{"id":"CVE-2026-46093","summary":"mm/vmalloc: take vmap_purge_lock in shrinker","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/vmalloc: take vmap_purge_lock in shrinker\n\ndecay_va_pool_node() can be invoked concurrently from two paths:\n__purge_vmap_area_lazy() when pools are being purged, and the shrinker via\nvmap_node_shrink_scan().\n\nHowever, decay_va_pool_node() is not safe to run concurrently, and the\nshrinker path currently lacks serialization, leading to races and possible\nleaks.\n\nProtect decay_va_pool_node() by taking vmap_purge_lock in the shrinker\npath to ensure serialization with purge users.","modified":"2026-06-27T11:55:19.141471225Z","published":"2026-05-27T12:58:43.458Z","related":["openSUSE-SU-2026:10954-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46093.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/12f2341b4c235d5593a433abac201c1c6725787f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/687ccdf582169cd680aeaf24cc953807c4cd4345"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ec05f51f1e65bce95528543eb73fda56fd201d94"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46093.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46093"},{"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":"7679ba6b36dbb300b757b672d6a32a606499e14b"},{"fixed":"687ccdf582169cd680aeaf24cc953807c4cd4345"},{"fixed":"12f2341b4c235d5593a433abac201c1c6725787f"},{"fixed":"ec05f51f1e65bce95528543eb73fda56fd201d94"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46093.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.9.0"},{"fixed":"6.18.27"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46093.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"}]}