{"id":"CVE-2022-49426","summary":"iommu/arm-smmu-v3-sva: Fix mm use-after-free","details":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/arm-smmu-v3-sva: Fix mm use-after-free\n\nWe currently call arm64_mm_context_put() without holding a reference to\nthe mm, which can result in use-after-free. Call mmgrab()/mmdrop() to\nensure the mm only gets freed after we unpinned the ASID.","modified":"2026-04-02T08:27:35.221155Z","published":"2025-02-26T02:12:47.206Z","related":["SUSE-SU-2025:1027-1","SUSE-SU-2025:1176-1","SUSE-SU-2025:1183-1","SUSE-SU-2025:1241-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49426.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/9aa215450888cf29af0c479e14a712dc6b0c506c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cbd23144f7662b00bcde32a938c4a4057e476d68"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e3cbbdbff8a4db5d053c53fd71be62ccccdb52b0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc90f13ea0dcd960e5002d204fa55cec4e0db2fa"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49426.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49426"},{"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":"32784a9562fb0518b12e9797ee2aec52214adf6f"},{"fixed":"fc90f13ea0dcd960e5002d204fa55cec4e0db2fa"},{"fixed":"e3cbbdbff8a4db5d053c53fd71be62ccccdb52b0"},{"fixed":"9aa215450888cf29af0c479e14a712dc6b0c506c"},{"fixed":"cbd23144f7662b00bcde32a938c4a4057e476d68"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49426.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}