CVE-2026-80836crypto: virtio - bound the akcipher result length
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a before bd33cb19bcb432a4dd5e8f50be5e2547af1e9f78; from a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a before 12c4f29e97f31b013f77ad65ba7daeb02aaa6abe; from a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a before 5545de5050cbc3594506d74f2c392b0716cf8bca; from a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a before 3fda114a42f1510a4ec8a0b17a0cfc997952ccc2; from a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a before 1f9f877b1ef1fbd4ee95571cddf39c8002cee252; from a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a before f77a956f6a19f9463ef1527c9d0cda50dded6b92 | CNA record |
References
- https://git.kernel.org/stable/c/bd33cb19bcb432a4dd5e8f50be5e2547af1e9f78
- https://git.kernel.org/stable/c/12c4f29e97f31b013f77ad65ba7daeb02aaa6abe
- https://git.kernel.org/stable/c/5545de5050cbc3594506d74f2c392b0716cf8bca
- https://git.kernel.org/stable/c/3fda114a42f1510a4ec8a0b17a0cfc997952ccc2
- https://git.kernel.org/stable/c/1f9f877b1ef1fbd4ee95571cddf39c8002cee252
- https://git.kernel.org/stable/c/f77a956f6a19f9463ef1527c9d0cda50dded6b92
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.