CVE - CVE-2025-38083

CVE-ID
CVE-2025-38083	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_sched: prio: fix a race in prio_tune() Gerrard Tai reported a race condition in PRIO, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root \| \| [5]: lock root \| [6]: rehash \| [7]: qdisc_tree_reduce_backlog() \| [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.
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/20f68e6a9e41693cb0e55e5b9ebbcb40983a4b8f URL:https://git.kernel.org/stable/c/20f68e6a9e41693cb0e55e5b9ebbcb40983a4b8f MISC:https://git.kernel.org/stable/c/3aaa7c01cf19d9b9bb64b88b65c3a6fd05da2eb4 URL:https://git.kernel.org/stable/c/3aaa7c01cf19d9b9bb64b88b65c3a6fd05da2eb4 MISC:https://git.kernel.org/stable/c/4483d8b9127591c60c4eb789d6cab953bc4522a9 URL:https://git.kernel.org/stable/c/4483d8b9127591c60c4eb789d6cab953bc4522a9 MISC:https://git.kernel.org/stable/c/46c15c9d0f65c9ba857d63f53264f4b17e8a715f URL:https://git.kernel.org/stable/c/46c15c9d0f65c9ba857d63f53264f4b17e8a715f MISC:https://git.kernel.org/stable/c/53d11560e957d53ee87a0653d258038ce12361b7 URL:https://git.kernel.org/stable/c/53d11560e957d53ee87a0653d258038ce12361b7 MISC:https://git.kernel.org/stable/c/93f9eeb678d4c9c1abf720b3615fa8299a490845 URL:https://git.kernel.org/stable/c/93f9eeb678d4c9c1abf720b3615fa8299a490845 MISC:https://git.kernel.org/stable/c/d35acc1be3480505b5931f17e4ea9b7617fea4d3 URL:https://git.kernel.org/stable/c/d35acc1be3480505b5931f17e4ea9b7617fea4d3 MISC:https://git.kernel.org/stable/c/e3f6745006dc9423d2b065b90f191cfa11b1b584 URL:https://git.kernel.org/stable/c/e3f6745006dc9423d2b065b90f191cfa11b1b584
Assigning CNA
kernel.org
Date Record Created
20250416	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 (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
This is an record on the CVE List, which provides common identifiers for publicly known cybersecurity vulnerabilities.
Search CVE Using Keywords: You can also search by reference using the CVE Reference Maps.
For More Information: CVE Request Web Form (select "Other" from dropdown)