CVE - CVE-2022-49377

CVE-ID
CVE-2022-49377	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: blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx blk_mq_run_hw_queues() could be run when there isn't queued request and after queue is cleaned up, at that time tagset is freed, because tagset lifetime is covered by driver, and often freed after blk_cleanup_queue() returns. So don't touch ->tagset for figuring out current default hctx by the mapping built in request queue, so use-after-free on tagset can be avoided. Meantime this way should be fast than retrieving mapping from tagset.
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/460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff URL:https://git.kernel.org/stable/c/460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff MISC:https://git.kernel.org/stable/c/5d05426e2d5fd7df8afc866b78c36b37b00188b7 URL:https://git.kernel.org/stable/c/5d05426e2d5fd7df8afc866b78c36b37b00188b7 MISC:https://git.kernel.org/stable/c/70fdd922c7bf8949f8df109cf2635dff64c90392 URL:https://git.kernel.org/stable/c/70fdd922c7bf8949f8df109cf2635dff64c90392 MISC:https://git.kernel.org/stable/c/b140bac470b4f707cda59c7266214246238661df URL:https://git.kernel.org/stable/c/b140bac470b4f707cda59c7266214246238661df
Assigning CNA
kernel.org
Date Record Created
20250226	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 (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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