CVE-2026-74572

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74572", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.917Z", "datePublished": "2026-08-15T12:28:11.328Z", "dateUpdated": "2026-10-16T19:05:56.826Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:48:51.651Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: fix deadlock between metadata writeback and transaction commit\n\nWhen writing out metadata extent buffers in a zoned filesystem,\nbtree_writepages() holds fs_info->zoned_meta_io_lock across the whole\nwriteback loop, including the call to btrfs_check_meta_write_pointer() ->\ncheck_bg_is_active().\n\nFor the tree-log block group, check_bg_is_active() may fail to activate\nthe zone and fall back to btrfs_zone_finish_one_bg() to free an active\nzone. That path waits for the running transaction to commit while still\nholding zoned_meta_io_lock, but the committer needs that same lock to\nwrite out the tree extents, so the two tasks deadlock:\n\n Task A (kworker, metadata writeback) Task B (fsstress, transaction commit)\n ------------------------------------ -------------------------------------\n wb_workfn() btrfs_commit_transaction(T)\n btree_writepages() btrfs_write_and_wait_transaction()\n btrfs_zoned_meta_io_lock() btrfs_write_marked_extents()\n btrfs_check_meta_write_pointer() btree_writepages()\n check_bg_is_active() [treelog_bg] btrfs_zoned_meta_io_lock()\n btrfs_zone_finish_one_bg() <blocks on zoned_meta_io_lock,\n btrfs_zone_finish() held by Task A>\n do_zone_finish()\n btrfs_inc_block_group_ro()\n btrfs_wait_for_commit()\n <blocks waiting for commit\n of transaction T, done by\n Task B>\n\nThe sibling branch in check_bg_is_active() already drops zoned_meta_io_lock\naround do_zone_finish() for this exact reason. Do the same in the tree-log\nbranch: release the lock around btrfs_zone_finish_one_bg() and re-acquire\nit afterwards. The lock only protects fs_info->active_{meta,system}_bg,\nwhich this branch does not touch, and ctx->zoned_bg keeps a reference to\nthe block group across the unlock, so nothing is lost while the lock\nis dropped.\n\nThis hang occasionally reproduces with fstests generic/475 on a zoned\nbtrfs filesystem."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - On storage servers exporting a zoned btrfs volume via nfsd or ksmbd, remote client write/fsync I/O reaches btrfs_commit_transaction() and btree_writepages() on the server kernel without any local syscall access.\nAC:L - The attacker controls both deadlock participants by driving concurrent metadata dirtying/writeback and transaction commits (reproduced with fsstress/fstests generic/475); the kworker writeback side is a direct result of attacker-generated btree dirty pages.\nPR:N - Exploitation requires only network write access to an NFS or SMB export of the zoned btrfs filesystem; no local account, capability, or init-namespace privilege is needed when the export permits client writes.\nUI:N - The deadlock is triggered entirely by the attacker's own concurrent write and sync I/O; no victim must mount a filesystem, open a file, or perform any interactive action.\nS:U - The mutex deadlock freezes btrfs metadata I/O within the same host kernel security authority; it does not cross a VM, IOMMU, or sandbox boundary.\nC:N - This is a lock-ordering deadlock with no memory corruption, out-of-bounds access, use-after-free, or information disclosure of any kind.\nI:N - The bug causes tasks to block indefinitely on locks but does not corrupt, modify, or overwrite any data or enable arbitrary writes or code execution.\nA:H - The circular wait between zoned_meta_io_lock and btrfs_wait_for_commit() permanently hangs metadata writeback and transaction commit, freezing all I/O on the affected zoned btrfs filesystem."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/zoned.c"], "versions": [{"version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "lessThan": "18577e77c2c8adaadf1f7c6e9bcd1c0b14e5dcdd", "status": "affected", "versionType": "git"}, {"version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "lessThan": "c3320873e0c04ce7b746fc8fe948f07bbbbdec33", "status": "affected", "versionType": "git"}, {"version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "lessThan": "deddd28fd83c264ee2ff5cd6b34449a9f1be6112", "status": "affected", "versionType": "git"}, {"version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "lessThan": "75859a7cd77cd2ddaddbcb963e3fcd34738953af", "status": "affected", "versionType": "git"}, {"version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "lessThan": "1ebe51c29fa9755d5b2fea28727c051117907cf8", "status": "affected", "versionType": "git"}, {"version": "fca3a1cd3ba47f1815e0c0fcdc9aafaf02ee0a75", "status": "affected", "versionType": "git"}, {"version": "6.5.5", "lessThan": "6.6", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/zoned.c"], "versions": [{"version": "6.6", "status": "affected"}, {"version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.151", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.103", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.44", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.8", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "6.6", "versionEndExcluding": "6.6.151"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.12.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.18.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.1.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5.5"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/18577e77c2c8adaadf1f7c6e9bcd1c0b14e5dcdd"}, {"url": "https://git.kernel.org/stable/c/c3320873e0c04ce7b746fc8fe948f07bbbbdec33"}, {"url": "https://git.kernel.org/stable/c/deddd28fd83c264ee2ff5cd6b34449a9f1be6112"}, {"url": "https://git.kernel.org/stable/c/75859a7cd77cd2ddaddbcb963e3fcd34738953af"}, {"url": "https://git.kernel.org/stable/c/1ebe51c29fa9755d5b2fea28727c051117907cf8"}], "title": "btrfs: zoned: fix deadlock between metadata writeback and transaction commit", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-74572", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T19:00:32.799131Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T19:05:56.826Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-74572", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T19:00:32.799131Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T19:00:33.739Z"}}], "cna": {"title": "btrfs: zoned: fix deadlock between metadata writeback and transaction commit", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.5, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}, "scenarios": [{"lang": "en", "value": "AV:N - On storage servers exporting a zoned btrfs volume via nfsd or ksmbd, remote client write/fsync I/O reaches btrfs_commit_transaction() and btree_writepages() on the server kernel without any local syscall access.\nAC:L - The attacker controls both deadlock participants by driving concurrent metadata dirtying/writeback and transaction commits (reproduced with fsstress/fstests generic/475); the kworker writeback side is a direct result of attacker-generated btree dirty pages.\nPR:N - Exploitation requires only network write access to an NFS or SMB export of the zoned btrfs filesystem; no local account, capability, or init-namespace privilege is needed when the export permits client writes.\nUI:N - The deadlock is triggered entirely by the attacker's own concurrent write and sync I/O; no victim must mount a filesystem, open a file, or perform any interactive action.\nS:U - The mutex deadlock freezes btrfs metadata I/O within the same host kernel security authority; it does not cross a VM, IOMMU, or sandbox boundary.\nC:N - This is a lock-ordering deadlock with no memory corruption, out-of-bounds access, use-after-free, or information disclosure of any kind.\nI:N - The bug causes tasks to block indefinitely on locks but does not corrupt, modify, or overwrite any data or enable arbitrary writes or code execution.\nA:H - The circular wait between zoned_meta_io_lock and btrfs_wait_for_commit() permanently hangs metadata writeback and transaction commit, freezing all I/O on the affected zoned btrfs filesystem."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "lessThan": "18577e77c2c8adaadf1f7c6e9bcd1c0b14e5dcdd", "versionType": "git"}, {"status": "affected", "version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "lessThan": "c3320873e0c04ce7b746fc8fe948f07bbbbdec33", "versionType": "git"}, {"status": "affected", "version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "lessThan": "deddd28fd83c264ee2ff5cd6b34449a9f1be6112", "versionType": "git"}, {"status": "affected", "version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "lessThan": "75859a7cd77cd2ddaddbcb963e3fcd34738953af", "versionType": "git"}, {"status": "affected", "version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "lessThan": "1ebe51c29fa9755d5b2fea28727c051117907cf8", "versionType": "git"}, {"status": "affected", "version": "fca3a1cd3ba47f1815e0c0fcdc9aafaf02ee0a75", "versionType": "git"}, {"status": "affected", "version": "6.5.5", "lessThan": "6.6", "versionType": "semver"}], "programFiles": ["fs/btrfs/zoned.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.6"}, {"status": "unaffected", "version": "0", "lessThan": "6.6", "versionType": "semver"}, {"status": "unaffected", "version": "6.6.151", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.103", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.44", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.8", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/btrfs/zoned.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/18577e77c2c8adaadf1f7c6e9bcd1c0b14e5dcdd"}, {"url": "https://git.kernel.org/stable/c/c3320873e0c04ce7b746fc8fe948f07bbbbdec33"}, {"url": "https://git.kernel.org/stable/c/deddd28fd83c264ee2ff5cd6b34449a9f1be6112"}, {"url": "https://git.kernel.org/stable/c/75859a7cd77cd2ddaddbcb963e3fcd34738953af"}, {"url": "https://git.kernel.org/stable/c/1ebe51c29fa9755d5b2fea28727c051117907cf8"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: fix deadlock between metadata writeback and transaction commit\n\nWhen writing out metadata extent buffers in a zoned filesystem,\nbtree_writepages() holds fs_info->zoned_meta_io_lock across the whole\nwriteback loop, including the call to btrfs_check_meta_write_pointer() ->\ncheck_bg_is_active().\n\nFor the tree-log block group, check_bg_is_active() may fail to activate\nthe zone and fall back to btrfs_zone_finish_one_bg() to free an active\nzone. That path waits for the running transaction to commit while still\nholding zoned_meta_io_lock, but the committer needs that same lock to\nwrite out the tree extents, so the two tasks deadlock:\n\n Task A (kworker, metadata writeback) Task B (fsstress, transaction commit)\n ------------------------------------ -------------------------------------\n wb_workfn() btrfs_commit_transaction(T)\n btree_writepages() btrfs_write_and_wait_transaction()\n btrfs_zoned_meta_io_lock() btrfs_write_marked_extents()\n btrfs_check_meta_write_pointer() btree_writepages()\n check_bg_is_active() [treelog_bg] btrfs_zoned_meta_io_lock()\n btrfs_zone_finish_one_bg() <blocks on zoned_meta_io_lock,\n btrfs_zone_finish() held by Task A>\n do_zone_finish()\n btrfs_inc_block_group_ro()\n btrfs_wait_for_commit()\n <blocks waiting for commit\n of transaction T, done by\n Task B>\n\nThe sibling branch in check_bg_is_active() already drops zoned_meta_io_lock\naround do_zone_finish() for this exact reason. Do the same in the tree-log\nbranch: release the lock around btrfs_zone_finish_one_bg() and re-acquire\nit afterwards. The lock only protects fs_info->active_{meta,system}_bg,\nwhich this branch does not touch, and ctx->zoned_bg keeps a reference to\nthe block group across the unlock, so nothing is lost while the lock\nis dropped.\n\nThis hang occasionally reproduces with fstests generic/475 on a zoned\nbtrfs filesystem."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.151", "versionStartIncluding": "6.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.103", "versionStartIncluding": "6.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.44", "versionStartIncluding": "6.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.8", "versionStartIncluding": "6.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "6.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "6.5.5"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:48:51.651Z"}}}, "cveMetadata": {"cveId": "CVE-2026-74572", "state": "PUBLISHED", "dateUpdated": "2026-10-16T19:05:56.826Z", "dateReserved": "2026-08-15T05:44:03.917Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-15T12:28:11.328Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/btrfs/zoned.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "18577e77c2c8adaadf1f7c6e9bcd1c0b14e5dcdd", "status": "affected", "version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "versionType": "git"}, {"lessThan": "c3320873e0c04ce7b746fc8fe948f07bbbbdec33", "status": "affected", "version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "versionType": "git"}, {"lessThan": "deddd28fd83c264ee2ff5cd6b34449a9f1be6112", "status": "affected", "version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "versionType": "git"}, {"lessThan": "75859a7cd77cd2ddaddbcb963e3fcd34738953af", "status": "affected", "version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "versionType": "git"}, {"lessThan": "1ebe51c29fa9755d5b2fea28727c051117907cf8", "status": "affected", "version": "13bb483d32abb6f8ebd40141d87eb68f11cc2dd2", "versionType": "git"}, {"status": "affected", "version": "fca3a1cd3ba47f1815e0c0fcdc9aafaf02ee0a75", "versionType": "git"}, {"lessThan": "6.6", "status": "affected", "version": "6.5.5", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/btrfs/zoned.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.6"}, {"lessThan": "6.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.151", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.103", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.44", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: zoned: fix deadlock between metadata writeback and transaction commit\n\nWhen writing out metadata extent buffers in a zoned filesystem,\nbtree_writepages() holds fs_info->zoned_meta_io_lock across the whole\nwriteback loop, including the call to btrfs_check_meta_write_pointer() ->\ncheck_bg_is_active().\n\nFor the tree-log block group, check_bg_is_active() may fail to activate\nthe zone and fall back to btrfs_zone_finish_one_bg() to free an active\nzone. That path waits for the running transaction to commit while still\nholding zoned_meta_io_lock, but the committer needs that same lock to\nwrite out the tree extents, so the two tasks deadlock:\n\n Task A (kworker, metadata writeback) Task B (fsstress, transaction commit)\n ------------------------------------ -------------------------------------\n wb_workfn() btrfs_commit_transaction(T)\n btree_writepages() btrfs_write_and_wait_transaction()\n btrfs_zoned_meta_io_lock() btrfs_write_marked_extents()\n btrfs_check_meta_write_pointer() btree_writepages()\n check_bg_is_active() [treelog_bg] btrfs_zoned_meta_io_lock()\n btrfs_zone_finish_one_bg() <blocks on zoned_meta_io_lock,\n btrfs_zone_finish() held by Task A>\n do_zone_finish()\n btrfs_inc_block_group_ro()\n btrfs_wait_for_commit()\n <blocks waiting for commit\n of transaction T, done by\n Task B>\n\nThe sibling branch in check_bg_is_active() already drops zoned_meta_io_lock\naround do_zone_finish() for this exact reason. Do the same in the tree-log\nbranch: release the lock around btrfs_zone_finish_one_bg() and re-acquire\nit afterwards. The lock only protects fs_info->active_{meta,system}_bg,\nwhich this branch does not touch, and ctx->zoned_bg keeps a reference to\nthe block group across the unlock, so nothing is lost while the lock\nis dropped.\n\nThis hang occasionally reproduces with fstests generic/475 on a zoned\nbtrfs filesystem."}], "id": "CVE-2026-74572", "lastModified": "2026-10-16T20:17:38.647", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-74572", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T19:00:32.799131Z", "version": "2.0.3"}}]}, "published": "2026-08-15T13:18:02.837", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/18577e77c2c8adaadf1f7c6e9bcd1c0b14e5dcdd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1ebe51c29fa9755d5b2fea28727c051117907cf8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/75859a7cd77cd2ddaddbcb963e3fcd34738953af"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c3320873e0c04ce7b746fc8fe948f07bbbbdec33"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/deddd28fd83c264ee2ff5cd6b34449a9f1be6112"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: btrfs: zoned: fix deadlock between metadata writeback and transaction commit", "id": "2516991", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516991"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-833", "details": ["A flaw was found in the Linux kernel's btrfs zoned filesystem. A local user could trigger a deadlock when metadata writeback and transaction commit operations occur simultaneously. This deadlock causes the system to hang, leading to a Denial of Service (DoS)."], "name": "CVE-2026-74572", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74572\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74572\nhttps://lore.kernel.org/linux-cve-announce/2026081554-CVE-2026-74572-83b1@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[13bb483d32abb6f8ebd40141d87eb68f11cc2dd2,18577e77c2c8adaadf1f7c6e9bcd1c0b14e5dcdd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[13bb483d32abb6f8ebd40141d87eb68f11cc2dd2,c3320873e0c04ce7b746fc8fe948f07bbbbdec33)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[13bb483d32abb6f8ebd40141d87eb68f11cc2dd2,deddd28fd83c264ee2ff5cd6b34449a9f1be6112)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[13bb483d32abb6f8ebd40141d87eb68f11cc2dd2,75859a7cd77cd2ddaddbcb963e3fcd34738953af)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[13bb483d32abb6f8ebd40141d87eb68f11cc2dd2,1ebe51c29fa9755d5b2fea28727c051117907cf8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "fca3a1cd3ba47f1815e0c0fcdc9aafaf02ee0a75"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.5.5,6.6)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.151,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.103,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.44,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.8,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "7.2-rc6"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T15:00:04.339540+00:00", "updated": "2026-08-21T22:00:14.989609+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}