GHSA-rf63-9f5h-hhg6HighCVSS 7.1
In the Linux kernel, the following vulnerability has been resolved: net/sched: cls_u32: use...
🔗 CVE IDs covered (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
🔗 References (8)
- https://nvd.nist.gov/vuln/detail/CVE-2026-23204
- https://git.kernel.org/stable/c/13336a6239b9d7c6e61483017bb8bdfe3ceb10a5
- https://git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7943
- https://git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bbaed8
- https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5
- https://git.kernel.org/stable/c/cfa745830e45ecb75c061aa34330ee0cac941cc7
- https://git.kernel.org/stable/c/29681ed51e737be14d18ecd1c304c57002e4b72c
- https://github.com/advisories/GHSA-rf63-9f5h-hhg6