CVE-2026-23204

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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

7.1 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/13336a6239b9d7c6e61483017bb8bdfe3ceb10a5 Patch
https://git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7943 Patch
https://git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bbaed8 Patch
https://git.kernel.org/stable/c/cfa745830e45ecb75c061aa34330ee0cac941cc7
https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.35:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.35:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.35:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.35:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.35:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.35:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*
History

25 Mar 2026, 11:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/cfa745830e45ecb75c061aa34330ee0cac941cc7 -

19 Mar 2026, 16:34

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/13336a6239b9d7c6e61483017bb8bdfe3ceb10a5 - () https://git.kernel.org/stable/c/13336a6239b9d7c6e61483017bb8bdfe3ceb10a5 - Patch
References () https://git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7943 - () https://git.kernel.org/stable/c/8a672f177ebe19c93d795fbe967846084fbc7943 - Patch
References () https://git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bbaed8 - () https://git.kernel.org/stable/c/cabd1a976375780dabab888784e356f574bbaed8 - Patch
References () https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5 - () https://git.kernel.org/stable/c/e41a23e61259f5526af875c3b86b3d42a9bae0e5 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.1
CWE CWE-125
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.35:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.35:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.35:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.35:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.35:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.35:rc6:*:*:*:*:*:*

18 Feb 2026, 17:52

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: net/sched: cls_u32: usar skb_header_pointer_careful() skb_header_pointer() no valida completamente los valores negativos de @offset. Usar skb_header_pointer_careful() en su lugar. GangMin Kim proporcionó un informe y una reproducción engañando a u32_classify(): BUG: KASAN: slab-out-of-bounds en u32_classify+0x1180/0x11b0 net/sched/cls_u32.c:221

14 Feb 2026, 17:15

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-14 17:15

Updated : 2026-03-25 11:16

NVD link : CVE-2026-23204

Mitre link : CVE-2026-23204

CVE.ORG link : CVE-2026-23204

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-125

Out-of-bounds Read