Out-of-bounds Read Affecting perf-debuginfo package, versions <1:6.1.175-219.357.amzn2023


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.3% (22nd percentile)

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  • Snyk IDSNYK-AMZN2023-PERFDEBUGINFO-17417129
  • published23 Jun 2026
  • disclosed6 May 2026

Introduced: 6 May 2026

CVE-2026-43112  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 perf-debuginfo to version 1:6.1.175-219.357.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1882.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf-debuginfo package and not the perf-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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

fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath

When cifs_sanitize_prepath is called with an empty string or a string containing only delimiters (e.g., "/"), the current logic attempts to check *(cursor2 - 1) before cursor2 has advanced. This results in an out-of-bounds read.

This patch adds an early exit check after stripping prepended delimiters. If no path content remains, the function returns NULL.

The bug was identified via manual audit and verified using a standalone test case compiled with AddressSanitizer, which triggered a SEGV on affected inputs.

CVSS Base Scores

version 3.1