CVE-2026-23204
Full vulnerability record from the local CVENow database.
Description
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
Severity
HIGH
CVSS score
7.1
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-02-14 17:15:58.297000
Last modified
2026-10-19 19:17:41.703000
View original CVE JSON
{
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-02-14T17:15:58.297",
"lastModified": "2026-10-19T19:17:41.703",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: cls_u32: use skb_header_pointer_careful()\n\nskb_header_pointer() does not fully validate negative @offset values.\n\nUse skb_header_pointer_careful() instead.\n\nGangMin Kim provided a report and a repro fooling u32_classify():\n\nBUG: KASAN: slab-out-of-bounds in u32_classify+0x1180/0x11b0\nnet/sched/cls_u32.c:221"
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