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Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package perf  (opens in a new tab)

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EPSS
0.12% (3rd percentile)

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  • Snyk IDSNYK-ALMALINUX10-PERF-16081732
  • published16 Apr 2026
  • disclosed30 Mar 2026
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Introduced: 30 Mar 2026

CVE-2026-23204  (opens in a new tab)
CWE-125  (opens in a new tab)

Amendment

The AlmaLinux security team deemed this advisory irrelevant for AlmaLinux:10.

NVD Description

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

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

net/sched: cls_u32: use skb_header_pointer_careful()

skb_header_pointer() does not fully validate negative @offset values.

Use skb_header_pointer_careful() instead.

GangMin Kim provided a report and a repro fooling u32_classify():

BUG: KASAN: slab-out-of-bounds in u32_classify+0x1180/0x11b0 net/sched/cls_u32.c:221

References