HIGHCVSS 7.1

CVE-2026-23204

CVE-2026-23204 updated by NVD

Modified: 2026-10-21
Sources: nvd

Summary

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

https://nvd.nist.gov/vuln/detail/CVE-2026-23204

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