{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64266", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.775Z", "datePublished": "2026-07-25T08:49:15.142Z", "dateUpdated": "2026-07-25T08:49:15.142Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-25T08:49:15.142Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: re-lock request before returning from fuse_ref_folio()\n\nfuse_ref_folio() unlocks the request but does not re-lock it before\nreturning. fuse_chan_abort() can end the request and the async end\ncallback (eg fuse_writepage_free()) can free the args while the\nsubsequent copy chain logic after fuse_ref_folio() accesses them,\nleading to use-after-free issues.\n\nFix this by locking the request in fuse_ref_folio() before returning."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/fuse/dev.c"], "versions": [{"version": "c3021629a0d820247ee12b6c5192a1d5380e21c6", "lessThan": "1f9156714592356b4fda57beac7eab9c2a462dd3", "status": "affected", "versionType": "git"}, {"version": "c3021629a0d820247ee12b6c5192a1d5380e21c6", "lessThan": "5630da218a45ba80f0aba0846cbe8aa655da122b", "status": "affected", "versionType": "git"}, {"version": "c3021629a0d820247ee12b6c5192a1d5380e21c6", "lessThan": "1ca605cfa59377f0143fb35b5b01360f37d1b7c4", "status": "affected", "versionType": "git"}, {"version": "c3021629a0d820247ee12b6c5192a1d5380e21c6", "lessThan": "0e4a5a000123d81234e27a2f8187688cf608f755", "status": "affected", "versionType": "git"}, {"version": "c3021629a0d820247ee12b6c5192a1d5380e21c6", "lessThan": "e6aa539720c3d8def69683ed0c07cf9faea4e8be", "status": "affected", "versionType": "git"}, {"version": "c3021629a0d820247ee12b6c5192a1d5380e21c6", "lessThan": "be353caffa8640f5e25fb3714ce8b0cef5e410e5", "status": "affected", "versionType": "git"}, {"version": "c3021629a0d820247ee12b6c5192a1d5380e21c6", "lessThan": "65a1c2551f7e16085acbb54aedde1feaa559ba7a", "status": "affected", "versionType": "git"}, {"version": "c3021629a0d820247ee12b6c5192a1d5380e21c6", "lessThan": "b5befa80fdbe287a98480effed9564712924add5", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/fuse/dev.c"], "versions": [{"version": "2.6.35", "status": "affected"}, {"version": "0", "lessThan": "2.6.35", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.12.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/1f9156714592356b4fda57beac7eab9c2a462dd3"}, {"url": "https://git.kernel.org/stable/c/5630da218a45ba80f0aba0846cbe8aa655da122b"}, {"url": "https://git.kernel.org/stable/c/1ca605cfa59377f0143fb35b5b01360f37d1b7c4"}, {"url": "https://git.kernel.org/stable/c/0e4a5a000123d81234e27a2f8187688cf608f755"}, {"url": "https://git.kernel.org/stable/c/e6aa539720c3d8def69683ed0c07cf9faea4e8be"}, {"url": "https://git.kernel.org/stable/c/be353caffa8640f5e25fb3714ce8b0cef5e410e5"}, {"url": "https://git.kernel.org/stable/c/65a1c2551f7e16085acbb54aedde1feaa559ba7a"}, {"url": "https://git.kernel.org/stable/c/b5befa80fdbe287a98480effed9564712924add5"}], "title": "fuse: re-lock request before returning from fuse_ref_folio()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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