Answer in brief
CVE-2026-80836 records a Unknown severity vulnerability in crypto: virtio - bound the akcipher result length. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <bd33cb19bcb432a4dd5e8f50be5e2547af1e9f78 || >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <12c4f29e97f31b013f77ad65ba7daeb02aaa6abe || >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <5545de5050cbc3594506d74f2c392b0716cf8bca || >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <3fda114a42f1510a4ec8a0b17a0cfc997952ccc2 || >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <1f9f877b1ef1fbd4ee95571cddf39c8002cee252 || >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <f77a956f6a19f9463ef1527c9d0cda50dded6b92 | bd33cb19bcb432a4dd5e8f50be5e2547af1e9f78, 12c4f29e97f31b013f77ad65ba7daeb02aaa6abe, 5545de5050cbc3594506d74f2c392b0716cf8bca, 3fda114a42f1510a4ec8a0b17a0cfc997952ccc2, 1f9f877b1ef1fbd4ee95571cddf39c8002cee252, f77a956f6a19f9463ef1527c9d0cda50dded6b92 |
| Linux/Linuxgeneric | 5.19 | Not reported |
| Linux/Linuxgeneric | >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <5545de5050cbc3594506d74f2c392b0716cf8bca || >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <3fda114a42f1510a4ec8a0b17a0cfc997952ccc2 || >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <1f9f877b1ef1fbd4ee95571cddf39c8002cee252 || >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <f77a956f6a19f9463ef1527c9d0cda50dded6b92 | 5545de5050cbc3594506d74f2c392b0716cf8bca, 3fda114a42f1510a4ec8a0b17a0cfc997952ccc2, 1f9f877b1ef1fbd4ee95571cddf39c8002cee252, f77a956f6a19f9463ef1527c9d0cda50dded6b92 |
| Linux/Linuxgeneric | >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <12c4f29e97f31b013f77ad65ba7daeb02aaa6abe || >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <5545de5050cbc3594506d74f2c392b0716cf8bca || >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <3fda114a42f1510a4ec8a0b17a0cfc997952ccc2 || >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <1f9f877b1ef1fbd4ee95571cddf39c8002cee252 || >=a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a <f77a956f6a19f9463ef1527c9d0cda50dded6b92 | 12c4f29e97f31b013f77ad65ba7daeb02aaa6abe, 5545de5050cbc3594506d74f2c392b0716cf8bca, 3fda114a42f1510a4ec8a0b17a0cfc997952ccc2, 1f9f877b1ef1fbd4ee95571cddf39c8002cee252, f77a956f6a19f9463ef1527c9d0cda50dded6b92 |
Published upstream
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 4, 2026
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.
Quoted source text, attributed separately from HOL analysis.