CVE-2026-43341

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-43341
In the Linux kernel, the following vulnerability has been resolved: net/ipv6: ioam6: prevent schema length wraparound in trace fill ioam6_fill_trace_data() stores the schema contribution to the trace length in a u8. With bit 22 enabled and the largest schema payload, sclen becomes 1 + 1020 / 4, wraps from 256 to 0, and bypasses the remaining-space check. __ioam6_fill_trace_data() then positions the write cursor without reserving the schema area but still copies the 4-byte schema header and the full schema payload, overrunning the trace buffer. Keep sclen in an unsigned int so the remaining-space check and the write cursor calculation both see the full schema length.

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/184d2e9db27c0f76226b5cad16fe29510a5d2280 Patch
https://git.kernel.org/stable/c/5e67ba9bb531e1ec6599a82a065dea9040b9ce50 Patch
https://git.kernel.org/stable/c/77695a69baca9b99d95fad09fc78c2318736604f Patch
https://git.kernel.org/stable/c/d1b041080086e91d3733a5438a8c51ad5d3d8e09 Patch
https://git.kernel.org/stable/c/d6e1c9b02d85a4f1f4ba6d68e916d9b610a3ed7d Patch
https://git.kernel.org/stable/c/e96d48b37708d53cbdc47f6f60b0714fc4a5f596 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
History

15 May 2026, 19:45

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/184d2e9db27c0f76226b5cad16fe29510a5d2280 - () https://git.kernel.org/stable/c/184d2e9db27c0f76226b5cad16fe29510a5d2280 - Patch
References () https://git.kernel.org/stable/c/5e67ba9bb531e1ec6599a82a065dea9040b9ce50 - () https://git.kernel.org/stable/c/5e67ba9bb531e1ec6599a82a065dea9040b9ce50 - Patch
References () https://git.kernel.org/stable/c/77695a69baca9b99d95fad09fc78c2318736604f - () https://git.kernel.org/stable/c/77695a69baca9b99d95fad09fc78c2318736604f - Patch
References () https://git.kernel.org/stable/c/d1b041080086e91d3733a5438a8c51ad5d3d8e09 - () https://git.kernel.org/stable/c/d1b041080086e91d3733a5438a8c51ad5d3d8e09 - Patch
References () https://git.kernel.org/stable/c/d6e1c9b02d85a4f1f4ba6d68e916d9b610a3ed7d - () https://git.kernel.org/stable/c/d6e1c9b02d85a4f1f4ba6d68e916d9b610a3ed7d - Patch
References () https://git.kernel.org/stable/c/e96d48b37708d53cbdc47f6f60b0714fc4a5f596 - () https://git.kernel.org/stable/c/e96d48b37708d53cbdc47f6f60b0714fc4a5f596 - Patch
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
CWE NVD-CWE-noinfo
First Time Linux linux Kernel
Linux

11 May 2026, 08:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 9.8

08 May 2026, 14:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-08 14:16

Updated : 2026-05-15 19:45

NVD link : CVE-2026-43341

Mitre link : CVE-2026-43341

CVE.ORG link : CVE-2026-43341

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo