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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
aea5f654e6b78a0c976f7a25950155932c77a53f to < 7abc8318ce0712182bf0783dcfdd9a6a8331160eaffectedaea5f654e6b78a0c976f7a25950155932c77a53f to < 1284733bab736e598341f1d3f3b94e2a322864a8affectedaea5f654e6b78a0c976f7a25950155932c77a53f to < 32ee79682315e6d3c99947b3f38b078a09a66919affectedaea5f654e6b78a0c976f7a25950155932c77a53f to < 1dcc144c322a8d526b791135604c0663f1af9d85affectedaea5f654e6b78a0c976f7a25950155932c77a53f to < 864ca690ff135078d374bd565b9872f161c614bcaffectedaea5f654e6b78a0c976f7a25950155932c77a53f to < 2f35b7673a3aa3d09b3eb05811669622ebaa98caaffectedaea5f654e6b78a0c976f7a25950155932c77a53f to < 2286770b07cb5268c03d11274b8efd43dff0d380affectedaea5f654e6b78a0c976f7a25950155932c77a53f to < 034b293bf17c124fec0f0e663f81203b00aa7a50affectedaea5f654e6b78a0c976f7a25950155932c77a53f to < ce8fe975fd99b49c29c42e50f2441ba53112b2e8affected
Linux Linux
Default version status: affected
4.19affected0 to < 4.19unaffected5.4.292 to ≤ 5.4.*unaffected5.10.236 to ≤ 5.10.*unaffected5.15.180 to ≤ 5.15.*unaffected6.1.134 to ≤ 6.1.*unaffected6.6.87 to ≤ 6.6.*unaffected6.12.23 to ≤ 6.12.*unaffected6.13.11 to ≤ 6.13.*unaffected6.14.2 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/7abc8318ce0712182bf0783dcfdd9a6a8331160e ↗
- https://git.kernel.org/stable/c/1284733bab736e598341f1d3f3b94e2a322864a8 ↗
- https://git.kernel.org/stable/c/32ee79682315e6d3c99947b3f38b078a09a66919 ↗
- https://git.kernel.org/stable/c/1dcc144c322a8d526b791135604c0663f1af9d85 ↗
- https://git.kernel.org/stable/c/864ca690ff135078d374bd565b9872f161c614bc ↗
- https://git.kernel.org/stable/c/2f35b7673a3aa3d09b3eb05811669622ebaa98ca ↗
- https://git.kernel.org/stable/c/2286770b07cb5268c03d11274b8efd43dff0d380 ↗
- https://git.kernel.org/stable/c/034b293bf17c124fec0f0e663f81203b00aa7a50 ↗
- https://git.kernel.org/stable/c/ce8fe975fd99b49c29c42e50f2441ba53112b2e8 ↗
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html ↗
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html ↗