{"api_version":"1","generated_at":"2026-10-15T02:48:38+00:00","cve":"CVE-2026-90322","urls":{"html":"https://cve.report/CVE-2026-90322","api":"https://cve.report/api/cve/CVE-2026-90322.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90322","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90322"},"summary":{"title":"ocfs2/cluster: keep heartbeat local node stable","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2/cluster: keep heartbeat local node stable\n\no2nm_node_local_store() handles local=0 by stopping o2net and setting\ncl_local_node to O2NM_INVALID_NODE_NUM, but it leaves cl_has_local set. \nThat stale state makes o2nm_this_node() return 255, blocks a later local=1\nattempt with -EBUSY, and can feed 255 to heartbeat users that call\no2nm_this_node() dynamically.\n\nClearing cl_has_local is required when the local node is reset.  But\nheartbeat threads can still be running at that point.  They pin the local\nnode config item at startup, yet o2hb_do_disk_heartbeat() and thread\nteardown re-read o2nm_this_node() for the local slot and for\no2nm_undepend_this_node().  Once local=0 has cleared the live local-node\nstate, those dynamic reads return O2NM_MAX_NODES, which is also the\ninvalid node number 255.\n\nStore the local node number in the heartbeat region when the region\nstarts.  Use that stable node for heartbeat slot writes/checks,\nnegotiation messages, and the final configfs undepend.  Stop the heartbeat\nloop when the current local node no longer matches the stored node, and\nclear cl_has_local together with cl_local_node in the local=0 path so\nnodemanager state matches node removal.\n\nValidation reproduced this kernel report:\nKASAN slab-out-of-bounds in o2hb_do_disk_heartbeat+0x372/0xb30\nRIP: 0010:memset+0xf/0x20\nRead of size 8\nCall trace:\n  dump_stack_lvl+0x66/0xa0\n  print_report+0xd0/0x630\n  o2hb_do_disk_heartbeat+0x372/0xb30 (fs/ocfs2/cluster/heartbeat.c:1079)\n  srso_alias_return_thunk+0x5/0xfbef5\n  __virt_addr_valid+0x188/0x2f0\n  kasan_report+0xe4/0x120\n  o2hb_do_disk_heartbeat+0x5/0xb30 (fs/ocfs2/cluster/heartbeat.c:1079)\n  o2hb_thread+0x14e/0x770\n  kthread_affine_node+0x139/0x180\n  lockdep_hardirqs_on_prepare+0xda/0x190\n  trace_hardirqs_on+0x18/0x130\n  kthread+0x19d/0x1e0\n  ret_from_fork+0x37a/0x4d0\n  __switch_to+0x2d5/0x6f0\n  ret_from_fork_asm+0x1a/0x30","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:30","updated_at":"2026-09-17 17:17:30"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/70d7bb7a0be033e5ebe8a2c48974692b1318891c","name":"https://git.kernel.org/stable/c/70d7bb7a0be033e5ebe8a2c48974692b1318891c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8abb2b7c60d2b2c0f40606048c873096c03874d2","name":"https://git.kernel.org/stable/c/8abb2b7c60d2b2c0f40606048c873096c03874d2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/688bc88e2046dd6ce81ce18079b5254cb8dadc0e","name":"https://git.kernel.org/stable/c/688bc88e2046dd6ce81ce18079b5254cb8dadc0e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8e5cb90f212fda9f6cd29915a1ed74353108ceb3","name":"https://git.kernel.org/stable/c/8e5cb90f212fda9f6cd29915a1ed74353108ceb3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90322","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90322","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a7f6a5fb4bde142b622706e2006ba33f793e13ed 8e5cb90f212fda9f6cd29915a1ed74353108ceb3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a7f6a5fb4bde142b622706e2006ba33f793e13ed 8abb2b7c60d2b2c0f40606048c873096c03874d2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a7f6a5fb4bde142b622706e2006ba33f793e13ed 70d7bb7a0be033e5ebe8a2c48974692b1318891c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a7f6a5fb4bde142b622706e2006ba33f793e13ed 688bc88e2046dd6ce81ce18079b5254cb8dadc0e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/ocfs2/cluster/heartbeat.c","fs/ocfs2/cluster/nodemanager.c","fs/ocfs2/cluster/nodemanager.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8e5cb90f212fda9f6cd29915a1ed74353108ceb3","status":"affected","version":"a7f6a5fb4bde142b622706e2006ba33f793e13ed","versionType":"git"},{"lessThan":"8abb2b7c60d2b2c0f40606048c873096c03874d2","status":"affected","version":"a7f6a5fb4bde142b622706e2006ba33f793e13ed","versionType":"git"},{"lessThan":"70d7bb7a0be033e5ebe8a2c48974692b1318891c","status":"affected","version":"a7f6a5fb4bde142b622706e2006ba33f793e13ed","versionType":"git"},{"lessThan":"688bc88e2046dd6ce81ce18079b5254cb8dadc0e","status":"affected","version":"a7f6a5fb4bde142b622706e2006ba33f793e13ed","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/ocfs2/cluster/heartbeat.c","fs/ocfs2/cluster/nodemanager.c","fs/ocfs2/cluster/nodemanager.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.16"},{"lessThan":"2.6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"2.6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"2.6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"2.6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"2.6.16","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2/cluster: keep heartbeat local node stable\n\no2nm_node_local_store() handles local=0 by stopping o2net and setting\ncl_local_node to O2NM_INVALID_NODE_NUM, but it leaves cl_has_local set. \nThat stale state makes o2nm_this_node() return 255, blocks a later local=1\nattempt with -EBUSY, and can feed 255 to heartbeat users that call\no2nm_this_node() dynamically.\n\nClearing cl_has_local is required when the local node is reset.  But\nheartbeat threads can still be running at that point.  They pin the local\nnode config item at startup, yet o2hb_do_disk_heartbeat() and thread\nteardown re-read o2nm_this_node() for the local slot and for\no2nm_undepend_this_node().  Once local=0 has cleared the live local-node\nstate, those dynamic reads return O2NM_MAX_NODES, which is also the\ninvalid node number 255.\n\nStore the local node number in the heartbeat region when the region\nstarts.  Use that stable node for heartbeat slot writes/checks,\nnegotiation messages, and the final configfs undepend.  Stop the heartbeat\nloop when the current local node no longer matches the stored node, and\nclear cl_has_local together with cl_local_node in the local=0 path so\nnodemanager state matches node removal.\n\nValidation reproduced this kernel report:\nKASAN slab-out-of-bounds in o2hb_do_disk_heartbeat+0x372/0xb30\nRIP: 0010:memset+0xf/0x20\nRead of size 8\nCall trace:\n  dump_stack_lvl+0x66/0xa0\n  print_report+0xd0/0x630\n  o2hb_do_disk_heartbeat+0x372/0xb30 (fs/ocfs2/cluster/heartbeat.c:1079)\n  srso_alias_return_thunk+0x5/0xfbef5\n  __virt_addr_valid+0x188/0x2f0\n  kasan_report+0xe4/0x120\n  o2hb_do_disk_heartbeat+0x5/0xb30 (fs/ocfs2/cluster/heartbeat.c:1079)\n  o2hb_thread+0x14e/0x770\n  kthread_affine_node+0x139/0x180\n  lockdep_hardirqs_on_prepare+0xda/0x190\n  trace_hardirqs_on+0x18/0x130\n  kthread+0x19d/0x1e0\n  ret_from_fork+0x37a/0x4d0\n  __switch_to+0x2d5/0x6f0\n  ret_from_fork_asm+0x1a/0x30"}],"providerMetadata":{"dateUpdated":"2026-09-17T16:08:38.768Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8e5cb90f212fda9f6cd29915a1ed74353108ceb3"},{"url":"https://git.kernel.org/stable/c/8abb2b7c60d2b2c0f40606048c873096c03874d2"},{"url":"https://git.kernel.org/stable/c/70d7bb7a0be033e5ebe8a2c48974692b1318891c"},{"url":"https://git.kernel.org/stable/c/688bc88e2046dd6ce81ce18079b5254cb8dadc0e"}],"title":"ocfs2/cluster: keep heartbeat local node stable","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90322","datePublished":"2026-09-17T16:08:38.768Z","dateReserved":"2026-09-11T19:38:34.802Z","dateUpdated":"2026-09-17T16:08:38.768Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:30","lastModifiedDate":"2026-09-17 17:17:30","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90322","Ordinal":"1","Title":"ocfs2/cluster: keep heartbeat local node stable","CVE":"CVE-2026-90322","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90322","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2/cluster: keep heartbeat local node stable\n\no2nm_node_local_store() handles local=0 by stopping o2net and setting\ncl_local_node to O2NM_INVALID_NODE_NUM, but it leaves cl_has_local set. \nThat stale state makes o2nm_this_node() return 255, blocks a later local=1\nattempt with -EBUSY, and can feed 255 to heartbeat users that call\no2nm_this_node() dynamically.\n\nClearing cl_has_local is required when the local node is reset.  But\nheartbeat threads can still be running at that point.  They pin the local\nnode config item at startup, yet o2hb_do_disk_heartbeat() and thread\nteardown re-read o2nm_this_node() for the local slot and for\no2nm_undepend_this_node().  Once local=0 has cleared the live local-node\nstate, those dynamic reads return O2NM_MAX_NODES, which is also the\ninvalid node number 255.\n\nStore the local node number in the heartbeat region when the region\nstarts.  Use that stable node for heartbeat slot writes/checks,\nnegotiation messages, and the final configfs undepend.  Stop the heartbeat\nloop when the current local node no longer matches the stored node, and\nclear cl_has_local together with cl_local_node in the local=0 path so\nnodemanager state matches node removal.\n\nValidation reproduced this kernel report:\nKASAN slab-out-of-bounds in o2hb_do_disk_heartbeat+0x372/0xb30\nRIP: 0010:memset+0xf/0x20\nRead of size 8\nCall trace:\n  dump_stack_lvl+0x66/0xa0\n  print_report+0xd0/0x630\n  o2hb_do_disk_heartbeat+0x372/0xb30 (fs/ocfs2/cluster/heartbeat.c:1079)\n  srso_alias_return_thunk+0x5/0xfbef5\n  __virt_addr_valid+0x188/0x2f0\n  kasan_report+0xe4/0x120\n  o2hb_do_disk_heartbeat+0x5/0xb30 (fs/ocfs2/cluster/heartbeat.c:1079)\n  o2hb_thread+0x14e/0x770\n  kthread_affine_node+0x139/0x180\n  lockdep_hardirqs_on_prepare+0xda/0x190\n  trace_hardirqs_on+0x18/0x130\n  kthread+0x19d/0x1e0\n  ret_from_fork+0x37a/0x4d0\n  __switch_to+0x2d5/0x6f0\n  ret_from_fork_asm+0x1a/0x30","Type":"Description","Title":"ocfs2/cluster: keep heartbeat local node stable"}]}}}