Detections
Analytics
CVE-2025-38637
medium
Description
In the Linux kernel, the following vulnerability has been resolved: net_sched: skbprio: Remove overly strict queue assertions In the current implementation, skbprio enqueue/dequeue contains an assertion that fails under certain conditions when SKBPRIO is used as a child qdisc under TBF with specific parameters. The failure occurs because TBF sometimes peeks at packets in the child qdisc without actually dequeuing them when tokens are unavailable. This peek operation creates a discrepancy between the parent and child qdisc queue length counters. When TBF later receives a high-priority packet, SKBPRIO's queue length may show a different value than what's reflected in its internal priority queue tracking, triggering the assertion. The fix removes this overly strict assertions in SKBPRIO, they are not necessary at all.
References
https://git.kernel.org/stable/c/ce8fe975fd99b49c29c42e50f2441ba53112b2e8
https://git.kernel.org/stable/c/864ca690ff135078d374bd565b9872f161c614bc
https://git.kernel.org/stable/c/7abc8318ce0712182bf0783dcfdd9a6a8331160e
https://git.kernel.org/stable/c/32ee79682315e6d3c99947b3f38b078a09a66919
https://git.kernel.org/stable/c/2f35b7673a3aa3d09b3eb05811669622ebaa98ca
https://git.kernel.org/stable/c/2286770b07cb5268c03d11274b8efd43dff0d380
https://git.kernel.org/stable/c/1dcc144c322a8d526b791135604c0663f1af9d85
https://git.kernel.org/stable/c/1284733bab736e598341f1d3f3b94e2a322864a8
https://git.kernel.org/stable/c/034b293bf17c124fec0f0e663f81203b00aa7a50