Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: crypto: virtio - bound the akcipher result length virtio_crypto_dataq_akcipher_callback() sets the result length from the device-reported response length without bounding it to the destination buffer, which was allocated for the original request length. sg_copy_from_buffer() then reads that many bytes from the destination buffer; a backend reporting a larger length over-reads adjacent kernel heap into the caller's scatterlist (an out-of-bounds read). Clamp the reported length to the originally requested destination length. A conforming device reports no more than that, so valid results are unaffected.
References
- https://git.kernel.org/stable/c/1f9f877b1ef1fbd4ee95571cddf39c8002cee252
- https://git.kernel.org/stable/c/3fda114a42f1510a4ec8a0b17a0cfc997952ccc2
- https://git.kernel.org/stable/c/5545de5050cbc3594506d74f2c392b0716cf8bca
- https://git.kernel.org/stable/c/f77a956f6a19f9463ef1527c9d0cda50dded6b92
FAQ
What is CVE-2026-80836?
CVE-2026-80836 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: crypto: virtio - bound the akcipher result length virtio_crypto_dataq_akcipher_callback() sets the result length from the device-r...
How severe is CVE-2026-80836?
CVSS scoring is not yet available for CVE-2026-80836. Check NVD for updates.
Is there a patch for CVE-2026-80836?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.