EUVD-2026-71286
GHSA-4c27-p37x-4j2h
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2DescriptionCVE.org
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.
Analysis
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). …
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Same technique Buffer Overflow
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External POC / Exploit Code
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