Out-of-bounds Read Affecting kernel-livepatch-6_4_0-150700_7_3-rt package, versions <1-150700.1.3.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.72% (53rd percentile)

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  • Snyk IDSNYK-SLES157-KERNELLIVEPATCH64015070073RT-10380274
  • published18 Jun 2025
  • disclosed17 Jun 2025

Introduced: 17 Jun 2025

CVE-2025-37879  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 kernel-livepatch-6_4_0-150700_7_3-rt to version 1-150700.1.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-6_4_0-150700_7_3-rt package and not the kernel-livepatch-6_4_0-150700_7_3-rt package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

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

9p/net: fix improper handling of bogus negative read/write replies

In p9_client_write() and p9_client_read_once(), if the server incorrectly replies with success but a negative write/read count then we would consider written (negative) <= rsize (positive) because both variables were signed.

Make variables unsigned to avoid this problem.

The reproducer linked below now fails with the following error instead of a null pointer deref: 9pnet: bogus RWRITE count (4294967295 > 3)

CVSS Base Scores

version 3.1