{"api_version":"1","generated_at":"2026-05-30T17:58:45+00:00","cve":"CVE-2026-46093","urls":{"html":"https://cve.report/CVE-2026-46093","api":"https://cve.report/api/cve/CVE-2026-46093.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46093","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46093"},"summary":{"title":"mm/vmalloc: take vmap_purge_lock in shrinker","description":"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 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46093","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7679ba6b36dbb300b757b672d6a32a606499e14b 687ccdf582169cd680aeaf24cc953807c4cd4345 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7679ba6b36dbb300b757b672d6a32a606499e14b 12f2341b4c235d5593a433abac201c1c6725787f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7679ba6b36dbb300b757b672d6a32a606499e14b ec05f51f1e65bce95528543eb73fda56fd201d94 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.9","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.9 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.27 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.4 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46093","cve":"CVE-2026-46093","epss":"0.000170000","percentile":"0.043360000","score_date":"2026-05-29","updated_at":"2026-05-30 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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."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-05-30T10:47:26.798Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/687ccdf582169cd680aeaf24cc953807c4cd4345"},{"url":"https://git.kernel.org/stable/c/12f2341b4c235d5593a433abac201c1c6725787f"},{"url":"https://git.kernel.org/stable/c/ec05f51f1e65bce95528543eb73fda56fd201d94"}],"title":"mm/vmalloc: take vmap_purge_lock in shrinker","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46093","datePublished":"2026-05-27T12:58:43.458Z","dateReserved":"2026-05-13T15:03:33.097Z","dateUpdated":"2026-05-30T10:47:26.798Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:30","lastModifiedDate":"2026-05-30 11:17:20","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46093","Ordinal":"1","Title":"mm/vmalloc: take vmap_purge_lock in shrinker","CVE":"CVE-2026-46093","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46093","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"mm/vmalloc: take vmap_purge_lock in shrinker"}]}}}