CVE - CVE-2024-47143

CVE-ID
CVE-2024-47143	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: dma-debug: fix a possible deadlock on radix_lock radix_lock() shouldn't be held while holding dma_hash_entry[idx].lock otherwise, there's a possible deadlock scenario when dma debug API is called holding rq_lock(): CPU0 CPU1 CPU2 dma_free_attrs() check_unmap() add_dma_entry() __schedule() //out (A) rq_lock() get_hash_bucket() (A) dma_entry_hash check_sync() (A) radix_lock() (W) dma_entry_hash dma_entry_free() (W) radix_lock() // CPU2's one (W) rq_lock() CPU1 situation can happen when it extending radix tree and it tries to wake up kswapd via wake_all_kswapd(). CPU2 situation can happen while perf_event_task_sched_out() (i.e. dma sync operation is called while deleting perf_event using etm and etr tmc which are Arm Coresight hwtracing driver backends). To remove this possible situation, call dma_entry_free() after put_hash_bucket() in check_unmap().
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/3ccce34a5c3f5c9541108a451657ade621524b32 URL:https://git.kernel.org/stable/c/3ccce34a5c3f5c9541108a451657ade621524b32 MISC:https://git.kernel.org/stable/c/7543c3e3b9b88212fcd0aaf5cab5588797bdc7de URL:https://git.kernel.org/stable/c/7543c3e3b9b88212fcd0aaf5cab5588797bdc7de MISC:https://git.kernel.org/stable/c/8c1b4fea8d62285f5e1a8194889b39661608bd8a URL:https://git.kernel.org/stable/c/8c1b4fea8d62285f5e1a8194889b39661608bd8a MISC:https://git.kernel.org/stable/c/c212d91070beca0d03fef7bf988baf4ff4b3eee4 URL:https://git.kernel.org/stable/c/c212d91070beca0d03fef7bf988baf4ff4b3eee4 MISC:https://git.kernel.org/stable/c/efe1b9bbf356357fdff0399af361133d6e3ba18e URL:https://git.kernel.org/stable/c/efe1b9bbf356357fdff0399af361133d6e3ba18e MISC:https://git.kernel.org/stable/c/f2b95248a16c5186d1c658fc0aeb2f3bd95e5259 URL:https://git.kernel.org/stable/c/f2b95248a16c5186d1c658fc0aeb2f3bd95e5259
Assigning CNA
kernel.org
Date Record Created
20250109	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 (20250109)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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