{"id":"CVE-2026-53381","revision":"f61d68e671094e2e93102505c6bab526","records":[{"revision":"f61d68e671094e2e93102505c6bab526","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53381","aliases":[],"title":"virtiofs: fix UAF on submount umount","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtiofs: fix UAF on submount umount\n\niput() called from fuse_release_end() can Oops if the super block has\nalready been destroyed.  Normally this is prevented by waiting for\nnum_waiting to go down to zero before commencing with super block shutdown.\n\nThis only works, however, for the last submount instance, as the wait\ncounter is per connection, not per superblock.\n\nRevert to using synchronous release requests for the auto_submounts case,\nwhich is virtiofs only at this time.","state":0,"publishedAt":"2026-07-19T11:59:30.469+00:00","modifiedAt":"2026-10-19T20:07:45.399+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/fuse/file.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"548e1f2bac1d4df91a6138f26bb4ab00323fd948\",\n                            \"lessThan\": \"607a1d4c42f649e6197567c0448fd9ebb316cd42\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cfd1aa3e2b71f3327cb373c45a897c9028c62b35\",\n                            \"lessThan\": \"1cc0e3a0c6499aaaa2f21a4fcbba388486afb25e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"83b375c6efef69b1066ad2d79601221e7892745a\",\n                            \"lessThan\": \"0b809199ff87c44487e516a725dd4be2185712ce\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bfd17b6138df0122a95989457d8e18ce0b86165e\",\n                            \"lessThan\": \"2181a09ba980f142650fb053666350ead4471cfe\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b26923512dbe57ae4917bafd31396d22a9d1691a\",\n                            \"lessThan\": \"97c4691653d145dcc699eca5d3aba3219a520f1f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"26e5c67deb2e1f42a951f022fdf5b9f7eb747b01\",\n                            \"lessThan\": \"2abfd3ffbd9452f72535d96ff3982b3ab1f8f2f9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"26e5c67deb2e1f42a951f022fdf5b9f7eb747b01\",\n                            \"lessThan\": \"39a2b95e008665c14f84e50ed411d898df7cd11b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"26e5c67deb2e1f42a951f022fdf5b9f7eb747b01\",\n                            \"lessThan\": \"e09412a714bcd49375198427bb4aa005037a9d6f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"26e5c67deb2e1f42a951f022fdf5b9f7eb747b01\",\n                            \"lessThan\": \"06b41351779e9289e8785694ade9042ae85e41ea\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"f19a1390af448d9e193c08e28ea5f727bf3c3049\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.10.246\",\n                            \"lessThan\": \"5.10.260\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.196\",\n                            \"lessThan\": \"5.15.211\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.158\",\n                            \"lessThan\": \"6.1.177\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.115\",\n                            \"lessThan\": \"6.6.144\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.54\",\n                            \"lessThan\": \"6.12.95\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17.4\",\n                            \"lessThan\": \"6.18\",\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/fuse/file.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.260\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.211\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.177\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.144\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.95\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.37\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.14\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.2\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\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/607a1d4c42f649e6197567c0448fd9ebb316cd42","https://git.kernel.org/stable/c/1cc0e3a0c6499aaaa2f21a4fcbba388486afb25e","https://git.kernel.org/stable/c/0b809199ff87c44487e516a725dd4be2185712ce","https://git.kernel.org/stable/c/2181a09ba980f142650fb053666350ead4471cfe","https://git.kernel.org/stable/c/97c4691653d145dcc699eca5d3aba3219a520f1f","https://git.kernel.org/stable/c/2abfd3ffbd9452f72535d96ff3982b3ab1f8f2f9","https://git.kernel.org/stable/c/39a2b95e008665c14f84e50ed411d898df7cd11b","https://git.kernel.org/stable/c/e09412a714bcd49375198427bb4aa005037a9d6f","https://git.kernel.org/stable/c/06b41351779e9289e8785694ade9042ae85e41ea"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53381","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53381","identifiers":["CVE-2026-53381"]},"retained":false,"historicalAffected":[]}],"coverage":[]}