{"id":"CVE-2026-80836","summary":"crypto: virtio - bound the akcipher result length","details":"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.","modified":"2026-11-01T02:30:55.538591713Z","published":"2026-09-04T15:54:44.981Z","related":["SUSE-SU-2026:24179-1","SUSE-SU-2026:24181-1","SUSE-SU-2026:24182-1","SUSE-SU-2026:24184-1","SUSE-SU-2026:24197-1","SUSE-SU-2026:24235-1","SUSE-SU-2026:24315-1","SUSE-SU-2026:24316-1","SUSE-SU-2026:4640-1","SUSE-SU-2026:4706-1","openSUSE-SU-2026:11773-1","openSUSE-SU-2026:22091-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80836.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/12c4f29e97f31b013f77ad65ba7daeb02aaa6abe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1f9f877b1ef1fbd4ee95571cddf39c8002cee252"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3fda114a42f1510a4ec8a0b17a0cfc997952ccc2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5545de5050cbc3594506d74f2c392b0716cf8bca"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bd33cb19bcb432a4dd5e8f50be5e2547af1e9f78"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e0ffee8adc71a0bc548e5ebc6e021c013a874d79"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f77a956f6a19f9463ef1527c9d0cda50dded6b92"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80836.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80836"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a36bd0ad9fbf69d0d711b1c105954ce8d6cc144a"},{"fixed":"e0ffee8adc71a0bc548e5ebc6e021c013a874d79"},{"fixed":"bd33cb19bcb432a4dd5e8f50be5e2547af1e9f78"},{"fixed":"12c4f29e97f31b013f77ad65ba7daeb02aaa6abe"},{"fixed":"5545de5050cbc3594506d74f2c392b0716cf8bca"},{"fixed":"3fda114a42f1510a4ec8a0b17a0cfc997952ccc2"},{"fixed":"1f9f877b1ef1fbd4ee95571cddf39c8002cee252"},{"fixed":"f77a956f6a19f9463ef1527c9d0cda50dded6b92"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80836.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.0"},{"fixed":"6.1.191"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.111"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.49"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.13"}]},{"type":"ECOSYSTEM","events":[{"introduced":"7.2.0"},{"fixed":"7.2.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80836.json"}}],"schema_version":"1.9.2"}