Resource management error in Linux kernel - CVE-2025-21868

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Main Vulnerability Database Vulnerabilities #VU106130

Resource management error in Linux kernel - CVE-2025-21868

Published: March 27, 2025 / Updated: May 11, 2025


Vulnerability identifier: #VU106130
CSH Severity: Low
CVSS v4 BT: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2025-21868
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to resource management error within the SKB_HEAD_ALIGN(), __netdev_alloc_skb() and napi_alloc_skb() functions in net/core/skbuff.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Micro
SUSE Linux Micro Extras
Legacy Module
SUSE Linux Enterprise Live Patching
Development Tools Module
Basesystem Module
Confidential Computing Module
openSUSE Leap
Ubuntu
openEuler
kernel-livepatch-6_4_0-150600_23_60-default-debuginfo
kernel-livepatch-SLE15-SP6_Update_13-debugsource
kernel-livepatch-6_4_0-150600_23_60-default
kernel-rt-debugsource
kernel-rt-debuginfo
kernel-rt-livepatch
kernel-rt
kernel-devel-rt
kernel-source-rt
kernel-rt-devel
kernel-rt-devel-debuginfo
kernel-coco_debug-debugsource
kernel-syms-coco
kernel-coco
kernel-coco_debug
kernel-coco_debug-devel
kernel-coco-vdso-debuginfo
kernel-source-coco
reiserfs-kmp-coco
kernel-coco-debugsource
reiserfs-kmp-coco-debuginfo
kernel-coco-debuginfo
kernel-coco_debug-devel-debuginfo
kernel-coco_debug-debuginfo
kernel-coco-devel
kernel-devel-coco
kernel-obs-qa
dtb-apm
kernel-obs-build-debugsource
kernel-obs-build
dtb-aarch64
dtb-amd
dtb-arm
dtb-apple
dtb-lg
dtb-altera
dtb-exynos
dtb-amlogic
dtb-sprd
dtb-cavium
dtb-rockchip
dtb-xilinx
dtb-qcom
dtb-amazon
dtb-hisilicon
dtb-socionext
dtb-allwinner
dtb-nvidia
dtb-broadcom
dtb-freescale
dtb-marvell
dtb-mediatek
dtb-renesas
kernel-docs
kernel-docs-html
gfs2-kmp-64kb-debuginfo
ocfs2-kmp-64kb-debuginfo
kernel-syms
kernel-64kb-devel
dlm-kmp-64kb
kernel-64kb-debugsource
kselftests-kmp-64kb-debuginfo
kernel-debug-vdso
cluster-md-kmp-64kb
cluster-md-kmp-64kb-debuginfo
kernel-64kb-extra
kernel-kvmsmall-devel
kernel-kvmsmall-debuginfo
reiserfs-kmp-64kb-debuginfo
kernel-64kb-optional-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel-debuginfo
kernel-debug-vdso-debuginfo
kernel-kvmsmall-vdso
gfs2-kmp-64kb
kselftests-kmp-64kb
kernel-kvmsmall-vdso-debuginfo
kernel-64kb-debuginfo
kernel-source
kernel-devel
kernel-64kb
kernel-64kb-optional
kernel-64kb-devel-debuginfo
kernel-source-vanilla
kernel-debug
kernel-64kb-extra-debuginfo
reiserfs-kmp-64kb
dlm-kmp-64kb-debuginfo
kernel-debug-devel-debuginfo
kernel-debug-devel
ocfs2-kmp-64kb
kernel-debug-debuginfo
kernel-macros
kernel-kvmsmall
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-debug-debugsource
kernel-default-debugsource
kernel-default-vdso
kernel-default-devel
kernel-default
kernel-default-optional-debuginfo
cluster-md-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
kselftests-kmp-default
kernel-default-optional
reiserfs-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default-livepatch
kernel-default-extra
kernel-default-devel-debuginfo
kernel-default-extra-debuginfo
cluster-md-kmp-default
kernel-default-livepatch-devel
kernel-default-debuginfo
ocfs2-kmp-default
gfs2-kmp-default
kselftests-kmp-default-debuginfo
reiserfs-kmp-default
dlm-kmp-default-debuginfo
dlm-kmp-default
kernel-default-vdso-debuginfo
kernel-default-base-rebuild
kernel-default-base
kernel-tools-devel
perf
perf-debuginfo
python3-perf
python3-perf-debuginfo
bpftool
kernel
kernel-tools-debuginfo
kernel-tools
kernel-headers
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
kernel-extra-modules
linux (Ubuntu package)
linux-gke (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-azure (Ubuntu package)
linux-oracle (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-aws (Ubuntu package)
linux-lowlatency (Ubuntu package)

How to mitigate CVE-2025-21868

Install update from vendor's website.

Linux kernel - update to 6.12.17
kernel-livepatch-6_4_0-150600_23_60-default-debuginfo - update to 1-150600.13.6.4
kernel-livepatch-SLE15-SP6_Update_13-debugsource - update to 1-150600.13.6.4
kernel-livepatch-6_4_0-150600_23_60-default - update to 1-150600.13.6.4
kernel-rt-debugsource - update to 6.4.0-33.1
kernel-rt-debuginfo - update to 6.4.0-33.1
kernel-rt-livepatch - update to 6.4.0-33.1
kernel-rt - update to 6.4.0-33.1
kernel-devel-rt - update to 6.4.0-33.1
kernel-source-rt - update to 6.4.0-33.1
kernel-rt-devel - update to 6.4.0-33.1
kernel-rt-devel-debuginfo - update to 6.4.0-33.1
kernel-coco_debug-debugsource - update to 6.4.0-15061.28.coco15sp6.1
kernel-syms-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug-devel - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-vdso-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-source-coco - update to 6.4.0-15061.28.coco15sp6.1
reiserfs-kmp-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-debugsource - update to 6.4.0-15061.28.coco15sp6.1
reiserfs-kmp-coco-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug-devel-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-devel - update to 6.4.0-15061.28.coco15sp6.1
kernel-devel-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-obs-qa - update to 6.4.0-150600.23.60.2
dtb-apm - update to 6.4.0-150600.23.60.3
kernel-obs-build-debugsource - update to 6.4.0-150600.23.60.3
kernel-obs-build - update to 6.4.0-150600.23.60.3
dtb-aarch64 - update to 6.4.0-150600.23.60.3
dtb-amd - update to 6.4.0-150600.23.60.3
dtb-arm - update to 6.4.0-150600.23.60.3
dtb-apple - update to 6.4.0-150600.23.60.3
dtb-lg - update to 6.4.0-150600.23.60.3
dtb-altera - update to 6.4.0-150600.23.60.3
dtb-exynos - update to 6.4.0-150600.23.60.3
dtb-amlogic - update to 6.4.0-150600.23.60.3
dtb-sprd - update to 6.4.0-150600.23.60.3
dtb-cavium - update to 6.4.0-150600.23.60.3
dtb-rockchip - update to 6.4.0-150600.23.60.3
dtb-xilinx - update to 6.4.0-150600.23.60.3
dtb-qcom - update to 6.4.0-150600.23.60.3
dtb-amazon - update to 6.4.0-150600.23.60.3
dtb-hisilicon - update to 6.4.0-150600.23.60.3
dtb-socionext - update to 6.4.0-150600.23.60.3
dtb-allwinner - update to 6.4.0-150600.23.60.3
dtb-nvidia - update to 6.4.0-150600.23.60.3
dtb-broadcom - update to 6.4.0-150600.23.60.3
dtb-freescale - update to 6.4.0-150600.23.60.3
dtb-marvell - update to 6.4.0-150600.23.60.3
dtb-mediatek - update to 6.4.0-150600.23.60.3
dtb-renesas - update to 6.4.0-150600.23.60.3
kernel-docs - update to 6.4.0-150600.23.60.3
kernel-docs-html - update to 6.4.0-150600.23.60.3
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-syms - update to 6.4.0-150600.23.60.4
kernel-64kb-devel - update to 6.4.0-150600.23.60.4
dlm-kmp-64kb - update to 6.4.0-150600.23.60.4
kernel-64kb-debugsource - update to 6.4.0-150600.23.60.4
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-debug-vdso - update to 6.4.0-150600.23.60.4
cluster-md-kmp-64kb - update to 6.4.0-150600.23.60.4
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-extra - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-devel - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-debuginfo - update to 6.4.0-150600.23.60.4
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-debugsource - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-devel-debuginfo - update to 6.4.0-150600.23.60.4
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-vdso - update to 6.4.0-150600.23.60.4
gfs2-kmp-64kb - update to 6.4.0-150600.23.60.4
kselftests-kmp-64kb - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-source - update to 6.4.0-150600.23.60.4
kernel-devel - update to 6.4.0-150600.23.60.4
kernel-64kb - update to 6.4.0-150600.23.60.4
kernel-64kb-optional - update to 6.4.0-150600.23.60.4
kernel-64kb-devel-debuginfo - update to 6.4.0-150600.23.60.4
kernel-source-vanilla - update to 6.4.0-150600.23.60.4
kernel-debug - update to 6.4.0-150600.23.60.4
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.60.4
reiserfs-kmp-64kb - update to 6.4.0-150600.23.60.4
dlm-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.60.4
kernel-debug-devel - update to 6.4.0-150600.23.60.4
ocfs2-kmp-64kb - update to 6.4.0-150600.23.60.4
kernel-debug-debuginfo - update to 6.4.0-150600.23.60.4
kernel-macros - update to 6.4.0-150600.23.60.4
kernel-kvmsmall - update to 6.4.0-150600.23.60.4
kernel-zfcpdump - update to 6.4.0-150600.23.60.4
kernel-zfcpdump-debuginfo - update to 6.4.0-150600.23.60.4
kernel-zfcpdump-debugsource - update to 6.4.0-150600.23.60.4
kernel-debug-debugsource - update to 6.4.0-150600.23.60.4
kernel-default-debugsource - update to 6.4.0-150600.23.60.5
kernel-default-vdso - update to 6.4.0-150600.23.60.5
kernel-default-devel - update to 6.4.0-150600.23.60.5
kernel-default - update to 6.4.0-150600.23.60.5
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.60.5
cluster-md-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
gfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
kselftests-kmp-default - update to 6.4.0-150600.23.60.5
kernel-default-optional - update to 6.4.0-150600.23.60.5
reiserfs-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
ocfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-livepatch - update to 6.4.0-150600.23.60.5
kernel-default-extra - update to 6.4.0-150600.23.60.5
kernel-default-devel-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-extra-debuginfo - update to 6.4.0-150600.23.60.5
cluster-md-kmp-default - update to 6.4.0-150600.23.60.5
kernel-default-livepatch-devel - update to 6.4.0-150600.23.60.5
kernel-default-debuginfo - update to 6.4.0-150600.23.60.5
ocfs2-kmp-default - update to 6.4.0-150600.23.60.5
gfs2-kmp-default - update to 6.4.0-150600.23.60.5
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
reiserfs-kmp-default - update to 6.4.0-150600.23.60.5
dlm-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
dlm-kmp-default - update to 6.4.0-150600.23.60.5
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-base-rebuild - update to 6.4.0-150600.23.60.5.150600.12.26.4
kernel-default-base - update to 6.4.0-150600.23.60.5.150600.12.26.4
kernel-tools-devel - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
perf - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
perf-debuginfo - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
python3-perf - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
python3-perf-debuginfo - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
bpftool - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
kernel - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
kernel-tools-debuginfo - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
kernel-tools - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
kernel-source - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
kernel-headers - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
kernel-devel - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
kernel-debugsource - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
kernel-debuginfo - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
bpftool-debuginfo - addressed in versions 6.6.0-105.0.0.97, 6.6.0-105.0.0.108, 6.6.0-105.0.0.111
kernel-extra-modules - update to 6.6.0-105.0.0.111
linux (Ubuntu package) - addressed in versions 6.8.0-78.78, 6.8.0-78.78.1, 6.8.0-78.78.1~22.04.1, 6.8.0-1035.37, 6.8.1-1030.31, 6.11.0-26.26, 6.11.0-26.26~24.04.1, 6.11.0-1010.10, 6.11.0-1013.13, 6.11.0-1015.15, 6.11.0-1015.15~24.04.1, 6.11.0-1022.22
linux-gke (Ubuntu package) - addressed in versions 6.8.0-78.78~22.04.1, 6.8.0-1032.36, 6.8.0-1035.38, 6.8.0-1035.38.1, 6.8.0-1035.38~22.04.1, 6.8.0-1035.39
linux-aws-6.8 (Ubuntu package) - addressed in versions 6.8.0-1019.21~22.04.1, 6.8.0-1033.33, 6.8.0-1033.33~22.04.1, 6.8.0-1035.37~22.04.1, 6.8.0-1036.38, 6.8.0-1036.38~22.04.1
linux-azure (Ubuntu package) - addressed in versions 6.8.0-1022.23, 6.8.0-1034.39, 6.8.0-1034.39~22.04.1
linux-oracle (Ubuntu package) - update to 6.8.0-1032.33~22.04.1
linux-raspi-realtime (Ubuntu package) - update to 6.8.0-2028.29
linux-aws (Ubuntu package) - update to 6.11.0-1014.15
linux-lowlatency (Ubuntu package) - addressed in versions 6.11.0-1014.15, 6.11.0-1014.15~24.04.1, 6.11.0-1016.17

External References

Related Security Bulletins