CVE-2017-17053

high

Description

The init_new_context function in arch/x86/include/asm/mmu_context.h in the Linux kernel before 4.12.10 does not correctly handle errors from LDT table allocation when forking a new process, allowing a local attacker to achieve a use-after-free or possibly have unspecified other impact by running a specially crafted program. This vulnerability only affected kernels built with CONFIG_MODIFY_LDT_SYSCALL=y.

References

https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.10

https://github.com/torvalds/linux/commit/ccd5b3235180eef3cfec337df1c8554ab151b5cc

https://access.redhat.com/errata/RHSA-2018:0676

http://www.securityfocus.com/bid/102010

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccd5b3235180eef3cfec337df1c8554ab151b5cc

Details

Source: Mitre, NVD

Published: 2017-11-29

Risk Information

CVSS v2

Base Score: 6.9

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High