Answer in brief
CVE-2026-90322 records a Unknown severity vulnerability in ocfs2/cluster: keep heartbeat local node stable. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <8e5cb90f212fda9f6cd29915a1ed74353108ceb3 || >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <8abb2b7c60d2b2c0f40606048c873096c03874d2 || >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <70d7bb7a0be033e5ebe8a2c48974692b1318891c || >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <688bc88e2046dd6ce81ce18079b5254cb8dadc0e | 8e5cb90f212fda9f6cd29915a1ed74353108ceb3, 8abb2b7c60d2b2c0f40606048c873096c03874d2, 70d7bb7a0be033e5ebe8a2c48974692b1318891c, 688bc88e2046dd6ce81ce18079b5254cb8dadc0e |
| Linux/Linuxgeneric | 2.6.16 | Not reported |
| Linux/Linuxgeneric | >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <d64708cc119db01fbc55017ee6e987b680ebd59c || >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <8e5cb90f212fda9f6cd29915a1ed74353108ceb3 || >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <8abb2b7c60d2b2c0f40606048c873096c03874d2 || >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <70d7bb7a0be033e5ebe8a2c48974692b1318891c || >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <688bc88e2046dd6ce81ce18079b5254cb8dadc0e | d64708cc119db01fbc55017ee6e987b680ebd59c, 8e5cb90f212fda9f6cd29915a1ed74353108ceb3, 8abb2b7c60d2b2c0f40606048c873096c03874d2, 70d7bb7a0be033e5ebe8a2c48974692b1318891c, 688bc88e2046dd6ce81ce18079b5254cb8dadc0e |
| Linux/Linuxgeneric | >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <d429482a67df16a30afaf9a3f1fe239fe73b44de || >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <d64708cc119db01fbc55017ee6e987b680ebd59c || >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <8e5cb90f212fda9f6cd29915a1ed74353108ceb3 || >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <8abb2b7c60d2b2c0f40606048c873096c03874d2 || >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <70d7bb7a0be033e5ebe8a2c48974692b1318891c || >=a7f6a5fb4bde142b622706e2006ba33f793e13ed <688bc88e2046dd6ce81ce18079b5254cb8dadc0e | d429482a67df16a30afaf9a3f1fe239fe73b44de, d64708cc119db01fbc55017ee6e987b680ebd59c, 8e5cb90f212fda9f6cd29915a1ed74353108ceb3, 8abb2b7c60d2b2c0f40606048c873096c03874d2, 70d7bb7a0be033e5ebe8a2c48974692b1318891c, 688bc88e2046dd6ce81ce18079b5254cb8dadc0e |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: ocfs2/cluster: keep heartbeat local node stable o2nm_node_local_store() handles local=0 by stopping o2net and setting cl_local_node to O2NM_INVALID_NODE_NUM, but it leaves cl_has_local set. That stale state makes o2nm_this_node() return 255, blocks a later local=1 attempt with -EBUSY, and can feed 255 to heartbeat users that call o2nm_this_node() dynamically. Clearing cl_has_local is required when the local node is reset. But heartbeat threads can still be running at that point. They pin the local node config item at startup, yet o2hb_do_disk_heartbeat() and thread teardown re-read o2nm_this_node() for the local slot and for o2nm_undepend_this_node(). Once local=0 has cleared the live local-node state, those dynamic reads return O2NM_MAX_NODES, which is also the invalid node number 255. Store the local node number in the heartbeat region when the region starts. Use that stable node for heartbeat slot writes/checks, negotiation messages, and the final configfs undepend. Stop the heartbeat loop when the current local node no longer matches the stored node, and clear cl_has_local together with cl_local_node in the local=0 path so nodemanager state matches node removal. Validation reproduced this kernel report: KASAN slab-out-of-bounds in o2hb_do_disk_heartbeat+0x372/0xb30 RIP: 0010:memset+0xf/0x20 Read of size 8 Call trace: dump_stack_lvl+0x66/0xa0 print_report+0xd0/0x630 o2hb_do_disk_heartbeat+0x372/0xb30 (fs/ocfs2/cluster/heartbeat.c:1079) srso_alias_return_thunk+0x5/0xfbef5 __virt_addr_valid+0x188/0x2f0 kasan_report+0xe4/0x120 o2hb_do_disk_heartbeat+0x5/0xb30 (fs/ocfs2/cluster/heartbeat.c:1079) o2hb_thread+0x14e/0x770 kthread_affine_node+0x139/0x180 lockdep_hardirqs_on_prepare+0xda/0x190 trace_hardirqs_on+0x18/0x130 kthread+0x19d/0x1e0 ret_from_fork+0x37a/0x4d0 __switch_to+0x2d5/0x6f0 ret_from_fork_asm+0x1a/0x30
Quoted source text, attributed separately from HOL analysis.