Out-of-bounds read in Linux kernel - CVE-2026-80836
Published: September 5, 2026
Vulnerability identifier: #VU147089
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80836
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in virtio_crypto_dataq_akcipher_callback() when handling a device-reported akcipher response length. A local user can cause a virtio crypto backend to report an oversized result length to disclose sensitive information.
Affected software
Linux kernel
How to mitigate CVE-2026-80836
Install security update from vendor's repository.