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Improper Validation of Specified Index, Position, or Offset in Input The advisory has been revoked - it doesn't affect any version of package kernel-modules-extra-matched  (opens in a new tab)

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  • Snyk IDSNYK-RHEL10-KERNELMODULESEXTRAMATCHED-15292378
  • published17 Feb 2026
  • disclosed14 Feb 2026
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Introduced: 14 Feb 2026

CVE-2026-23204  (opens in a new tab)
CWE-1285  (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 kernel-modules-extra-matched package and not the kernel-modules-extra-matched package as distributed by RHEL.

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