Out-of-bounds read in Linux kernel - CVE-2026-80814
Published: September 5, 2026
Vulnerability identifier: #VU147110
CSH Severity: Low
CVSS v4: 2.4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80814
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an attacker with physical access to read out-of-bounds data.
The vulnerability exists due to an integer overflow in the rndis_rx_fixup() function when processing a crafted RNDIS message received over USB. An attacker with physical access can supply a crafted RNDIS message with overflowing data offset and length values to read out-of-bounds data.
Affected software
Linux kernel
How to mitigate CVE-2026-80814
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/10a6b99079697c5027b25352e882bdf54fef702a
- https://git.kernel.org/stable/c/2140db1232af04b92faa6c4a2a40df6371ea89ff
- https://git.kernel.org/stable/c/2ded89ca77fae1da6886fe94831acfe4d6aa80b1
- https://git.kernel.org/stable/c/8ca3bd404d076495ed0b274b65971c57b6fd5ac0
- https://git.kernel.org/stable/c/965a251f23ff69cfb4486974d4532e9bb551c7fc
- https://git.kernel.org/stable/c/be7dc3650f799a253df4edd4fe230fc9ea4be063
- https://git.kernel.org/stable/c/c5398ce6db7647b7004d73a3102ccc25fb4bb596
- https://git.kernel.org/stable/c/e971d956353d382ee2185d71c47b538501a43f76
- https://git.kernel.org/stable/c/f8e6fde5db87f855e99b200e392467274f0eb9d7