CVE-2026-80528

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80528", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.764Z", "datePublished": "2026-08-26T14:37:06.781Z", "dateUpdated": "2026-10-16T19:26:24.829Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-27T05:01:23.093Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: avoid fs reclaim while using current->journal_info\n\nhandle_reply() stores a `ceph_mds_request` pointer in\n`current->journal_info` while filling the inode and dentry cache from\nan MDS reply.\n\nAn allocation in this section can enter direct reclaim and prune\ndentries from another filesystem. If this dirties an ext4 inode, ext4\nstarts a JBD2 transaction. JBD2 interprets the Ceph request in\n`current->journal_info` as a journal handle and dereferences the\nrequest's `r_tid` as `h_transaction`, causing a kernel crash, e.g.:\n\n Unable to handle kernel paging request at virtual address 00000000077b4818\n [...]\n Internal error: Oops: 0000000096000004 [#1] SMP\n Modules linked in:\n CPU: 6 UID: 0 PID: 2699135 Comm: kworker/6:3 Tainted: G W 6.18.38-i3 #1113 NONE\n [...]\n Workqueue: ceph-msgr ceph_con_workfn\n pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : jbd2__journal_start+0x2c/0x208\n lr : __ext4_journal_start_sb+0x100/0x178\n [...]\n Call trace:\n jbd2__journal_start+0x2c/0x208 (P)\n __ext4_journal_start_sb+0x100/0x178\n ext4_dirty_inode+0x3c/0x90\n __mark_inode_dirty+0x58/0x400\n iput.part.0+0x2b0/0x370\n iput+0x18/0x30\n dentry_unlink_inode+0xc0/0x158\n __dentry_kill+0x80/0x250\n shrink_dentry_list+0x90/0x130\n prune_dcache_sb+0x60/0x98\n super_cache_scan+0xe8/0x190\n do_shrink_slab+0x174/0x388\n shrink_slab+0xd8/0x4c0\n shrink_node+0x31c/0x908\n do_try_to_free_pages+0xd0/0x508\n try_to_free_pages+0x11c/0x238\n __alloc_frozen_pages_noprof+0x4d0/0xdd0\n __folio_alloc_noprof+0x18/0x70\n __filemap_get_folio+0x248/0x440\n ceph_readdir_prepopulate+0x570/0x9e8\n mds_dispatch+0x1424/0x1ba0\n ceph_con_process_message+0x74/0xa0\n ceph_con_v1_try_read+0x3a0/0x1510\n ceph_con_workfn+0x260/0x460\n\nEnter a scoped NOFS allocation context and leave it after clearing\n`journal_info`. This prevents filesystem reclaim from recursing into\nanother filesystem while the field contains Ceph-private data."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL"}, "scenarios": [{"lang": "en", "value": "AV:N - The crash path runs in the ceph-msgr kworker handling CEPH_MSG_CLIENT_REPLY from the MDS over TCP; on Ceph/Rook/Kubernetes nodes with cephfs mounted, a compromised or malicious MDS peer drives handle_reply() remotely without requiring a victim syscall.\nAC:L - A MDS peer can supply large readdir/lookup replies to force GFP_KERNEL allocations in ceph_fill_trace/ceph_readdir_prepopulate while journal_info is set, making direct reclaim into ext4 dentry pruning likely without rare kernel configs or uncontrollable heap layout.\nPR:N - Exploitation requires no Linux UID, capability, or init-namespace root on the victim; any kernel cephfs client already connected to an attacker-controlled or compromised cluster suffices, consistent with other MDS-reply client CVEs (e.g., CVE-2026-80527).\nUI:N - Once cephfs is mounted (standard in Ceph deployments), MDS replies are processed automatically in kworker context; attackers need not induce a victim to mount media or perform a one-off interactive step at exploitation time.\nS:U - Impact is a kernel oops from JBD2 mistyping current->journal_info on the same host; it does not cross VM, container, or IOMMU boundaries to another security authority.\nC:H - While journal_info holds a ceph_mds_request pointer, ext4 reclaim invokes jbd2__journal_start(), type-confusing that object as a journal handle and dereferencing r_tid as h_transaction\u2014a cross-subsystem type confusion with kernel-pointer read potential per CNA memory-safety guidance.\nI:H - Type confusion of current->journal_info between Ceph and JBD2 misinterprets live ceph_mds_request fields as journal-handle metadata during MDS reply processing; kernel CNA guidance classes type confusion as High integrity impact even when the immediate fault is an oops.\nA:H - The reported ARM64 oops in jbd2__journal_start() from invalid h_transaction dereference reliably crashes the ceph-msgr worker and can panic the node; reclaim during MDS reply handling enables repeated remote-triggered denial-of-service."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ceph/mds_client.c"], "versions": [{"version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "ca5fa2380dd90a0adb01580fa6225025351a90f6", "status": "affected", "versionType": "git"}, {"version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "00c12f57a87f537fa8779258fb3a03003a99963e", "status": "affected", "versionType": "git"}, {"version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "4dbb2c02558e71f93510a6461d7e798b67426b49", "status": "affected", "versionType": "git"}, {"version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "c8a21660c3b90864c391164eea5622e7b5b2897c", "status": "affected", "versionType": "git"}, {"version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "47b745747b3aa39064724a642884f9df924ddf20", "status": "affected", "versionType": "git"}, {"version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "79d95b43ca090426399651ed580dd9bf2db36ab8", "status": "affected", "versionType": "git"}, {"version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "b6a0989613072499633e761a1536428a466de7d3", "status": "affected", "versionType": "git"}, {"version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "5b602344a49e039e792ce5a8923bcc61412ee134", "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/ceph/mds_client.c"], "versions": [{"version": "4.6", "status": "affected"}, {"version": "0", "lessThan": "4.6", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.266", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.217", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.184", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.153", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.105", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.46", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.10", "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": "4.6", "versionEndExcluding": "5.10.266"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "5.15.217"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.1.184"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.6.153"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.12.105"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "6.18.46"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "7.1.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ca5fa2380dd90a0adb01580fa6225025351a90f6"}, {"url": "https://git.kernel.org/stable/c/00c12f57a87f537fa8779258fb3a03003a99963e"}, {"url": "https://git.kernel.org/stable/c/4dbb2c02558e71f93510a6461d7e798b67426b49"}, {"url": "https://git.kernel.org/stable/c/c8a21660c3b90864c391164eea5622e7b5b2897c"}, {"url": "https://git.kernel.org/stable/c/47b745747b3aa39064724a642884f9df924ddf20"}, {"url": "https://git.kernel.org/stable/c/79d95b43ca090426399651ed580dd9bf2db36ab8"}, {"url": "https://git.kernel.org/stable/c/b6a0989613072499633e761a1536428a466de7d3"}, {"url": "https://git.kernel.org/stable/c/5b602344a49e039e792ce5a8923bcc61412ee134"}], "title": "ceph: avoid fs reclaim while using current->journal_info", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-80528", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T19:16:38.118673Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T19:26:24.829Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-80528", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T19:16:38.118673Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T19:16:39.009Z"}}], "cna": {"title": "ceph: avoid fs reclaim while using current->journal_info", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 9.8, "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:N - The crash path runs in the ceph-msgr kworker handling CEPH_MSG_CLIENT_REPLY from the MDS over TCP; on Ceph/Rook/Kubernetes nodes with cephfs mounted, a compromised or malicious MDS peer drives handle_reply() remotely without requiring a victim syscall.\nAC:L - A MDS peer can supply large readdir/lookup replies to force GFP_KERNEL allocations in ceph_fill_trace/ceph_readdir_prepopulate while journal_info is set, making direct reclaim into ext4 dentry pruning likely without rare kernel configs or uncontrollable heap layout.\nPR:N - Exploitation requires no Linux UID, capability, or init-namespace root on the victim; any kernel cephfs client already connected to an attacker-controlled or compromised cluster suffices, consistent with other MDS-reply client CVEs (e.g., CVE-2026-80527).\nUI:N - Once cephfs is mounted (standard in Ceph deployments), MDS replies are processed automatically in kworker context; attackers need not induce a victim to mount media or perform a one-off interactive step at exploitation time.\nS:U - Impact is a kernel oops from JBD2 mistyping current->journal_info on the same host; it does not cross VM, container, or IOMMU boundaries to another security authority.\nC:H - While journal_info holds a ceph_mds_request pointer, ext4 reclaim invokes jbd2__journal_start(), type-confusing that object as a journal handle and dereferencing r_tid as h_transaction\u2014a cross-subsystem type confusion with kernel-pointer read potential per CNA memory-safety guidance.\nI:H - Type confusion of current->journal_info between Ceph and JBD2 misinterprets live ceph_mds_request fields as journal-handle metadata during MDS reply processing; kernel CNA guidance classes type confusion as High integrity impact even when the immediate fault is an oops.\nA:H - The reported ARM64 oops in jbd2__journal_start() from invalid h_transaction dereference reliably crashes the ceph-msgr worker and can panic the node; reclaim during MDS reply handling enables repeated remote-triggered denial-of-service."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "ca5fa2380dd90a0adb01580fa6225025351a90f6", "versionType": "git"}, {"status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "00c12f57a87f537fa8779258fb3a03003a99963e", "versionType": "git"}, {"status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "4dbb2c02558e71f93510a6461d7e798b67426b49", "versionType": "git"}, {"status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "c8a21660c3b90864c391164eea5622e7b5b2897c", "versionType": "git"}, {"status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "47b745747b3aa39064724a642884f9df924ddf20", "versionType": "git"}, {"status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "79d95b43ca090426399651ed580dd9bf2db36ab8", "versionType": "git"}, {"status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "b6a0989613072499633e761a1536428a466de7d3", "versionType": "git"}, {"status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "lessThan": "5b602344a49e039e792ce5a8923bcc61412ee134", "versionType": "git"}], "programFiles": ["fs/ceph/mds_client.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.6"}, {"status": "unaffected", "version": "0", "lessThan": "4.6", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.266", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.217", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.184", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.153", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.105", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.46", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.10", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/ceph/mds_client.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/ca5fa2380dd90a0adb01580fa6225025351a90f6"}, {"url": "https://git.kernel.org/stable/c/00c12f57a87f537fa8779258fb3a03003a99963e"}, {"url": "https://git.kernel.org/stable/c/4dbb2c02558e71f93510a6461d7e798b67426b49"}, {"url": "https://git.kernel.org/stable/c/c8a21660c3b90864c391164eea5622e7b5b2897c"}, {"url": "https://git.kernel.org/stable/c/47b745747b3aa39064724a642884f9df924ddf20"}, {"url": "https://git.kernel.org/stable/c/79d95b43ca090426399651ed580dd9bf2db36ab8"}, {"url": "https://git.kernel.org/stable/c/b6a0989613072499633e761a1536428a466de7d3"}, {"url": "https://git.kernel.org/stable/c/5b602344a49e039e792ce5a8923bcc61412ee134"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: avoid fs reclaim while using current->journal_info\n\nhandle_reply() stores a `ceph_mds_request` pointer in\n`current->journal_info` while filling the inode and dentry cache from\nan MDS reply.\n\nAn allocation in this section can enter direct reclaim and prune\ndentries from another filesystem. If this dirties an ext4 inode, ext4\nstarts a JBD2 transaction. JBD2 interprets the Ceph request in\n`current->journal_info` as a journal handle and dereferences the\nrequest's `r_tid` as `h_transaction`, causing a kernel crash, e.g.:\n\n Unable to handle kernel paging request at virtual address 00000000077b4818\n [...]\n Internal error: Oops: 0000000096000004 [#1] SMP\n Modules linked in:\n CPU: 6 UID: 0 PID: 2699135 Comm: kworker/6:3 Tainted: G W 6.18.38-i3 #1113 NONE\n [...]\n Workqueue: ceph-msgr ceph_con_workfn\n pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : jbd2__journal_start+0x2c/0x208\n lr : __ext4_journal_start_sb+0x100/0x178\n [...]\n Call trace:\n jbd2__journal_start+0x2c/0x208 (P)\n __ext4_journal_start_sb+0x100/0x178\n ext4_dirty_inode+0x3c/0x90\n __mark_inode_dirty+0x58/0x400\n iput.part.0+0x2b0/0x370\n iput+0x18/0x30\n dentry_unlink_inode+0xc0/0x158\n __dentry_kill+0x80/0x250\n shrink_dentry_list+0x90/0x130\n prune_dcache_sb+0x60/0x98\n super_cache_scan+0xe8/0x190\n do_shrink_slab+0x174/0x388\n shrink_slab+0xd8/0x4c0\n shrink_node+0x31c/0x908\n do_try_to_free_pages+0xd0/0x508\n try_to_free_pages+0x11c/0x238\n __alloc_frozen_pages_noprof+0x4d0/0xdd0\n __folio_alloc_noprof+0x18/0x70\n __filemap_get_folio+0x248/0x440\n ceph_readdir_prepopulate+0x570/0x9e8\n mds_dispatch+0x1424/0x1ba0\n ceph_con_process_message+0x74/0xa0\n ceph_con_v1_try_read+0x3a0/0x1510\n ceph_con_workfn+0x260/0x460\n\nEnter a scoped NOFS allocation context and leave it after clearing\n`journal_info`. This prevents filesystem reclaim from recursing into\nanother filesystem while the field contains Ceph-private data."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.266", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.217", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.184", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.153", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.105", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.46", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.10", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "4.6"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-27T05:01:23.093Z"}}}, "cveMetadata": {"cveId": "CVE-2026-80528", "state": "PUBLISHED", "dateUpdated": "2026-10-16T19:26:24.829Z", "dateReserved": "2026-08-26T14:34:25.764Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-26T14:37:06.781Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/ceph/mds_client.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "ca5fa2380dd90a0adb01580fa6225025351a90f6", "status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "versionType": "git"}, {"lessThan": "00c12f57a87f537fa8779258fb3a03003a99963e", "status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "versionType": "git"}, {"lessThan": "4dbb2c02558e71f93510a6461d7e798b67426b49", "status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "versionType": "git"}, {"lessThan": "c8a21660c3b90864c391164eea5622e7b5b2897c", "status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "versionType": "git"}, {"lessThan": "47b745747b3aa39064724a642884f9df924ddf20", "status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "versionType": "git"}, {"lessThan": "79d95b43ca090426399651ed580dd9bf2db36ab8", "status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "versionType": "git"}, {"lessThan": "b6a0989613072499633e761a1536428a466de7d3", "status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "versionType": "git"}, {"lessThan": "5b602344a49e039e792ce5a8923bcc61412ee134", "status": "affected", "version": "315f24088048a51eed341c53be66ea477a3c7d16", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/ceph/mds_client.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.6"}, {"lessThan": "4.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.266", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.217", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.184", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.153", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.105", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.46", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.10", "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\nceph: avoid fs reclaim while using current->journal_info\n\nhandle_reply() stores a `ceph_mds_request` pointer in\n`current->journal_info` while filling the inode and dentry cache from\nan MDS reply.\n\nAn allocation in this section can enter direct reclaim and prune\ndentries from another filesystem. If this dirties an ext4 inode, ext4\nstarts a JBD2 transaction. JBD2 interprets the Ceph request in\n`current->journal_info` as a journal handle and dereferences the\nrequest's `r_tid` as `h_transaction`, causing a kernel crash, e.g.:\n\n Unable to handle kernel paging request at virtual address 00000000077b4818\n [...]\n Internal error: Oops: 0000000096000004 [#1] SMP\n Modules linked in:\n CPU: 6 UID: 0 PID: 2699135 Comm: kworker/6:3 Tainted: G W 6.18.38-i3 #1113 NONE\n [...]\n Workqueue: ceph-msgr ceph_con_workfn\n pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : jbd2__journal_start+0x2c/0x208\n lr : __ext4_journal_start_sb+0x100/0x178\n [...]\n Call trace:\n jbd2__journal_start+0x2c/0x208 (P)\n __ext4_journal_start_sb+0x100/0x178\n ext4_dirty_inode+0x3c/0x90\n __mark_inode_dirty+0x58/0x400\n iput.part.0+0x2b0/0x370\n iput+0x18/0x30\n dentry_unlink_inode+0xc0/0x158\n __dentry_kill+0x80/0x250\n shrink_dentry_list+0x90/0x130\n prune_dcache_sb+0x60/0x98\n super_cache_scan+0xe8/0x190\n do_shrink_slab+0x174/0x388\n shrink_slab+0xd8/0x4c0\n shrink_node+0x31c/0x908\n do_try_to_free_pages+0xd0/0x508\n try_to_free_pages+0x11c/0x238\n __alloc_frozen_pages_noprof+0x4d0/0xdd0\n __folio_alloc_noprof+0x18/0x70\n __filemap_get_folio+0x248/0x440\n ceph_readdir_prepopulate+0x570/0x9e8\n mds_dispatch+0x1424/0x1ba0\n ceph_con_process_message+0x74/0xa0\n ceph_con_v1_try_read+0x3a0/0x1510\n ceph_con_workfn+0x260/0x460\n\nEnter a scoped NOFS allocation context and leave it after clearing\n`journal_info`. This prevents filesystem reclaim from recursing into\nanother filesystem while the field contains Ceph-private data."}], "id": "CVE-2026-80528", "lastModified": "2026-10-16T20:17:57.693", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-80528", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T19:16:38.118673Z", "version": "2.0.3"}}]}, "published": "2026-08-26T15:17:06.667", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/00c12f57a87f537fa8779258fb3a03003a99963e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/47b745747b3aa39064724a642884f9df924ddf20"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4dbb2c02558e71f93510a6461d7e798b67426b49"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5b602344a49e039e792ce5a8923bcc61412ee134"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/79d95b43ca090426399651ed580dd9bf2db36ab8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b6a0989613072499633e761a1536428a466de7d3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c8a21660c3b90864c391164eea5622e7b5b2897c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ca5fa2380dd90a0adb01580fa6225025351a90f6"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: ceph: avoid fs reclaim while using current->journal_info", "id": "2524502", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2524502"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-843", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nceph: avoid fs reclaim while using current->journal_info\nhandle_reply() stores a `ceph_mds_request` pointer in\n`current->journal_info` while filling the inode and dentry cache from\nan MDS reply.\nAn allocation in this section can enter direct reclaim and prune\ndentries from another filesystem. If this dirties an ext4 inode, ext4\nstarts a JBD2 transaction. JBD2 interprets the Ceph request in\n`current->journal_info` as a journal handle and dereferences the\nrequest's `r_tid` as `h_transaction`, causing a kernel crash, e.g.:\nUnable to handle kernel paging request at virtual address 00000000077b4818\n[...]\nInternal error: Oops: 0000000096000004 [#1] SMP\nModules linked in:\nCPU: 6 UID: 0 PID: 2699135 Comm: kworker/6:3 Tainted: G W 6.18.38-i3 #1113 NONE\n[...]\nWorkqueue: ceph-msgr ceph_con_workfn\npstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : jbd2__journal_start+0x2c/0x208\nlr : __ext4_journal_start_sb+0x100/0x178\n[...]\nCall trace:\njbd2__journal_start+0x2c/0x208 (P)\n__ext4_journal_start_sb+0x100/0x178\next4_dirty_inode+0x3c/0x90\n__mark_inode_dirty+0x58/0x400\niput.part.0+0x2b0/0x370\niput+0x18/0x30\ndentry_unlink_inode+0xc0/0x158\n__dentry_kill+0x80/0x250\nshrink_dentry_list+0x90/0x130\nprune_dcache_sb+0x60/0x98\nsuper_cache_scan+0xe8/0x190\ndo_shrink_slab+0x174/0x388\nshrink_slab+0xd8/0x4c0\nshrink_node+0x31c/0x908\ndo_try_to_free_pages+0xd0/0x508\ntry_to_free_pages+0x11c/0x238\n__alloc_frozen_pages_noprof+0x4d0/0xdd0\n__folio_alloc_noprof+0x18/0x70\n__filemap_get_folio+0x248/0x440\nceph_readdir_prepopulate+0x570/0x9e8\nmds_dispatch+0x1424/0x1ba0\nceph_con_process_message+0x74/0xa0\nceph_con_v1_try_read+0x3a0/0x1510\nceph_con_workfn+0x260/0x460\nEnter a scoped NOFS allocation context and leave it after clearing\n`journal_info`. This prevents filesystem reclaim from recursing into\nanother filesystem while the field contains Ceph-private data.", "A flaw was found in the Linux kernel's Ceph filesystem. When the kernel handles replies and fills inode and dentry caches, a memory allocation can trigger a memory reclamation process. This process can incorrectly interpret Ceph-specific data as a journal handle if it interacts with another filesystem, such as ext4. This misinterpretation ultimately leads to a kernel crash, resulting in a Denial of Service (DoS) for the system."], "name": "CVE-2026-80528", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80528\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80528\nhttps://lore.kernel.org/linux-cve-announce/2026082602-CVE-2026-80528-0b2f@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[315f24088048a51eed341c53be66ea477a3c7d16,ca5fa2380dd90a0adb01580fa6225025351a90f6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[315f24088048a51eed341c53be66ea477a3c7d16,00c12f57a87f537fa8779258fb3a03003a99963e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[315f24088048a51eed341c53be66ea477a3c7d16,4dbb2c02558e71f93510a6461d7e798b67426b49)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[315f24088048a51eed341c53be66ea477a3c7d16,c8a21660c3b90864c391164eea5622e7b5b2897c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[315f24088048a51eed341c53be66ea477a3c7d16,47b745747b3aa39064724a642884f9df924ddf20)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[315f24088048a51eed341c53be66ea477a3c7d16,79d95b43ca090426399651ed580dd9bf2db36ab8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[315f24088048a51eed341c53be66ea477a3c7d16,b6a0989613072499633e761a1536428a466de7d3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[315f24088048a51eed341c53be66ea477a3c7d16,5b602344a49e039e792ce5a8923bcc61412ee134)"}}], "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": "generic", "value": "4.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.266,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.217,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.184,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.153,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.105,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.46,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.10,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "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": "2026-08-26T15:45:04.430781+00:00", "updated": "2026-08-28T15:45:03.224085+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}