Fiche vulnérabilité
CVE-2026-23204 : faille élevée linux linux kernel (CVSS 7.1)
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
En bref
- Sévérité
- Élevée (CVSS 7.1)
- Vecteur CVSS
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Exploitation active
- Non signalée par la CISA
- Publication
- 14 févr. 2026
- Dernière mise à jour
- 14 juil. 2026
Produits concernés
- linux linux kernel
Références
- Fiche CVE-2026-23204 sur le NVD (NIST)
- git.kernel.org/stable/c/13336a6239b9d7c6e61483017bb8bdfe3ceb1…
- git.kernel.org/stable/c/29681ed51e737be14d18ecd1c304c57002e4b…
- git.kernel.org/stable/c/66e4b63d61c15de6ca5332d9ca6db59a404d7…
- git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7…
- git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bba…
- git.kernel.org/stable/c/cfa745830e45ecb75c061aa34330ee0cac941…
- git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae…
- cert-portal.siemens.com/productcert/html/ssa-019113.html
- cert-portal.siemens.com/productcert/html/ssa-082556.html