CVE - CVE-2024-56641

CVE-ID
CVE-2024-56641	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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_conn for 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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0541db8ee32c09463a72d0987382b3a3336b0043 URL:https://git.kernel.org/stable/c/0541db8ee32c09463a72d0987382b3a3336b0043 MISC:https://git.kernel.org/stable/c/6638e52dcfafaf1b9cbc34544f0c832db0069ea1 URL:https://git.kernel.org/stable/c/6638e52dcfafaf1b9cbc34544f0c832db0069ea1 MISC:https://git.kernel.org/stable/c/f0c37002210aaede10dae849d1a78efc2243add2 URL:https://git.kernel.org/stable/c/f0c37002210aaede10dae849d1a78efc2243add2
Assigning CNA
kernel.org
Date Record Created
20241227	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241227)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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