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CVE-2025-38108 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: net_sched: red: fix a race in __red_change() Gerrard Tai reported a race condition in RED, 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.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/110a47efcf23438ff8d31dbd9c854fae2a48bf98 kernel.org
https://git.kernel.org/stable/c/2790c4ec481be45a80948d059cd7c9a06bc37493 kernel.org
https://git.kernel.org/stable/c/2a71924ca4af59ffc00f0444732b6cd54b153d0e kernel.org
https://git.kernel.org/stable/c/444ad445df5496a785705019268a8a84b84484bb kernel.org
https://git.kernel.org/stable/c/4b755305b2b0618e857fdadb499365b5f2e478d1 kernel.org
https://git.kernel.org/stable/c/85a3e0ede38450ea3053b8c45d28cf55208409b8 kernel.org
https://git.kernel.org/stable/c/a1bf6a4e9264a685b0e642994031f9c5aad72414 kernel.org
https://git.kernel.org/stable/c/f569984417a4e12c67366e69bdcb752970de921d kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-38108
NVD Published Date:
07/03/2025
NVD Last Modified:
07/03/2025
Source:
kernel.org