Off-by-one Error Affecting kernel-debug-uki-virt package, versions <0:5.14.0-284.71.1.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-KERNELDEBUGUKIVIRT-7394565
  • published26 Jun 2024
  • disclosed30 May 2024

Introduced: 30 May 2024

CVE-2024-36957  (opens in a new tab)
CWE-193  (opens in a new tab)

How to fix?

Upgrade RHEL:9 kernel-debug-uki-virt to version 0:5.14.0-284.71.1.el9_2 or higher.
This issue was patched in RHSA-2024:4108.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-uki-virt package and not the kernel-debug-uki-virt 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:

octeontx2-af: avoid off-by-one read from userspace

We try to access count + 1 byte from userspace with memdup_user(buffer, count + 1). However, the userspace only provides buffer of count bytes and only these count bytes are verified to be okay to access. To ensure the copied buffer is NUL terminated, we use memdup_user_nul instead.

CVSS Scores

version 3.1