Out-of-Bounds Affecting kernel-rt-debug-core package, versions <0:4.18.0-553.8.1.rt7.349.el8_10


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELRTDEBUGCORE-7455410
  • published16 Jul 2024
  • disclosed23 Feb 2024

Introduced: 23 Feb 2024

CVE-2023-52464  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-rt-debug-core to version 0:4.18.0-553.8.1.rt7.349.el8_10 or higher.
This issue was patched in RLSA-2024:4352.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-core package and not the kernel-rt-debug-core package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

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

EDAC/thunderx: Fix possible out-of-bounds string access

Enabling -Wstringop-overflow globally exposes a warning for a common bug in the usage of strncat():

drivers/edac/thunderx_edac.c: In function 'thunderx_ocx_com_threaded_isr': drivers/edac/thunderx_edac.c:1136:17: error: 'strncat' specified bound 1024 equals destination size [-Werror=stringop-overflow=] 1136 | strncat(msg, other, OCX_MESSAGE_SIZE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ... 1145 | strncat(msg, other, OCX_MESSAGE_SIZE); ... 1150 | strncat(msg, other, OCX_MESSAGE_SIZE);

...

Apparently the author of this driver expected strncat() to behave the way that strlcat() does, which uses the size of the destination buffer as its third argument rather than the length of the source buffer. The result is that there is no check on the size of the allocated buffer.

Change it to strlcat().

[ bp: Trim compiler output, fixup commit message. ]

CVSS Scores

version 3.1