CVE - CVE-2024-57946

CVE-ID
CVE-2024-57946	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: virtio-blk: don't keep queue frozen during system suspend Commit 4ce6e2db00de ("virtio-blk: Ensure no requests in virtqueues before deleting vqs.") replaces queue quiesce with queue freeze in virtio-blk's PM callbacks. And the motivation is to drain inflight IOs before suspending. block layer's queue freeze looks very handy, but it is also easy to cause deadlock, such as, any attempt to call into bio_queue_enter() may run into deadlock if the queue is frozen in current context. There are all kinds of ->suspend() called in suspend context, so keeping queue frozen in the whole suspend context isn't one good idea. And Marek reported lockdep warning[1] caused by virtio-blk's freeze queue in virtblk_freeze(). [1] https://lore.kernel.org/linux-block/ca16370e-d646-4eee-b9cc-87277c89c43c@samsung.com/ Given the motivation is to drain in-flight IOs, it can be done by calling freeze & unfreeze, meantime restore to previous behavior by keeping queue quiesced during suspend.
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/12c0ddd6c551c1e438b087f874b4f1223a75f7ea URL:https://git.kernel.org/stable/c/12c0ddd6c551c1e438b087f874b4f1223a75f7ea MISC:https://git.kernel.org/stable/c/6dea8e3de59928974bf157dd0499d3958d744ae4 URL:https://git.kernel.org/stable/c/6dea8e3de59928974bf157dd0499d3958d744ae4 MISC:https://git.kernel.org/stable/c/7678abee0867e6b7fb89aa40f6e9f575f755fb37 URL:https://git.kernel.org/stable/c/7678abee0867e6b7fb89aa40f6e9f575f755fb37 MISC:https://git.kernel.org/stable/c/92d5139b91147ab372a17daf5dc27a5b9278e516 URL:https://git.kernel.org/stable/c/92d5139b91147ab372a17daf5dc27a5b9278e516 MISC:https://git.kernel.org/stable/c/9ca428c6397abaa8c38f5c69133a2299e1efbbf2 URL:https://git.kernel.org/stable/c/9ca428c6397abaa8c38f5c69133a2299e1efbbf2 MISC:https://git.kernel.org/stable/c/9e323f856cf4963120e0e3892a84ef8bd764a0e4 URL:https://git.kernel.org/stable/c/9e323f856cf4963120e0e3892a84ef8bd764a0e4 MISC:https://git.kernel.org/stable/c/d738f3215bb4f88911ff4579780a44960c8e0ca5 URL:https://git.kernel.org/stable/c/d738f3215bb4f88911ff4579780a44960c8e0ca5
Assigning CNA
kernel.org
Date Record Created
20250119	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 (20250119)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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