CVE-2026-80836

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80836", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.796Z", "datePublished": "2026-09-04T15:54:44.981Z", "dateUpdated": "2026-10-30T12:31:09.682Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:31:09.682Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: virtio - bound the akcipher result length\n\nvirtio_crypto_dataq_akcipher_callback() sets the result length from the\ndevice-reported response length without bounding it to the destination\nbuffer, which was allocated for the original request length.\nsg_copy_from_buffer() then reads that many bytes from the destination\nbuffer; a backend reporting a larger length over-reads adjacent kernel\nheap into the caller's scatterlist (an out-of-bounds read).\n\nClamp the reported length to the originally requested destination length.\nA conforming device reports no more than that, so valid results are\nunaffected."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/crypto/virtio/virtio_crypto_akcipher_algs.c"], "versions": [{"version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "lessThan": "e0ffee8adc71a0bc548e5ebc6e021c013a874d79", "status": "affected", "versionType": "git"}, {"version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "lessThan": "bd33cb19bcb432a4dd5e8f50be5e2547af1e9f78", "status": "affected", "versionType": "git"}, {"version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "lessThan": "12c4f29e97f31b013f77ad65ba7daeb02aaa6abe", "status": "affected", "versionType": "git"}, {"version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "lessThan": "5545de5050cbc3594506d74f2c392b0716cf8bca", "status": "affected", "versionType": "git"}, {"version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "lessThan": "3fda114a42f1510a4ec8a0b17a0cfc997952ccc2", "status": "affected", "versionType": "git"}, {"version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "lessThan": "1f9f877b1ef1fbd4ee95571cddf39c8002cee252", "status": "affected", "versionType": "git"}, {"version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "lessThan": "f77a956f6a19f9463ef1527c9d0cda50dded6b92", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/crypto/virtio/virtio_crypto_akcipher_algs.c"], "versions": [{"version": "5.19", "status": "affected"}, {"version": "0", "lessThan": "5.19", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.49", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.13", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.3", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.18.49"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "7.1.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "7.2.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e0ffee8adc71a0bc548e5ebc6e021c013a874d79"}, {"url": "https://git.kernel.org/stable/c/bd33cb19bcb432a4dd5e8f50be5e2547af1e9f78"}, {"url": "https://git.kernel.org/stable/c/12c4f29e97f31b013f77ad65ba7daeb02aaa6abe"}, {"url": "https://git.kernel.org/stable/c/5545de5050cbc3594506d74f2c392b0716cf8bca"}, {"url": "https://git.kernel.org/stable/c/3fda114a42f1510a4ec8a0b17a0cfc997952ccc2"}, {"url": "https://git.kernel.org/stable/c/1f9f877b1ef1fbd4ee95571cddf39c8002cee252"}, {"url": "https://git.kernel.org/stable/c/f77a956f6a19f9463ef1527c9d0cda50dded6b92"}], "title": "crypto: virtio - bound the akcipher result length", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/crypto/virtio/virtio_crypto_akcipher_algs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "e0ffee8adc71a0bc548e5ebc6e021c013a874d79", "status": "affected", "version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "versionType": "git"}, {"lessThan": "bd33cb19bcb432a4dd5e8f50be5e2547af1e9f78", "status": "affected", "version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "versionType": "git"}, {"lessThan": "12c4f29e97f31b013f77ad65ba7daeb02aaa6abe", "status": "affected", "version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "versionType": "git"}, {"lessThan": "5545de5050cbc3594506d74f2c392b0716cf8bca", "status": "affected", "version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "versionType": "git"}, {"lessThan": "3fda114a42f1510a4ec8a0b17a0cfc997952ccc2", "status": "affected", "version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "versionType": "git"}, {"lessThan": "1f9f877b1ef1fbd4ee95571cddf39c8002cee252", "status": "affected", "version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "versionType": "git"}, {"lessThan": "f77a956f6a19f9463ef1527c9d0cda50dded6b92", "status": "affected", "version": "a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/crypto/virtio/virtio_crypto_akcipher_algs.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.19"}, {"lessThan": "5.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.49", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.13", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: virtio - bound the akcipher result length\n\nvirtio_crypto_dataq_akcipher_callback() sets the result length from the\ndevice-reported response length without bounding it to the destination\nbuffer, which was allocated for the original request length.\nsg_copy_from_buffer() then reads that many bytes from the destination\nbuffer; a backend reporting a larger length over-reads adjacent kernel\nheap into the caller's scatterlist (an out-of-bounds read).\n\nClamp the reported length to the originally requested destination length.\nA conforming device reports no more than that, so valid results are\nunaffected."}], "id": "CVE-2026-80836", "lastModified": "2026-10-30T13:20:11.857", "metrics": {}, "published": "2026-09-04T16:18:11.913", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/12c4f29e97f31b013f77ad65ba7daeb02aaa6abe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1f9f877b1ef1fbd4ee95571cddf39c8002cee252"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3fda114a42f1510a4ec8a0b17a0cfc997952ccc2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5545de5050cbc3594506d74f2c392b0716cf8bca"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bd33cb19bcb432a4dd5e8f50be5e2547af1e9f78"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e0ffee8adc71a0bc548e5ebc6e021c013a874d79"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f77a956f6a19f9463ef1527c9d0cda50dded6b92"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a,5545de5050cbc3594506d74f2c392b0716cf8bca)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a,3fda114a42f1510a4ec8a0b17a0cfc997952ccc2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a,1f9f877b1ef1fbd4ee95571cddf39c8002cee252)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a,f77a956f6a19f9463ef1527c9d0cda50dded6b92)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.49,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.13,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.3,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-04T19:30:04.993523+00:00", "updated": "2026-09-05T00:30:18.205225+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-125", "CWE-200"]}