{"id":"CVE-2026-53388","revision":null,"records":[{"revision":"b1662de18cba437fae48f3dd4f3b972b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53388","aliases":[],"title":"fuse: re-lock request before replacing page cache folio","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: re-lock request before replacing page cache folio\n\nfuse_try_move_folio() unlocks the request on entry but does not\nre-lock it on the success path. This means fuse_chan_abort() can end the\nrequest and free the fuse_io_args (eg fuse_readpages_end()) while the\nsubsequent copy chain logic after fuse_try_move_folio() accesses the\nfuse_io_args, leading to use-after-free issues.\n\nFix this by calling lock_request() before replace_page_cache_folio().\nThis ensures the request is locked on the success path which will\nprevent the fuse_io_args from being freed while the later copying logic\nruns, and also ensures that the ap->folios[i]->mapping is never null\nsince ap->folios[i] will always point to the newfolio after\nreplace_page_cache_folio().","state":0,"publishedAt":"2026-07-19T11:59:34.456+00:00","modifiedAt":"2026-10-19T20:07:45.789+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/dev.c\"\n ],\n \"versions\": [\n {\n \"version\": \"ce534fb052928ce556639d7ecf01cbf4e01321e1\",\n \"lessThan\": \"7c18691e0cfda29672f79bafde8abdb7710674f6\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ce534fb052928ce556639d7ecf01cbf4e01321e1\",\n \"lessThan\": \"5927b43a4f8d89e86930f524bf63e9c7e66f61b4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ce534fb052928ce556639d7ecf01cbf4e01321e1\",\n \"lessThan\": \"030fe3e9d8abdee303dd7e9e42f45082d382a407\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ce534fb052928ce556639d7ecf01cbf4e01321e1\",\n \"lessThan\": \"46473ddccdc5065033e397d6e62c280dbcd3d9c2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ce534fb052928ce556639d7ecf01cbf4e01321e1\",\n \"lessThan\": \"af2892249d982a1c036ca456cc135374e68b6677\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ce534fb052928ce556639d7ecf01cbf4e01321e1\",\n \"lessThan\": \"0223f452532d9cd8a5e87c45de828fd93c99bd25\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ce534fb052928ce556639d7ecf01cbf4e01321e1\",\n \"lessThan\": \"e28db6ac4792d065ab32565fd9f0a2361c3d4666\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"ce534fb052928ce556639d7ecf01cbf4e01321e1\",\n \"lessThan\": \"a078484921052d0badd827fcc2770b5cfc1d4120\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\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/dev.c\"\n ],\n \"versions\": [\n {\n \"version\": \"2.6.35\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"2.6.35\",\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/7c18691e0cfda29672f79bafde8abdb7710674f6","https://git.kernel.org/stable/c/5927b43a4f8d89e86930f524bf63e9c7e66f61b4","https://git.kernel.org/stable/c/030fe3e9d8abdee303dd7e9e42f45082d382a407","https://git.kernel.org/stable/c/46473ddccdc5065033e397d6e62c280dbcd3d9c2","https://git.kernel.org/stable/c/af2892249d982a1c036ca456cc135374e68b6677","https://git.kernel.org/stable/c/0223f452532d9cd8a5e87c45de828fd93c99bd25","https://git.kernel.org/stable/c/e28db6ac4792d065ab32565fd9f0a2361c3d4666","https://git.kernel.org/stable/c/a078484921052d0badd827fcc2770b5cfc1d4120"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53388","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53388","identifiers":["CVE-2026-53388"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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