Race Condition Affecting kernel-syms package, versions <4.12.14-197.86.1


Severity

Recommended
0.0
low
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.06% (25th percentile)

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  • Snyk IDSNYK-SLES151-KERNELSYMS-2686180
  • published14 Apr 2022
  • disclosed9 Mar 2021

Introduced: 9 Mar 2021

CVE-2020-29374  (opens in a new tab)
CWE-362  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade SLES:15.1 kernel-syms to version 4.12.14-197.86.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-syms package and not the kernel-syms package as distributed by SLES. See How to fix? for SLES:15.1 relevant fixed versions and status.

An issue was discovered in the Linux kernel before 5.7.3, related to mm/gup.c and mm/huge_memory.c. The get_user_pages (aka gup) implementation, when used for a copy-on-write page, does not properly consider the semantics of read operations and therefore can grant unintended write access, aka CID-17839856fd58.

CVSS Scores

version 3.1