crypto: virtio - bound the akcipher result length

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-80836
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-04 16:18:11 UTC
Updated2026-09-04 16:18:11 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.001680000 probability, percentile 0.063410000 (date 2026-09-07)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a 5545de5050cbc3594506d74f2c392b0716cf8bca git Not specified
CNA Linux Linux affected a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a 3fda114a42f1510a4ec8a0b17a0cfc997952ccc2 git Not specified
CNA Linux Linux affected a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a 1f9f877b1ef1fbd4ee95571cddf39c8002cee252 git Not specified
CNA Linux Linux affected a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a f77a956f6a19f9463ef1527c9d0cda50dded6b92 git Not specified
CNA Linux Linux affected 5.19 Not specified
CNA Linux Linux unaffected 5.19 semver Not specified
CNA Linux Linux unaffected 6.18.49 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.13 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2.3 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/5545de5050cbc3594506d74f2c392b0716cf8bca 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f77a956f6a19f9463ef1527c9d0cda50dded6b92 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1f9f877b1ef1fbd4ee95571cddf39c8002cee252 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3fda114a42f1510a4ec8a0b17a0cfc997952ccc2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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