{"id":"CVE-2026-53050","revision":null,"records":[{"revision":"c74a6b5f05e8468994c15167db756f35","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53050","aliases":[],"title":"quota: Fix race of dquot_scan_active() with quota deactivation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nquota: Fix race of dquot_scan_active() with quota deactivation\n\ndquot_scan_active() can race with quota deactivation in\nquota_release_workfn() like:\n\n CPU0 (quota_release_workfn) CPU1 (dquot_scan_active)\n ============================== ==============================\n spin_lock(&dq_list_lock);\n list_replace_init(\n &releasing_dquots, &rls_head);\n /* dquot X on rls_head,\n dq_count == 0,\n DQ_ACTIVE_B still set */\n spin_unlock(&dq_list_lock);\n synchronize_srcu(&dquot_srcu);\n spin_lock(&dq_list_lock);\n list_for_each_entry(dquot,\n &inuse_list, dq_inuse) {\n /* finds dquot X */\n dquot_active(X) -> true\n atomic_inc(&X->dq_count);\n }\n spin_unlock(&dq_list_lock);\n spin_lock(&dq_list_lock);\n dquot = list_first_entry(&rls_head);\n WARN_ON_ONCE(atomic_read(&dquot->dq_count));\n\nThe problem is not only a cosmetic one as under memory pressure the\ncaller of dquot_scan_active() can end up working on freed dquot.\n\nFix the problem by making sure the dquot is removed from releasing list\nwhen we acquire a reference to it.","state":0,"publishedAt":"2026-06-24T16:29:56.043+00:00","modifiedAt":"2026-10-15T01:22:19.854+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/quota/dquot.c\",\n \"include/linux/quotaops.h\"\n ],\n \"versions\": [\n {\n \"version\": \"22c06bf1f99ec3ec16b1a81342becba4c59a1f16\",\n \"lessThan\": \"2bdc80f4619411e5bd4a3ef23f51e14021ed457c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"56e96b38d2f7cd95b3c30eb70decac7233915e0a\",\n \"lessThan\": \"f9438cb8c8ec3adc84b2b450a3aab0123d074c3b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"12a820a9923c11e8e898da9f82c8aded70cdcd16\",\n \"lessThan\": \"ac8a2e0d287ebf35e5d7e51e260b4e146648ba4a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"869b6ea1609f655a43251bf41757aa44e5350a8f\",\n \"lessThan\": \"6678dde265708003c2b42551af4a2e3cb05decd5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"869b6ea1609f655a43251bf41757aa44e5350a8f\",\n \"lessThan\": \"61e25f664dc2a08299e07d84c85776abc2350f75\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"869b6ea1609f655a43251bf41757aa44e5350a8f\",\n \"lessThan\": \"fdd424d7c35633ac577fd87d1b043d1b8a6cd350\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"869b6ea1609f655a43251bf41757aa44e5350a8f\",\n \"lessThan\": \"82cbdb4c1ebb5ea7d7bd45c18d3483b5bd32ebc1\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"869b6ea1609f655a43251bf41757aa44e5350a8f\",\n \"lessThan\": \"e93ab401da4b2e2c1b8ef2424de2f238d51c8b2d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bb7e3a019b52d829949d02b64ebab37838148fbf\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"061a18239ced5eb086967a2b4451cb1cc5ce0702\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2a1ddddba6541143c8f73962f3021f1789114284\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"5.10.199\",\n \"lessThan\": \"5.10.258\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.136\",\n \"lessThan\": \"5.15.209\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.59\",\n \"lessThan\": \"6.1.175\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.297\",\n \"lessThan\": \"4.20\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.259\",\n \"lessThan\": \"5.5\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.5.8\",\n \"lessThan\": \"6.6\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/quota/dquot.c\",\n \"include/linux/quotaops.h\"\n ],\n \"versions\": [\n {\n \"version\": \"6.6\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"6.6\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.258\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.209\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.175\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.141\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.91\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.33\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.10\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/2bdc80f4619411e5bd4a3ef23f51e14021ed457c","https://git.kernel.org/stable/c/f9438cb8c8ec3adc84b2b450a3aab0123d074c3b","https://git.kernel.org/stable/c/ac8a2e0d287ebf35e5d7e51e260b4e146648ba4a","https://git.kernel.org/stable/c/6678dde265708003c2b42551af4a2e3cb05decd5","https://git.kernel.org/stable/c/61e25f664dc2a08299e07d84c85776abc2350f75","https://git.kernel.org/stable/c/fdd424d7c35633ac577fd87d1b043d1b8a6cd350","https://git.kernel.org/stable/c/82cbdb4c1ebb5ea7d7bd45c18d3483b5bd32ebc1","https://git.kernel.org/stable/c/e93ab401da4b2e2c1b8ef2424de2f238d51c8b2d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53050","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53050","identifiers":["CVE-2026-53050"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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