CVE-2025-38637

EUVD-2025-11821
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 1%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
4.19 ≤
𝑥
< 5.4.292
linuxlinux_kernel
5.5 ≤
𝑥
< 5.10.236
linuxlinux_kernel
5.11 ≤
𝑥
< 5.15.180
linuxlinux_kernel
5.16 ≤
𝑥
< 6.1.134
linuxlinux_kernel
6.2 ≤
𝑥
< 6.6.87
linuxlinux_kernel
6.7 ≤
𝑥
< 6.12.23
linuxlinux_kernel
6.13 ≤
𝑥
< 6.13.11
linuxlinux_kernel
6.14 ≤
𝑥
< 6.14.2
debiandebian_linux
11.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.170-3
fixed
bookworm (security)
6.1.174-1
fixed
bullseye
vulnerable
bullseye (security)
5.10.257-1
fixed
forky
7.0.10-1
fixed
sid
7.0.10-1
fixed
trixie
6.12.86-1
fixed
trixie (security)
6.12.90-2
fixed
linux-6.1
bullseye (security)
6.1.174-1~deb11u1
fixed
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
cluster-md-kmp-default
suse enterprise server 12 SP5
4.12.14-122.261.1
fixed
dlm-kmp-default
suse enterprise server 12 SP5
4.12.14-122.261.1
fixed
gfs2-kmp-default
suse enterprise server 12 SP5
4.12.14-122.261.1
fixed
kernel-64kb
suse enterprise desktop 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.3.1
fixed
kernel-azure
suse enterprise sap 15 SP6
6.4.0-150600.8.40.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.20.3.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.8.40.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.20.3.1
fixed
kernel-default
suse enterprise desktop 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise server 12 SP5
4.12.14-122.261.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.3.1
fixed
kernel-default-base
suse enterprise desktop 15 SP6
6.4.0-150600.23.53.1.150600.12.24.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.3.1.150700.17.2.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.53.1.150600.12.24.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.3.1.150700.17.2.1
fixed
suse enterprise server 12 SP5
4.12.14-122.261.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.53.1.150600.12.24.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.3.1.150700.17.2.1
fixed
kernel-default-man
suse enterprise server 12 SP5
4.12.14-122.261.1
fixed
kernel-docs
suse enterprise desktop 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.3.1
fixed
kernel-macros
suse enterprise desktop 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise server 12 SP5
4.12.14-122.261.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.3.1
fixed
kernel-obs-build
suse enterprise desktop 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.3.1
fixed
kernel-source
suse enterprise desktop 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise server 12 SP5
4.12.14-122.261.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.3.1
fixed
kernel-source-azure
suse enterprise sap 15 SP6
6.4.0-150600.8.40.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.20.3.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.8.40.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.20.3.1
fixed
kernel-syms
suse enterprise desktop 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise server 12 SP5
4.12.14-122.261.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.3.1
fixed
kernel-syms-azure
suse enterprise sap 15 SP6
6.4.0-150600.8.40.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.20.3.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.8.40.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.20.3.1
fixed
kernel-zfcpdump
suse enterprise desktop 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.3.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.53.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.3.1
fixed
ocfs2-kmp-default
suse enterprise server 12 SP5
4.12.14-122.261.1
fixed