CVE-2026-23204
7.1 HIGHIn the Linux kernel, the following vulnerability has been resolved: net/sched: cls_u32: use skb_header_pointer_careful() skb_header_poi...
Published: 2026-02-14 · Last updated: 2026-06-01
Severity and scoring
- CVSS
- 7.1 HIGH
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- CWE
- CWE-125
Affected products
| Vendor | Product |
|---|---|
| linux | linux_kernel |
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
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-23204
- [Patch]https://git.kernel.org/stable/c/13336a6239b9d7c6e61483017bb8bdfe3ceb10a5
- [Other]https://git.kernel.org/stable/c/29681ed51e737be14d18ecd1c304c57002e4b72c
- [Patch]https://git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7943
- [Patch]https://git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bbaed8
- [Other]https://git.kernel.org/stable/c/cfa745830e45ecb75c061aa34330ee0cac941cc7
- [Patch]https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5
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