CVE-2026-23204 | Teknoloji dünyasından en güncel haberleri ve güvenlikle ilgili gelişmeleri takip edin.

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 v…
High CVSS: 7.1

CVE-2026-23204

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
Vendor
Linux
Product
Linux Kernel
CWE
CWE-125
Yayın Tarihi
2026-02-14 17:15:58
Güncelleme
2026-04-03 14:16:27
Source Identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
KEV Date Added
-

Kategoriler

CWE-125 Linux Kernel HIGH Linux 2026

Referanslar

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/cfa745830e45ecb75c061aa34330ee0cac941cc7 https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5