CVE - CVE-2024-58042

CVE-ID
CVE-2024-58042	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: rhashtable: Fix potential deadlock by moving schedule_work outside lock Move the hash table growth check and work scheduling outside the rht lock to prevent a possible circular locking dependency. The original implementation could trigger a lockdep warning due to a potential deadlock scenario involving nested locks between rhashtable bucket, rq lock, and dsq lock. By relocating the growth check and work scheduling after releasing the rth lock, we break this potential deadlock chain. This change expands the flexibility of rhashtable by removing restrictive locking that previously limited its use in scheduler and workqueue contexts. Import to say that this calls rht_grow_above_75(), which reads from struct rhashtable without holding the lock, if this is a problem, we can move the check to the lock, and schedule the workqueue after the lock. Modified so that atomic_inc is also moved outside of the bucket lock along with the growth above 75% check.
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/ced8ce3c83a7150c5f5d371a8c332d7bc7f9b66d URL:https://git.kernel.org/stable/c/ced8ce3c83a7150c5f5d371a8c332d7bc7f9b66d MISC:https://git.kernel.org/stable/c/e1d3422c95f003eba241c176adfe593c33e8a8f6 URL:https://git.kernel.org/stable/c/e1d3422c95f003eba241c176adfe593c33e8a8f6 MISC:https://git.kernel.org/stable/c/eb2e58484b838fb4e777ee9721bb9e20e6ca971d URL:https://git.kernel.org/stable/c/eb2e58484b838fb4e777ee9721bb9e20e6ca971d
Assigning CNA
kernel.org
Date Record Created
20250227	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 (20250227)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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