CVE-2026-23204

HIGH EPSS 1.9%
Published Feb 14, 20264mo ago · Modified Jun 17, 20261w ago
7.1 CVSS 3.1
High
Find Similar
Published Feb 14, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

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

CVSS Details

Base Score
7.1
Exploitability
1.8
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
1.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 17

VendorProductVersionRange
linuxlinux_kernel*≥2.6.35.1  –  <6.6.124
linuxlinux_kernel*≥6.7  –  <6.12.70
linuxlinux_kernel*≥6.13  –  <6.18.10
linuxlinux_kernel2.6.35any
linuxlinux_kernel2.6.35any
linuxlinux_kernel2.6.35any
linuxlinux_kernel2.6.35any
linuxlinux_kernel2.6.35any
linuxlinux_kernel2.6.35any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any

References 6

  • git.kernel.org https://git.kernel.org/stable/c/13336a6239b9d7c6e61483017bb8bdfe3ceb10a5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/29681ed51e737be14d18ecd1c304c57002e4b72c
  • git.kernel.org https://git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7943
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bbaed8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cfa745830e45ecb75c061aa34330ee0cac941cc7
  • git.kernel.org https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/13336a6239b9d7c6e61483017bb8bdfe3ceb10a5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7943
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bbaed8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5
    Patch