CVE-2025-37798

EUVD-2025-13244
In the Linux kernel, the following vulnerability has been resolved:

codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog()

After making all ->qlen_notify() callbacks idempotent, now it is safe to
remove the check of qlen!=0 from both fq_codel_dequeue() and
codel_qdisc_dequeue().
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 7%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
3.5 ≤
𝑥
< 5.4.297
linuxlinux_kernel
5.5 ≤
𝑥
< 5.10.241
linuxlinux_kernel
5.11 ≤
𝑥
< 5.15.190
linuxlinux_kernel
5.16 ≤
𝑥
< 6.1.135
linuxlinux_kernel
6.2 ≤
𝑥
< 6.6.88
linuxlinux_kernel
6.7 ≤
𝑥
< 6.12.24
linuxlinux_kernel
6.13 ≤
𝑥
< 6.13.12
linuxlinux_kernel
6.14 ≤
𝑥
< 6.14.3
linuxlinux_kernel
6.15:rc1
debiandebian_linux
11.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.176-1
fixed
bookworm (security)
6.1.177-1
fixed
bullseye
vulnerable
bullseye (security)
5.10.259-1
fixed
forky
7.1.3-1
fixed
sid
7.1.3-1
fixed
trixie
6.12.94-1
fixed
trixie (security)
6.12.95-1
fixed
linux-6.1
bullseye (security)
6.1.176-1~deb11u1
fixed
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
cluster-md-kmp-default
suse enterprise server 12 SP5
4.12.14-122.269.1
fixed
suse enterprise server 15 SP5
5.14.21-150500.55.121.2
fixed
dlm-kmp-default
suse enterprise server 12 SP5
4.12.14-122.269.1
fixed
suse enterprise server 15 SP5
5.14.21-150500.55.121.2
fixed
gfs2-kmp-default
suse enterprise server 12 SP5
4.12.14-122.269.1
fixed
suse enterprise server 15 SP5
5.14.21-150500.55.121.2
fixed
kernel-64kb
suse enterprise desktop 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.11.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.11.1
fixed
suse enterprise server 15 SP3
5.3.18-150300.59.215.1
fixed
suse enterprise server 15 SP4
5.14.21-150400.24.173.1
fixed
suse enterprise server 15 SP5
5.14.21-150500.55.121.2
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.11.1
fixed
kernel-azure
suse enterprise sap 15 SP6
6.4.0-150600.8.48.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.20.11.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.8.48.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.20.11.1
fixed
kernel-default
suse enterprise desktop 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.11.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.11.1
fixed
suse enterprise server 12 SP5
4.12.14-122.269.1
fixed
suse enterprise server 15 SP2
5.3.18-150200.24.236.1
fixed
suse enterprise server 15 SP3
5.3.18-150300.59.215.1
fixed
suse enterprise server 15 SP4
5.14.21-150400.24.173.1
fixed
suse enterprise server 15 SP5
5.14.21-150500.55.121.2
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.11.1
fixed
kernel-default-base
suse enterprise desktop 15 SP6
6.4.0-150600.23.65.1.150600.12.28.4
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.11.1.150700.17.9.4
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.65.1.150600.12.28.4
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.11.1.150700.17.9.4
fixed
suse enterprise server 12 SP5
4.12.14-122.269.1
fixed
suse enterprise server 15 SP2
5.3.18-150200.24.236.1.150200.9.128.1
fixed
suse enterprise server 15 SP3
5.3.18-150300.59.215.1.150300.18.128.1
fixed
suse enterprise server 15 SP4
5.14.21-150400.24.173.1.150400.24.88.1
fixed
suse enterprise server 15 SP5
5.14.21-150500.55.121.2.150500.6.57.2
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.65.1.150600.12.28.4
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.11.1.150700.17.9.4
fixed
kernel-default-man
suse enterprise server 12 SP5
4.12.14-122.269.1
fixed
kernel-obs-build
suse enterprise desktop 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.11.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.11.1
fixed
suse enterprise server 15 SP2
5.3.18-150200.24.236.1
fixed
suse enterprise server 15 SP3
5.3.18-150300.59.215.1
fixed
suse enterprise server 15 SP4
5.14.21-150400.24.173.1
fixed
suse enterprise server 15 SP5
5.14.21-150500.55.121.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.11.1
fixed
kernel-preempt
suse enterprise server 15 SP2
5.3.18-150200.24.236.1
fixed
suse enterprise server 15 SP3
5.3.18-150300.59.215.1
fixed
kernel-source
suse enterprise desktop 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.11.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.11.1
fixed
suse enterprise server 12 SP5
4.12.14-122.269.1
fixed
suse enterprise server 15 SP2
5.3.18-150200.24.236.1
fixed
suse enterprise server 15 SP3
5.3.18-150300.59.215.1
fixed
suse enterprise server 15 SP4
5.14.21-150400.24.173.1
fixed
suse enterprise server 15 SP5
5.14.21-150500.55.121.2
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.11.1
fixed
kernel-source-azure
suse enterprise sap 15 SP6
6.4.0-150600.8.48.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.20.11.1
fixed
suse enterprise server 15 SP6
6.4.0-150600.8.48.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.20.11.1
fixed
kernel-zfcpdump
suse enterprise desktop 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise desktop 15 SP7
6.4.0-150700.53.11.1
fixed
suse enterprise sap 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise sap 15 SP7
6.4.0-150700.53.11.1
fixed
suse enterprise server 15 SP3
5.3.18-150300.59.215.1
fixed
suse enterprise server 15 SP4
5.14.21-150400.24.173.1
fixed
suse enterprise server 15 SP5
5.14.21-150500.55.121.2
fixed
suse enterprise server 15 SP6
6.4.0-150600.23.65.1
fixed
suse enterprise server 15 SP7
6.4.0-150700.53.11.1
fixed
ocfs2-kmp-default
suse enterprise server 12 SP5
4.12.14-122.269.1
fixed
suse enterprise server 15 SP5
5.14.21-150500.55.121.2
fixed
reiserfs-kmp-default
suse enterprise server 15 SP2
5.3.18-150200.24.236.1
fixed
suse enterprise server 15 SP3
5.3.18-150300.59.215.1
fixed
suse enterprise server 15 SP4
5.14.21-150400.24.173.1
fixed
suse enterprise server 15 SP5
5.14.21-150500.55.121.2
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
bpftool
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
bpftool-debuginfo
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-debuginfo
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-debuginfo-common-aarch64
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-debuginfo-common-x86_64
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-devel
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-headers
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-libbpf
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-libbpf-debuginfo
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-libbpf-devel
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-libbpf-static
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-livepatch-4.14.355-280.664
Amazon Linux 2
0:1.0-0.amzn2
fixed
kernel-livepatch-6.1.140-154.222
Amazon Linux 2023
0:1.0-0.amzn2023
fixed
kernel-livepatch-6.12.25-32.101
Amazon Linux 2023
0:1.0-0.amzn2023
fixed
kernel-modules-extra
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-modules-extra-common
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-tools
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-tools-debuginfo
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel-tools-devel
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
kernel6.12
Amazon Linux 2023
0:6.12.25-32.101.amzn2023
fixed
kernel6.12-debuginfo
Amazon Linux 2023
0:6.12.25-32.101.amzn2023
fixed
kernel6.12-debuginfo-common-aarch64
Amazon Linux 2023
0:6.12.25-32.101.amzn2023
fixed
kernel6.12-debuginfo-common-x86_64
Amazon Linux 2023
0:6.12.25-32.101.amzn2023
fixed
kernel6.12-modules-extra
Amazon Linux 2023
0:6.12.25-32.101.amzn2023
fixed
perf
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
perf-debuginfo
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
perf6.12
Amazon Linux 2023
0:6.12.25-32.101.amzn2023
fixed
perf6.12-debuginfo
Amazon Linux 2023
0:6.12.25-32.101.amzn2023
fixed
python-perf
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
python-perf-debuginfo
Amazon Linux 2
0:4.14.355-280.664.amzn2
fixed
python3-perf
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
python3-perf-debuginfo
Amazon Linux 2023
0:6.1.140-154.222.amzn2023
fixed
python3-perf6.12
Amazon Linux 2023
0:6.12.25-32.101.amzn2023
fixed
python3-perf6.12-debuginfo
Amazon Linux 2023
0:6.12.25-32.101.amzn2023
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
kernel
Azure Linux 3.0
0:6.6.92.2-1.azl3
fixed
CBL-Mariner 2.0
0:5.15.200.1-1.cm2
fixed
References
https://git.kernel.org/stable/c/2f9761a94bae33d26e6a81b31b36e7d776d93dc1
https://git.kernel.org/stable/c/342debc12183b51773b3345ba267e9263bdfaaef
https://git.kernel.org/stable/c/4d55144b12e742404bb3f8fee6038bafbf45619d
https://git.kernel.org/stable/c/7a742a9506849d1c1aa71e36c89855ceddc7d58e
https://git.kernel.org/stable/c/829c49b6b2ff45b043739168fd1245e4e1a91a30
https://git.kernel.org/stable/c/a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31
https://git.kernel.org/stable/c/cc71a757da78dd4aa1b4a9b19cb011833730ccf2
https://git.kernel.org/stable/c/e73c838c80dccb9e4f19becc11d9f3cb4a27d483
https://git.kernel.org/stable/c/eda741fe155ddf5ecd2dd3bfbd4fc3c0c7dbb450
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html