{"id":"CVE-2026-90069","summary":"crypto: acomp - allocate async request context when cloning","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: acomp - allocate async request context when cloning\n\nACOMP_REQUEST_ON_STACK() reserves only enough storage for the\nsynchronous fallback. When an async implementation is selected, callers\nclone that stack request before retrying, but acomp_request_clone()\ncurrently copies only the stack-sized object. The clone therefore has no\nstorage for the async provider request context, and providers such as QAT\nwrite past the allocation through acomp_request_ctx(). KASAN does report\na slab OOB write.\n\nAllocate a zeroed clone large enough for the runtime acomp request size,\ncopy only the bytes present in the source object, and preserve the\nexisting fallback-on-allocation-failure behavior. Use the runtime reqsize\nbecause an implementation may adjust it during tfm initialization.","modified":"2026-09-19T03:47:23.837572865Z","published":"2026-09-17T16:05:50.894Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90069.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/889fa17a0af09ff93a9166abc82ee7a654faa49b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d48197cbd5d3476c7deea644972e9ec510865ec2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ee440d4fc0d2f15894ab1f64c474a3adbc858880"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90069.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90069"},{"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":"097c432caaa6d91f87732fe991cb08139e31101a"},{"fixed":"d48197cbd5d3476c7deea644972e9ec510865ec2"},{"fixed":"889fa17a0af09ff93a9166abc82ee7a654faa49b"},{"fixed":"ee440d4fc0d2f15894ab1f64c474a3adbc858880"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90069.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.16.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90069.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}