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Incomplete Cleanup Affecting kernel-uek-doc package, versions <0:3.8.13-118.46.1.el6uek

Severity

 Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.24% (62nd percentile)

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  • Snyk IDSNYK-ORACLE6-KERNELUEKDOC-2575125
  • published10 Apr 2022
  • disclosed30 Oct 2018
Report a new vulnerability Found a mistake?

Introduced: 30 Oct 2018

CVE-2018-18281  (opens in a new tab)
CWE-459  (opens in a new tab)

How to fix?

Upgrade Oracle:6 kernel-uek-doc to version 0:3.8.13-118.46.1.el6uek or higher.
This issue was patched in ELSA-2020-5706.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-doc package and not the kernel-uek-doc package as distributed by Oracle. See How to fix? for Oracle:6 relevant fixed versions and status.

Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19.

References