local user could exploit this to cause a kernel crash. (CVE-2006-1855)

Kostik Belousov discovered that the readv() and writev() functions did not query LSM modules for access permission. This could be exploited to circumvent access restrictions defined by LSM modules such as SELinux or AppArmor. (CVE-2006-1856)

The SCTP driver did not properly verify certain parameters when receiving a HB-ACK chunk. By sending a specially crafted packet to an SCTP socket, a remote attacker could exploit this to trigger a buffer overflow, which could lead to a crash or possibly even arbitrary code execution. (CVE-2006-1857)

The sctp_walk_params() function in the SCTP driver incorrectly used rounded values for bounds checking instead of the precise values. By sending a specially crafted packet to an SCTP socket, a remote attacker could exploit this to crash the kernel. (CVE-2006-1858)

Bjoern Steinbrink reported a memory leak in the __setlease() function.
A local attacker could exploit this to exhaust kernel memory and render the computer unusable (Denial of Service). (CVE-2006-1859)

Daniel Hokka Zakrisson discovered that the lease_init() did not properly handle locking. A local attacker could exploit this to cause a kernel deadlock (Denial of Service). (CVE-2006-1860)

Mark Moseley discovered that the CIFS file system driver did not filter out '..\\' path components. A local attacker could exploit this to break out of a chroot environment on a mounted SMB share.
(CVE-2006-1863) The same vulnerability applies to the older smb file system. (CVE-2006-1864)

Hugh Dickins discovered that the mprotect() function allowed an user to change a read-only shared memory attachment to become writable, which bypasses IPC (inter-process communication) permissions.
(CVE-2006-2071)

The SCTP (Stream Control Transmission Protocol) driver triggered a kernel panic on unexpected packets while the session was in the CLOSED state, instead of silently ignoring the packets. A remote attacker could exploit this to crash the computer. (CVE-2006-2271)

The SCTP driver did not handle control chunks if they arrived in fragmented packets. By sending specially crafted packets to an SCTP socket, a remote attacker could exploit this to crash the target machine. (CVE-2006-2272)

The SCTP driver did not correctly handle packets containing more than one DATA fragment. By sending specially crafted packets to an SCTP socket, a remote attacker could exploit this to crash the target machine. (CVE-2006-2274)

The SCTP driver did not correcly buffer incoming packets. By sending a large number of small messages to a receiver application that cannot process the messages quickly enough, a remote attacker could exploit this to cause a deadlock in the target machine (Denial of Service).
(CVE-2006-2275)

Patrick McHardy discovered that the snmp_trap_decode() function did not correctly handle memory allocation in some error conditions. By sending specially crafted packets to a machine which uses the SNMP network address translation (NAT), a remote attacker could exploit this to crash that machine. (CVE-2006-2444)

In addition, the Ubuntu 6.06 LTS update fixes a range of bugs.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

更新后的 kernel 程序包修复了多个安全问题，现在可用。

Red Hat 安全响应团队将此更新评级为具有重要安全影响。

Linux 内核处理操作系统的基本功能。

这些新的内核程序包修复了以下安全问题：


来自 Red Hat 安全公告 2006-0617：

* proc 文件系统中的一个缺陷，允许本地用户使用脚本的 suid-wrapper 以获取根权限（CVE-2006-3626，重要）

* SCTP 实现中的一个缺陷，允许本地用户造成拒绝服务（混乱）或可能获取根权限（CVE-2006-3745，重要）

*处理无效 inode 时 NFS 导出 ext2/ext3 分区中的一个缺陷，允许经过认证的远程用户造成拒绝服务（文件系统错误）（CVE-2006-3468，重要）

*非 hugemem 内核的 4/4GB 拆分支持的 restore_all code 路径中的一个缺陷，允许本地用户造成拒绝服务（混乱）（CVE-2006-2932，重要）

* 不可能使用 SNMP NAT 处理的 IPv4 netfilter 处理中的一个缺陷，允许远程用户造成拒绝服务（崩溃）或潜在内存损坏（CVE-2006-2444，中危）

* CDROM 驱动程序的 DVD 处理存在一个缺陷，将该缺陷与自定义构建的 USB 设备结合使用可获得根权限（CVE-2006-2935，中危）

* O_DIRECT 写入处理中的一个缺陷，允许本地用户造成拒绝服务（内存消耗）（CVE-2004-2660，低危）

* SCTP 区块长度处理中的一个缺陷，允许远程用户造成拒绝服务（崩溃）（CVE-2006-1858，低危）

* ftdi_sio 驱动程序的输入处理中的一个缺陷，允许本地用户造成拒绝服务（内存消耗）（CVE-2006-2936，低危）

此外，还添加了一个缺陷补丁以启用 IBM Pizzaro 计算机的干净重新启动。

Red Hat 在此感谢 McAfee Avert Labs 的 Wei Wang 以及 Kirill Korotaev 报告此勘误表中修复的问题。


来自 Red Hat 安全公告 ELSA-2006-0689：

* SCTP 支持中的一个缺陷，允许本地用户使用特定 SO_LINGER 值造成拒绝服务（崩溃）。
（CVE-2006-4535，重要）

* hugepage 表支持中的一个缺陷，允许本地用户造成拒绝服务（崩溃）。（CVE-2005-4811，重要）

* mprotect 系统调用中的一个缺陷，允许为共享内存的只读附件设置写入权限。
（CVE-2006-2071，中危）

* PowerPC 970 系统的 HID0[31] (en_attn) 寄存器处理中的一个缺陷，允许本地用户造成拒绝服务。
（崩溃）（CVE-2006-4093，中危）

* Itanium 系统的 perfmon 支持中的一个缺陷，允许本地用户通过消耗所有文件描述符造成拒绝服务。（CVE-2006-3741，中危）

* ATM 子系统中存在缺陷。在安装了 ATM 硬件和配置了 ATM 支持的系统中，远程用户可通过在释放套接字缓冲区内存后对其进行访问造成拒绝服务（混乱）。
（CVE-2006-4997，中危）

* DVB 子系统中的缺陷。在安装了 DVB 硬件和配置了 DVB 支持的系统中，远程用户可通过发送长度为 0 的 ULE SNDU 数据包造成拒绝服务（混乱）。
（CVE-2006-4623，低危）

* 网络子系统中的信息泄漏，可能允许本地用户从内核内存读取敏感数据。（CVE-2006-0039，低危）

此外，还包含了两个针对 IPW-2200 无线驱动程序的缺陷补丁。第一个补丁可确保无线管理应用程序正确识别 IPW-2200 控制设备，而第二个补丁可确保使用 IPW-2200 的 DHCP 请求正确运行。

Red Hat 在此感谢 Olof Johansson、Stephane Eranian 和 Solar Designer 报告在此勘误表中修复的问题。

現已提供更新版核心套件，可修正多個安全性問題。

Red Hat 安全性回應團隊已將此更新評等為具有重要安全性影響。

Linux 核心負責處理作業系統的基本功能。

這些新的核心套件包含如下所述之安全性問題的修正：


來自 Red Hat 安全性公告 2006-0617：

* 在 proc 檔案系統中存在一個瑕疵，此瑕疵允許本機使用者將 suid-wrapper 用於指令碼，以取得 root 權限 (CVE-2006-3626，重要)

* 在 SCTP 實作中存在一個瑕疵，此瑕疵允許本機使用者造成拒絕服務 (不穩定)，或可能取得 root 權限 (CVE-2006-3745，重要)

* 處理無效 inode 時 NFS 匯出的 ext2/ext3 磁碟分割中存在一個瑕疵，此瑕疵允許經驗證的遠端使用者造成拒絕服務 (檔案系統不穩定) (CVE-2006-3468，重要)

* 在 non-hugemem 核心 4/4GB 分割支援的 restore_all 程式碼路徑中存在一個瑕疵，此瑕疵允許本機使用者造成拒絕服務 (不穩定) (CVE-2006-2932，重要)

* 在 IPv4 netfilter 對於不太可能使用 SNMP NAT 處理的處理中存在一個瑕疵，此瑕疵允許遠端攻擊者造成拒絕服務 (當機)，或可能的記憶體損毀 (CVE-2006-2444，中等)

* CDROM 驅動程式的 DVD 處理方式有一個瑕疵，可搭配自訂的 USB 裝置使用來取得 root 權限 (CVE-2006-2935，中等)

* 在 O_DIRECT 寫入的處理中存在一個瑕疵，此瑕疵允許本機使用者造成拒絕服務 (記憶體消耗) (CVE-2004-2660，低)

* 在 SCTP 區塊長度處理中存在一個瑕疵，此瑕疵允許遠端使用者造成拒絕服務 (當機) (CVE-2006-1858，低)

* 在 ftdi_sio 驅動程式的輸入處理中存在一個瑕疵，此瑕疵允許本機使用者造成拒絕服務 (記憶體消耗) (CVE-2006-2936，低)

此外，也新增了一個錯誤修正，以便讓 IBM Pizzaro 機器重新開機。

Red Hat 要感謝 McAfee Avert Labs 的 Wei Wang 和 Kirill Korotaev 報告已於此錯字勘誤表中修正的問題。


來自 Red Hat 安全性公告 ELSA-2006-0689：

* 在 SCTP 支援中存在一個瑕疵，此瑕疵允許本機使用者使用特定的 SO_LINGER 值，造成拒絕服務 (當機)。
(CVE-2006-4535，重要)

* 在 hugepage 表格支援中存在一個瑕疵，此瑕疵允許本機使用者造成拒絕服務 (當機)。(CVE-2005-4811，重要)

* 在 mprotect 系統呼叫中存在一個瑕疵，此瑕疵允許針對共用記憶體的唯讀附件設定寫入權限。
(CVE-2006-2071，中等)

* 在 PowerPC 970 系統上 HID0[31] (en_attn) 暫存器處理中存在一個瑕疵，此瑕疵允許本機使用者造成拒絕服務。
(當機) (CVE-2006-4093，中等)

* 在 Itanium 系統的 perfmon 支援中存在一個瑕疵，此瑕疵允許本機使用者透過消耗所有檔案描述符號，造成拒絕服務。(CVE-2006-3741，中等)

* ATM 子系統中有一個瑕疵。在已安裝 ATM 硬體並配置 ATM 支援的系統上，遠端使用者可能藉由在釋放通訊端緩衝區記憶體之後再次對其進行存取的方式來造成拒絕服務 (不穩定)。
(CVE-2006-4997，中等)

* 在 DVB 子系統中存在一個瑕疵。在已安裝 DVB 硬體並設定 DVB 支援的系統上，遠端使用者可透過傳送長度為 0 的 ULE SNDU 封包，造成拒絕服務 (不穩定)。
(CVE-2006-4623，低)

* 在網路子系統中存在一個資訊洩漏，此資訊洩漏可能允許本機使用者從核心記憶體讀取敏感資料。(CVE-2006-0039，低)

此外，也包含 IPW-2200 無線驅動程式的兩個錯誤修正。第一個修正可確保無線管理應用程式正確識別 IPW-2200 控制的裝置，而第二個修正則可確保使用 IPW-2200 的 DHCP 要求正常運作。

Red Hat 要感謝 Olof Johansson、Stephane Eranian 和 Solar Designer 報告已於此錯字勘誤表中修正的問題。

Memory corruption can be triggered remotely when the ip_nat_snmp_basic module is loaded and traffic on port 161 or 162 is NATed.

The provided packages are patched to fix this vulnerability. Users who may be running netfilter on important servers are encouraged to upgrade to these updated kernels.

To update your kernel, please follow the directions located at :

http://www.mandriva.com/en/security/kernelupdate

This advisory covers the S/390 components of the recent security update for the Linux 2.6.8 kernel that were missing due to technical problems. For reference, please see the text of the original advisory.

  Several security related problems have been discovered in the Linux   kernel which may lead to a denial of service or even the execution   of arbitrary code. The Common Vulnerabilities and Exposures project   identifies the following problems :

    - CVE-2004-2660       Toshihiro Iwamoto discovered a memory leak in the       handling of direct I/O writes that allows local users       to cause a denial of service.

    - CVE-2005-4798       A buffer overflow in NFS readlink handling allows a       malicious remote server to cause a denial of service.

    - CVE-2006-1052       Stephen Smalley discovered a bug in the SELinux ptrace       handling that allows local users with ptrace       permissions to change the tracer SID to the SID of       another process.

    - CVE-2006-1343       Pavel Kankovsky discovered an information leak in the       getsockopt system call which can be exploited by a       local program to leak potentially sensitive memory to       userspace.

    - CVE-2006-1528       Douglas Gilbert reported a bug in the sg driver that       allows local users to cause a denial of service by       performing direct I/O transfers from the sg driver to       memory mapped I/O space.

    - CVE-2006-1855       Mattia Belletti noticed that certain debugging code       left in the process management code could be exploited       by a local attacker to cause a denial of service.

    - CVE-2006-1856       Kostik Belousov discovered a missing LSM       file_permission check in the readv and writev       functions which might allow attackers to bypass       intended access restrictions.

    - CVE-2006-2444       Patrick McHardy discovered a bug in the SNMP NAT       helper that allows remote attackers to cause a denial       of service.

    - CVE-2006-2446       A race condition in the socket buffer handling allows       remote attackers to cause a denial of service.

    - CVE-2006-2935       Diego Calleja Garcia discovered a buffer overflow in       the DVD handling code that could be exploited by a       specially crafted DVD USB storage device to execute       arbitrary code.

    - CVE-2006-2936       A bug in the serial USB driver has been discovered       that could be exploited by a custom made USB serial       adapter to consume arbitrary amounts of memory.

    - CVE-2006-3468       James McKenzie discovered a denial of service       vulnerability in the NFS driver. When exporting an       ext3 file system over NFS, a remote attacker could       exploit this to trigger a file system panic by sending       a specially crafted UDP packet.

    - CVE-2006-3745       Wei Wang discovered a bug in the SCTP implementation       that allows local users to cause a denial of service       and possibly gain root privileges.

    - CVE-2006-4093       Olof Johansson discovered that the kernel does not       disable the HID0 bit on PowerPC 970 processors which       could be exploited by a local attacker to cause a       denial of service.

    - CVE-2006-4145       A bug in the Universal Disk Format (UDF) filesystem       driver could be exploited by a local user to cause a       denial of service.

    - CVE-2006-4535       David Miller reported a problem with the fix for       CVE-2006-3745 that allows local users to crash the       system via an SCTP socket with a certain SO_LINGER       value.

The following matrix explains which kernel version for which architecture fixes the problem mentioned above :

                              stable (sarge)                 Source                       2.6.8-16sarge5                 Alpha architecture           2.6.8-16sarge5                 AMD64 architecture           2.6.8-16sarge5                 HP Precision architecture    2.6.8-6sarge5                  Intel IA-32 architecture     2.6.8-16sarge5                 Intel IA-64 architecture     2.6.8-14sarge5                 Motorola 680x0 architecture  2.6.8-4sarge5                  PowerPC architecture         2.6.8-12sarge5                 IBM S/390                    2.6.8-5sarge5                  Sun Sparc architecture       2.6.8-15sarge5                 FAI                          1.9.1sarge4

Updated kernel packages are now available as part of ongoing support and maintenance of Red Hat Enterprise Linux version 3. This is the eighth regular update.

This security advisory has been rated as having important security impact by the Red Hat Security Response Team.

The Linux kernel handles the basic functions of the operating system.

This is the eighth regular kernel update to Red Hat Enterprise Linux 3.

New features introduced by this update include :

  - addition of the adp94xx and dcdbas device drivers -     diskdump support on megaraid_sas, qlogic, and swap     partitions - support for new hardware via driver and     SCSI white-list updates

There were many bug fixes in various parts of the kernel. The ongoing effort to resolve these problems has resulted in a marked improvement in the reliability and scalability of Red Hat Enterprise Linux 3.

There were numerous driver updates and security fixes (elaborated below). Other key areas affected by fixes in this update include the networking subsystem, the NFS and autofs4 file systems, the SCSI and USB subsystems, and architecture-specific handling affecting AMD Opteron and Intel EM64T processors.

The following device drivers have been added or upgraded to new versions :

adp94xx -------- 1.0.8 (new) bnx2 ----------- 1.4.38 cciss ---------- 2.4.60.RH1 dcdbas --------- 5.6.0-1 (new) e1000 ---------- 7.0.33-k2 emulex --------- 7.3.6 forcedeth ------ 0.30 ipmi ----------- 35.13 qlogic --------- 7.07.04b6 tg3 ------------ 3.52RH

The following security bugs were fixed in this update :

  - a flaw in the USB devio handling of device removal that     allowed a local user to cause a denial of service     (crash) (CVE-2005-3055, moderate)

  - a flaw in the exec() handling of multi-threaded tasks     using ptrace() that allowed a local user to cause a     denial of service (hang of a user process)     (CVE-2005-3107, low)

  - a difference in 'sysretq' operation of EM64T (as opposed     to Opteron) processors that allowed a local user to     cause a denial of service (crash) upon return from     certain system calls (CVE-2006-0741 and CVE-2006-0744,     important)

  - a flaw in unaligned accesses handling on Intel Itanium     processors that allowed a local user to cause a denial     of service (crash) (CVE-2006-0742, important)

  - an info leak on AMD-based x86 and x86_64 systems that     allowed a local user to retrieve the floating point     exception state of a process run by a different user     (CVE-2006-1056, important)

  - a flaw in IPv4 packet output handling that allowed a     remote user to bypass the zero IP ID countermeasure on     systems with a disabled firewall (CVE-2006-1242, low)

  - a minor info leak in socket option handling in the     network code (CVE-2006-1343, low)

  - a flaw in IPv4 netfilter handling for the unlikely use     of SNMP NAT processing that allowed a remote user to     cause a denial of service (crash) or potential memory     corruption (CVE-2006-2444, moderate)

Note: The kernel-unsupported package contains various drivers and modules that are unsupported and therefore might contain security problems that have not been addressed.

All Red Hat Enterprise Linux 3 users are advised to upgrade their kernels to the packages associated with their machine architectures and configurations as listed in this erratum.

Updated kernel packages that fix several security issues in the Red Hat Enterprise Linux 4 kernel are now available.

This security advisory has been rated as having important security impact by the Red Hat Security Response Team.

The Linux kernel handles the basic functions of the operating system.

These new kernel packages contain fixes for the security issues described below :

* a flaw in the proc file system that allowed a local user to use a suid-wrapper for scripts to gain root privileges (CVE-2006-3626, Important)

* a flaw in the SCTP implementation that allowed a local user to cause a denial of service (panic) or to possibly gain root privileges (CVE-2006-3745, Important)

* a flaw in NFS exported ext2/ext3 partitions when handling invalid inodes that allowed a remote authenticated user to cause a denial of service (filesystem panic) (CVE-2006-3468, Important)

* a flaw in the restore_all code path of the 4/4GB split support of non-hugemem kernels that allowed a local user to cause a denial of service (panic) (CVE-2006-2932, Important)

* a flaw in IPv4 netfilter handling for the unlikely use of SNMP NAT processing that allowed a remote user to cause a denial of service (crash) or potential memory corruption (CVE-2006-2444, Moderate)

* a flaw in the DVD handling of the CDROM driver that could be used together with a custom built USB device to gain root privileges (CVE-2006-2935, Moderate)

* a flaw in the handling of O_DIRECT writes that allowed a local user to cause a denial of service (memory consumption) (CVE-2004-2660, Low)

* a flaw in the SCTP chunk length handling that allowed a remote user to cause a denial of service (crash) (CVE-2006-1858, Low)

* a flaw in the input handling of the ftdi_sio driver that allowed a local user to cause a denial of service (memory consumption) (CVE-2006-2936, Low)

In addition a bugfix was added to enable a clean reboot for the IBM Pizzaro machines.

Red Hat would like to thank Wei Wang of McAfee Avert Labs and Kirill Korotaev for reporting issues fixed in this erratum.

All Red Hat Enterprise Linux 4 users are advised to upgrade their kernels to the packages associated with their machine architectures and configurations as listed in this erratum.

Updated kernel packages that fix security issues are now available. 

This update has been rated as having important security impact by the Red Hat Security Response Team. 

The Linux kernel handles the basic functions of the operating system. 

These new kernel packages contain fixes for the security issues described below :


From Red Hat Security Advisory 2006-0617 :

* a flaw in the proc file system that allowed a local user to use a suid-wrapper for scripts to gain root privileges (CVE-2006-3626, Important)

* a flaw in the SCTP implementation that allowed a local user to cause a denial of service (panic) or to possibly gain root privileges (CVE-2006-3745, Important)

* a flaw in NFS exported ext2/ext3 partitions when handling invalid inodes that allowed a remote authenticated user to cause a denial of service (filesystem panic) (CVE-2006-3468, Important)

* a flaw in the restore_all code path of the 4/4GB split support of non-hugemem kernels that allowed a local user to cause a denial of service (panic) (CVE-2006-2932, Important)

* a flaw in IPv4 netfilter handling for the unlikely use of SNMP NAT processing that allowed a remote user to cause a denial of service (crash) or potential memory corruption (CVE-2006-2444, Moderate)

* a flaw in the DVD handling of the CDROM driver that could be used together with a custom built USB device to gain root privileges (CVE-2006-2935, Moderate)

* a flaw in the handling of O_DIRECT writes that allowed a local user to cause a denial of service (memory consumption) (CVE-2004-2660, Low)

* a flaw in the SCTP chunk length handling that allowed a remote user to cause a denial of service (crash) (CVE-2006-1858, Low)

* a flaw in the input handling of the ftdi_sio driver that allowed a local user to cause a denial of service (memory consumption) (CVE-2006-2936, Low)

In addition a bugfix was added to enable a clean reboot for the IBM Pizzaro machines.

Red Hat would like to thank Wei Wang of McAfee Avert Labs and Kirill Korotaev for reporting issues fixed in this erratum.


From Red Hat Security Advisory ELSA-2006-0689 :

* a flaw in the SCTP support that allowed a local user to cause a denial of service (crash) with a specific SO_LINGER value.
(CVE-2006-4535, Important)

* a flaw in the hugepage table support that allowed a local user to cause a denial of service (crash). (CVE-2005-4811, Important)

* a flaw in the mprotect system call that allowed setting write permission for a read-only attachment of shared memory.
(CVE-2006-2071, Moderate)

* a flaw in HID0[31] (en_attn) register handling on PowerPC 970 systems that allowed a local user to cause a denial of service.
(crash) (CVE-2006-4093, Moderate)

* a flaw in the perfmon support of Itanium systems that allowed a local user to cause a denial of service by consuming all file descriptors. (CVE-2006-3741, Moderate)

* a flaw in the ATM subsystem. On systems with installed ATM hardware and configured ATM support, a remote user could cause a denial of service (panic) by accessing socket buffers memory after freeing them.
(CVE-2006-4997, Moderate)

* a flaw in the DVB subsystem. On systems with installed DVB hardware and configured DVB support, a remote user could cause a denial of service (panic) by sending a ULE SNDU packet with length of 0.
(CVE-2006-4623, Low)

* an information leak in the network subsystem that possibly allowed a local user to read sensitive data from kernel memory. (CVE-2006-0039, Low)

In addition, two bugfixes for the IPW-2200 wireless driver were included. The first one ensures that wireless management applications correctly identify IPW-2200 controlled devices, while the second fix ensures that DHCP requests using the IPW-2200 operate correctly.

Red Hat would like to thank Olof Johansson, Stephane Eranian and Solar Designer for reporting issues fixed in this erratum.

Several security related problems have been discovered in the Linux kernel which may lead to a denial of service or even the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2005-4798     A buffer overflow in NFS readlink handling allows a     malicious remote server to cause a denial of service.

  - CVE-2006-2935     Diego Calleja Garcia discovered a buffer overflow in the     DVD handling code that could be exploited by a specially     crafted DVD USB storage device to execute arbitrary     code.

  - CVE-2006-1528     A bug in the SCSI driver allows a local user to cause a     denial of service.

  - CVE-2006-2444     Patrick McHardy discovered a bug in the SNMP NAT helper     that allows remote attackers to cause a denial of     service.

  - CVE-2006-2446     A race condition in the socket buffer handling allows     remote attackers to cause a denial of service.

  - CVE-2006-3745     Wei Wang discovered a bug in the SCTP implementation     that allows local users to cause a denial of service and     possibly gain root privileges.

  - CVE-2006-4535     David Miller reported a problem with the fix for     CVE-2006-3745 that allows local users to crash the     system via an SCTP socket with a certain SO_LINGER     value.

The following matrix explains which kernel version for which architecture fixes the problem mentioned above :

                              stable (sarge)                 Source                       2.4.27-10sarge4                Alpha architecture           2.4.27-10sarge4                ARM architecture             2.4.27-2sarge4                 Intel IA-32 architecture     2.4.27-10sarge4                Intel IA-64 architecture     2.4.27-10sarge4                Motorola 680x0 architecture  2.4.27-3sarge4                 MIPS architectures           2.4.27-10.sarge4.040815-1      PowerPC architecture         2.4.27-10sarge4                IBM S/390                    2.4.27-2sarge4                 Sun Sparc architecture       2.4.27-9sarge4                 FAI                          1.9.1sarge4                    mindi-kernel                 2.4.27-2sarge3                 kernel-image-speakup-i386    2.4.27-1.1sarge3               systemimager                 3.2.3-6sarge3

The remote host is running Kerio MailServer version 6.0.10 or lower.  There is a flaw in the remote version of this server that would allow an attacker to cause the application to fail.  While the details of the flaw are unknown, it is alledged that an attacker can launch the attack without any credentials and render the target service unavailable.

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2006-0437.

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2006-0617.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
67401	Oracle Linux 4：カーネル（ELSA-2006-0617 / ELSA-2006-0689）	Nessus	Oracle Linux Local Security Checks	2013/7/12	2021/1/14	high
27877	Ubuntu 5.04 / 5.10 / 6.06 LTS : linux-source-2.6.10/2.6.12/2.6.15 vulnerabilities (USN-302-1)	Nessus	Ubuntu Local Security Checks	2007/11/10	2021/1/19	high
67401	Oracle Linux 4：kernel (ELSA-2006-0617 / ELSA-2006-0689)	Nessus	Oracle Linux Local Security Checks	2013/7/12	2021/1/14	high
67401	Oracle Linux 4：kernel (ELSA-2006-0617 / ELSA-2006-0689)	Nessus	Oracle Linux Local Security Checks	2013/7/12	2021/1/14	high
21598	Mandrake Linux Security Advisory : kernel (MDKSA-2006:087)	Nessus	Mandriva Local Security Checks	2006/5/27	2021/1/6	high
22726	Debian DSA-1184-2 : kernel-source-2.6.8 - several vulnerabilities	Nessus	Debian Local Security Checks	2006/10/14	2021/1/4	high
22135	CentOS 3 : kernel (CESA-2006:0437)	Nessus	CentOS Local Security Checks	2006/8/4	2021/1/4	high
22279	CentOS 4 : kernel (CESA-2006:0617)	Nessus	CentOS Local Security Checks	2006/8/30	2021/1/4	high
22086	RHEL 3 : kernel (RHSA-2006:0437)	Nessus	Red Hat Local Security Checks	2006/7/21	2021/1/14	high
67401	Oracle Linux 4 : kernel (ELSA-2006-0617 / ELSA-2006-0689)	Nessus	Oracle Linux Local Security Checks	2013/7/12	2021/1/14	high
22264	RHEL 4 : kernel (RHSA-2006:0617)	Nessus	Red Hat Local Security Checks	2006/8/23	2021/1/14	high
22725	Debian DSA-1183-1 : kernel-source-2.4.27 - several vulnerabilities	Nessus	Debian Local Security Checks	2006/10/14	2021/1/4	high
3469	Kerio MailServer < 6.1.3 Patch 1 Remote DoS	Nessus Network Monitor	SMTP Servers	2006/3/9	2019/3/6	medium
801417	CentOS RHSA-2006-0437 Security Check	Log Correlation Engine	Generic			high
801421	CentOS RHSA-2006-0617 Security Check	Log Correlation Engine	Generic			high

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