Use After Free Affecting kpatch-patch-4_18_0-425_13_1 package, versions <0:1-2.el8_7


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.23% (14th percentile)

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  • Snyk IDSNYK-RHEL8-KPATCHPATCH4180425131-5415131
  • published6 Apr 2023
  • disclosed7 Mar 2023

Introduced: 7 Mar 2023

CVE-2023-1476  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kpatch-patch-4_18_0-425_13_1 to version 0:1-2.el8_7 or higher.
This issue was patched in RHSA-2023:1659.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kpatch-patch-4_18_0-425_13_1 package and not the kpatch-patch-4_18_0-425_13_1 package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.

CVSS Base Scores

version 3.1