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Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package kernel-64k-debug-devel-matched  (opens in a new tab)

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EPSS
0.12% (3rd percentile)

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  • Snyk IDSNYK-ALMALINUX10-KERNEL64KDEBUGDEVELMATCHED-16081724
  • 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 kernel-64k-debug-devel-matched package and not the kernel-64k-debug-devel-matched 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