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Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package perf  (opens in a new tab)

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0.46% (37th percentile)

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  • Snyk IDSNYK-RHEL10-PERF-16465283
  • published7 May 2026
  • disclosed6 May 2026
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Introduced: 6 May 2026

CVE-2026-43190  (opens in a new tab)
CWE-125  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.

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

netfilter: xt_tcpmss: check remaining length before reading optlen

Quoting reporter: In net/netfilter/xt_tcpmss.c (lines 53-68), the TCP option parser reads op[i+1] directly without validating the remaining option length.

If the last byte of the option field is not EOL/NOP (0/1), the code attempts to index op[i+1]. In the case where i + 1 == optlen, this causes an out-of-bounds read, accessing memory past the optlen boundary (either reading beyond the stack buffer _opt or the following payload).