{"api_version":"1","generated_at":"2026-07-23T13:44:26+00:00","cve":"CVE-2026-53388","urls":{"html":"https://cve.report/CVE-2026-53388","api":"https://cve.report/api/cve/CVE-2026-53388.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53388","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53388"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 12:16:49","updated_at":"2026-07-20 15:16:41"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"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"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"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"}}],"references":[{"url":"https://git.kernel.org/stable/c/5927b43a4f8d89e86930f524bf63e9c7e66f61b4","name":"https://git.kernel.org/stable/c/5927b43a4f8d89e86930f524bf63e9c7e66f61b4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0223f452532d9cd8a5e87c45de828fd93c99bd25","name":"https://git.kernel.org/stable/c/0223f452532d9cd8a5e87c45de828fd93c99bd25","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/46473ddccdc5065033e397d6e62c280dbcd3d9c2","name":"https://git.kernel.org/stable/c/46473ddccdc5065033e397d6e62c280dbcd3d9c2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/030fe3e9d8abdee303dd7e9e42f45082d382a407","name":"https://git.kernel.org/stable/c/030fe3e9d8abdee303dd7e9e42f45082d382a407","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e28db6ac4792d065ab32565fd9f0a2361c3d4666","name":"https://git.kernel.org/stable/c/e28db6ac4792d065ab32565fd9f0a2361c3d4666","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/af2892249d982a1c036ca456cc135374e68b6677","name":"https://git.kernel.org/stable/c/af2892249d982a1c036ca456cc135374e68b6677","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a078484921052d0badd827fcc2770b5cfc1d4120","name":"https://git.kernel.org/stable/c/a078484921052d0badd827fcc2770b5cfc1d4120","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7c18691e0cfda29672f79bafde8abdb7710674f6","name":"https://git.kernel.org/stable/c/7c18691e0cfda29672f79bafde8abdb7710674f6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53388","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53388","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ce534fb052928ce556639d7ecf01cbf4e01321e1 7c18691e0cfda29672f79bafde8abdb7710674f6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ce534fb052928ce556639d7ecf01cbf4e01321e1 5927b43a4f8d89e86930f524bf63e9c7e66f61b4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ce534fb052928ce556639d7ecf01cbf4e01321e1 030fe3e9d8abdee303dd7e9e42f45082d382a407 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ce534fb052928ce556639d7ecf01cbf4e01321e1 46473ddccdc5065033e397d6e62c280dbcd3d9c2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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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()."}],"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":"2026-07-20T13:39:51.906Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/7c18691e0cfda29672f79bafde8abdb7710674f6"},{"url":"https://git.kernel.org/stable/c/5927b43a4f8d89e86930f524bf63e9c7e66f61b4"},{"url":"https://git.kernel.org/stable/c/030fe3e9d8abdee303dd7e9e42f45082d382a407"},{"url":"https://git.kernel.org/stable/c/46473ddccdc5065033e397d6e62c280dbcd3d9c2"},{"url":"https://git.kernel.org/stable/c/af2892249d982a1c036ca456cc135374e68b6677"},{"url":"https://git.kernel.org/stable/c/0223f452532d9cd8a5e87c45de828fd93c99bd25"},{"url":"https://git.kernel.org/stable/c/e28db6ac4792d065ab32565fd9f0a2361c3d4666"},{"url":"https://git.kernel.org/stable/c/a078484921052d0badd827fcc2770b5cfc1d4120"}],"title":"fuse: re-lock request before replacing page cache folio","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53388","datePublished":"2026-07-19T11:59:34.456Z","dateReserved":"2026-06-09T07:44:35.402Z","dateUpdated":"2026-07-20T13:39:51.906Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 12:16:49","lastModifiedDate":"2026-07-20 15:16:41","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":"53388","Ordinal":"1","Title":"fuse: re-lock request before replacing page cache folio","CVE":"CVE-2026-53388","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53388","Ordinal":"1","NoteData":"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().","Type":"Description","Title":"fuse: re-lock request before replacing page cache folio"}]}}}