{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-90322", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.802Z", "datePublished": "2026-09-17T16:08:38.768Z", "dateUpdated": "2026-10-21T12:50:57.872Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:50:57.872Z" }, "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" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ocfs2/cluster/heartbeat.c", "fs/ocfs2/cluster/nodemanager.c", "fs/ocfs2/cluster/nodemanager.h" ], "versions": [ { "version": "a7f6a5fb4bde142b622706e2006ba33f793e13ed", "lessThan": "d64708cc119db01fbc55017ee6e987b680ebd59c", "status": "affected", "versionType": "git" }, { "version": "a7f6a5fb4bde142b622706e2006ba33f793e13ed", "lessThan": "8e5cb90f212fda9f6cd29915a1ed74353108ceb3", "status": "affected", "versionType": "git" }, { "version": "a7f6a5fb4bde142b622706e2006ba33f793e13ed", "lessThan": "8abb2b7c60d2b2c0f40606048c873096c03874d2", "status": "affected", "versionType": "git" }, { "version": "a7f6a5fb4bde142b622706e2006ba33f793e13ed", "lessThan": "70d7bb7a0be033e5ebe8a2c48974692b1318891c", "status": "affected", "versionType": "git" }, { "version": "a7f6a5fb4bde142b622706e2006ba33f793e13ed", "lessThan": "688bc88e2046dd6ce81ce18079b5254cb8dadc0e", "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/ocfs2/cluster/heartbeat.c", "fs/ocfs2/cluster/nodemanager.c", "fs/ocfs2/cluster/nodemanager.h" ], "versions": [ { "version": "2.6.16", "status": "affected" }, { "version": "0", "lessThan": "2.6.16", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "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": "2.6.16", "versionEndExcluding": "6.6.160" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "6.12.110" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "6.18.52" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "7.2.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.16", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/d64708cc119db01fbc55017ee6e987b680ebd59c" }, { "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" } } } }