{"id":"CVE-2026-80528","revision":"d45e64741d49472eab23c1a3bca3da92","records":[{"revision":"d45e64741d49472eab23c1a3bca3da92","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80528","aliases":[],"title":"ceph: avoid fs reclaim while using current->journal_info","description":"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.","state":0,"publishedAt":"2026-08-26T14:37:06.781+00:00","modifiedAt":"2026-10-16T19:26:24.829+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/ceph/mds_client.c\"\n ],\n \"versions\": [\n {\n \"version\": \"315f24088048a51eed341c53be66ea477a3c7d16\",\n \"lessThan\": \"ca5fa2380dd90a0adb01580fa6225025351a90f6\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"315f24088048a51eed341c53be66ea477a3c7d16\",\n \"lessThan\": \"00c12f57a87f537fa8779258fb3a03003a99963e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"315f24088048a51eed341c53be66ea477a3c7d16\",\n \"lessThan\": \"4dbb2c02558e71f93510a6461d7e798b67426b49\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"315f24088048a51eed341c53be66ea477a3c7d16\",\n \"lessThan\": \"c8a21660c3b90864c391164eea5622e7b5b2897c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"315f24088048a51eed341c53be66ea477a3c7d16\",\n \"lessThan\": \"47b745747b3aa39064724a642884f9df924ddf20\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"315f24088048a51eed341c53be66ea477a3c7d16\",\n \"lessThan\": \"79d95b43ca090426399651ed580dd9bf2db36ab8\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"315f24088048a51eed341c53be66ea477a3c7d16\",\n \"lessThan\": \"b6a0989613072499633e761a1536428a466de7d3\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"315f24088048a51eed341c53be66ea477a3c7d16\",\n \"lessThan\": \"5b602344a49e039e792ce5a8923bcc61412ee134\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/ceph/mds_client.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.6\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.6\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.266\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.217\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.184\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.153\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.105\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.46\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.10\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/ca5fa2380dd90a0adb01580fa6225025351a90f6","https://git.kernel.org/stable/c/00c12f57a87f537fa8779258fb3a03003a99963e","https://git.kernel.org/stable/c/4dbb2c02558e71f93510a6461d7e798b67426b49","https://git.kernel.org/stable/c/c8a21660c3b90864c391164eea5622e7b5b2897c","https://git.kernel.org/stable/c/47b745747b3aa39064724a642884f9df924ddf20","https://git.kernel.org/stable/c/79d95b43ca090426399651ed580dd9bf2db36ab8","https://git.kernel.org/stable/c/b6a0989613072499633e761a1536428a466de7d3","https://git.kernel.org/stable/c/5b602344a49e039e792ce5a8923bcc61412ee134"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80528","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80528","identifiers":["CVE-2026-80528"]},"retained":false,"historicalAffected":[]}],"coverage":[]}