{"api_version":"1","generated_at":"2026-09-09T06:55:19+00:00","cve":"CVE-2026-80836","urls":{"html":"https://cve.report/CVE-2026-80836","api":"https://cve.report/api/cve/CVE-2026-80836.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80836","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80836"},"summary":{"title":"crypto: virtio - bound the akcipher result length","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-04 16:18:11","updated_at":"2026-09-04 16:18:11"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/5545de5050cbc3594506d74f2c392b0716cf8bca","name":"https://git.kernel.org/stable/c/5545de5050cbc3594506d74f2c392b0716cf8bca","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f77a956f6a19f9463ef1527c9d0cda50dded6b92","name":"https://git.kernel.org/stable/c/f77a956f6a19f9463ef1527c9d0cda50dded6b92","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1f9f877b1ef1fbd4ee95571cddf39c8002cee252","name":"https://git.kernel.org/stable/c/1f9f877b1ef1fbd4ee95571cddf39c8002cee252","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3fda114a42f1510a4ec8a0b17a0cfc997952ccc2","name":"https://git.kernel.org/stable/c/3fda114a42f1510a4ec8a0b17a0cfc997952ccc2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80836","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80836","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a 5545de5050cbc3594506d74f2c392b0716cf8bca git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a 3fda114a42f1510a4ec8a0b17a0cfc997952ccc2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a 1f9f877b1ef1fbd4ee95571cddf39c8002cee252 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a f77a956f6a19f9463ef1527c9d0cda50dded6b92 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.49 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.13 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.3 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"80836","cve":"CVE-2026-80836","epss":"0.001680000","percentile":"0.063410000","score_date":"2026-09-07","updated_at":"2026-09-08 00:05:27"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"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":"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":"6.18.*","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-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.49","versionStartIncluding":"5.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.13","versionStartIncluding":"5.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.3","versionStartIncluding":"5.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"5.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-09-04T15:54:44.981Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80836","datePublished":"2026-09-04T15:54:44.981Z","dateReserved":"2026-08-26T14:34:25.796Z","dateUpdated":"2026-09-04T15:54:44.981Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-04 16:18:11","lastModifiedDate":"2026-09-04 16:18:11","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80836","Ordinal":"1","Title":"crypto: virtio - bound the akcipher result length","CVE":"CVE-2026-80836","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80836","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"crypto: virtio - bound the akcipher result length"}]}}}