Improper Handling of Overlap Between Protected Memory Ranges Affecting kernel-tools package, versions <0:5.14.0-284.73.1.el9_2


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELTOOLS-7450575
  • published15 Jul 2024
  • disclosed2 Mar 2024

Introduced: 2 Mar 2024

CVE-2022-48627  (opens in a new tab)
CWE-1260  (opens in a new tab)

How to fix?

Upgrade RHEL:9 kernel-tools to version 0:5.14.0-284.73.1.el9_2 or higher.
This issue was patched in RHSA-2024:4533.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools package and not the kernel-tools package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

vt: fix memory overlapping when deleting chars in the buffer

A memory overlapping copy occurs when deleting a long line. This memory overlapping copy can cause data corruption when scr_memcpyw is optimized to memcpy because memcpy does not ensure its behavior if the destination buffer overlaps with the source buffer. The line buffer is not always broken, because the memcpy utilizes the hardware acceleration, whose result is not deterministic.

Fix this problem by using replacing the scr_memcpyw with scr_memmovew.

CVSS Scores

version 3.1