CVE-2024-56641
- Source
- https://cve.org/CVERecord?id=CVE-2024-56641
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-56641.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-56641
- Downstream
- Related
- Published
- 2024-12-27T15:02:42Z
- Modified
- 2026-08-12T03:30:28Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- net/smc: initialize close_work early to avoid warning
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net/smc: initialize close_work early to avoid warning
We encountered a warning that close_work was canceled before initialization.
WARNING: CPU: 7 PID: 111103 at kernel/workqueue.c:3047 __flush_work+0x19e/0x1b0 Workqueue: events smc_lgr_terminate_work [smc] RIP: 0010:__flush_work+0x19e/0x1b0 Call Trace: ? __wake_up_common+0x7a/0x190 ? work_busy+0x80/0x80 __cancel_work_timer+0xe3/0x160 smc_close_cancel_work+0x1a/0x70 [smc] smc_close_active_abort+0x207/0x360 [smc] __smc_lgr_terminate.part.38+0xc8/0x180 [smc] process_one_work+0x19e/0x340 worker_thread+0x30/0x370 ? process_one_work+0x340/0x340 kthread+0x117/0x130 ? __kthread_cancel_work+0x50/0x50 ret_from_fork+0x22/0x30
This is because when smc_close_cancel_work is triggered, e.g. the RDMA driver is rmmod and the LGR is terminated, the conn->close_work is flushed before initialization, resulting in WARN_ON(!work->func).
_smc_lgr_terminate | smc_connect{rdma|ism}
| smc_conn_create | \- smc_lgr_register_connfor conn in lgr->conns_all | - smc_conn_kill | - smc_close_active_abort | - smc_close_cancel_work | - cancel_work_sync | - __flush_work | (close_work) | | smc_close_init | - INIT_WORK(&close_work)
So fix this by initializing close_work before establishing the connection.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56641.json" }- References
-
- https://git.kernel.org/stable/c/0541db8ee32c09463a72d0987382b3a3336b0043
- https://git.kernel.org/stable/c/6638e52dcfafaf1b9cbc34544f0c832db0069ea1
- https://git.kernel.org/stable/c/f0c37002210aaede10dae849d1a78efc2243add2
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56641.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-56641
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git