{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64216", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.770Z", "datePublished": "2026-07-24T15:23:04.673Z", "dateUpdated": "2026-07-24T15:23:04.673Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-24T15:23:04.673Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix potential UAF in netfs_unlock_abandoned_read_pages()\n\nnetfs_unlock_abandoned_read_pages(rreq) accesses the index of the folios it\nis wanting to unlock and compares that to rreq->no_unlock_folio so that it\ndoesn't unlock a folio being read for netfs_perform_write() or\nnetfs_write_begin().\n\nHowever, given that netfs_unlock_abandoned_read_pages() is called _after_\nNETFS_RREQ_IN_PROGRESS is cleared, the one folio that it's not allowed to\ndereference is the one specified by ->no_unlock_folio as ownership\nimmediately reverts to the caller.\n\nFix this by storing the folio pointer instead and using that rather than\nthe index. Also fix netfs_unlock_read_folio() where the same applies."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/netfs/buffered_read.c", "fs/netfs/read_collect.c", "fs/netfs/read_retry.c", "include/linux/netfs.h"], "versions": [{"version": "ee4cdf7ba857a894ad1650d6ab77669cbbfa329e", "lessThan": "6080fa3ecfbb4448a3b47368629534c09b6ec750", "status": "affected", "versionType": "git"}, {"version": "ee4cdf7ba857a894ad1650d6ab77669cbbfa329e", "lessThan": "3866d015f33aeedf81338dd99154703bef33faef", "status": "affected", "versionType": "git"}, {"version": "ee4cdf7ba857a894ad1650d6ab77669cbbfa329e", "lessThan": "dbe556972100fabb8e5a1b3d2163831ff07b1e8e", "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/netfs/buffered_read.c", "fs/netfs/read_collect.c", "fs/netfs/read_retry.c", "include/linux/netfs.h"], "versions": [{"version": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.34", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.11", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "6.12", "versionEndExcluding": "6.18.34"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.0.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6080fa3ecfbb4448a3b47368629534c09b6ec750"}, {"url": "https://git.kernel.org/stable/c/3866d015f33aeedf81338dd99154703bef33faef"}, {"url": "https://git.kernel.org/stable/c/dbe556972100fabb8e5a1b3d2163831ff07b1e8e"}], "title": "netfs: Fix potential UAF in netfs_unlock_abandoned_read_pages()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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