Use-after-free in Linux kernel - CVE-2022-48742

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Main Vulnerability Database Vulnerabilities #VU92897

Use-after-free in Linux kernel - CVE-2022-48742

Published: June 20, 2024 / Updated: May 13, 2025


Vulnerability identifier: #VU92897
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-48742
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the rtnl_newlink() function in net/core/rtnetlink.c. A local user can escalate privileges on the system.


Affected software

Linux kernel
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise High Availability Extension 12
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Live Patching
openSUSE Leap
kgraft-patch-4_12_14-122_244-default
kernel-livepatch-SLE15-SP5_Update_22-debugsource
kernel-livepatch-5_14_21-150500_55_91-default-debuginfo
kernel-livepatch-5_14_21-150500_55_91-default
cluster-md-kmp-default
cluster-md-kmp-default-debuginfo
ocfs2-kmp-default
dlm-kmp-default-debuginfo
dlm-kmp-default
gfs2-kmp-default
kernel-default-kgraft-devel
gfs2-kmp-default-debuginfo
kernel-default-base
ocfs2-kmp-default-debuginfo
kernel-syms
kernel-default-devel-debuginfo
kernel-default-man
kernel-source
kernel-devel
kernel-macros
kernel-default-devel
kernel-default-base-debuginfo
kernel-default-kgraft
kernel-default-debugsource
kernel-default-debuginfo
kernel-default
kernel-rt-livepatch-devel
kernel-rt_debug
kernel-rt
cluster-md-kmp-rt-debuginfo
kernel-rt_debug-vdso-debuginfo
kernel-rt-devel-debuginfo
kernel-rt-vdso-debuginfo
kernel-rt-devel
kernel-rt-debuginfo
dlm-kmp-rt-debuginfo
kselftests-kmp-rt-debuginfo
kernel-devel-rt
kernel-source-rt
ocfs2-kmp-rt
kernel-rt_debug-vdso
gfs2-kmp-rt-debuginfo
kernel-rt_debug-debuginfo
kernel-rt-livepatch
kernel-rt-extra
kernel-rt-optional
kernel-rt_debug-devel
cluster-md-kmp-rt
kernel-rt-debugsource
kernel-syms-rt
ocfs2-kmp-rt-debuginfo
dlm-kmp-rt
kernel-rt-extra-debuginfo
kernel-rt_debug-devel-debuginfo
reiserfs-kmp-rt
kernel-rt_debug-debugsource
reiserfs-kmp-rt-debuginfo
kselftests-kmp-rt
gfs2-kmp-rt
kernel-rt-optional-debuginfo
kernel-rt-vdso
kernel-64kb
gfs2-kmp-64kb
ocfs2-kmp-64kb-debuginfo
reiserfs-kmp-64kb
dtb-amd
gfs2-kmp-64kb-debuginfo
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-zfcpdump
kernel-docs
kernel-64kb-devel-debuginfo
kernel-64kb-devel
kernel-64kb-debugsource
kernel-64kb-debuginfo
kernel-obs-build-debugsource
reiserfs-kmp-default
reiserfs-kmp-default-debuginfo
kernel-obs-build
kselftests-kmp-default
kernel-default-livepatch
kernel-default-optional-debuginfo
kernel-obs-qa
kernel-default-extra
kselftests-kmp-default-debuginfo
dtb-renesas
kernel-default-extra-debuginfo
kernel-kvmsmall-vdso
kernel-source-vanilla
kernel-docs-html
kernel-debug
kernel-debug-debuginfo
kernel-debug-devel-debuginfo
kernel-debug-debugsource
kernel-debug-devel
kernel-default-vdso-debuginfo
kernel-default-vdso
kernel-debug-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-debug-vdso-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-debuginfo
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-devel
kernel-default-optional
dtb-cavium
dtb-sprd
dtb-xilinx
dtb-exynos
cluster-md-kmp-64kb
dlm-kmp-64kb
kernel-64kb-extra-debuginfo
dlm-kmp-64kb-debuginfo
reiserfs-kmp-64kb-debuginfo
dtb-apm
kernel-64kb-optional-debuginfo
dtb-freescale
dtb-altera
dtb-amazon
dtb-hisilicon
dtb-broadcom
kselftests-kmp-64kb
cluster-md-kmp-64kb-debuginfo
dtb-mediatek
dtb-socionext
kernel-default-livepatch-devel
kernel-kvmsmall
dtb-aarch64
dtb-nvidia
dtb-apple
dtb-amlogic
ocfs2-kmp-64kb
dtb-allwinner
kselftests-kmp-64kb-debuginfo
kernel-64kb-extra
kernel-64kb-optional
dtb-arm
dtb-qcom
dtb-rockchip
dtb-marvell
dtb-lg
kernel-default-base-rebuild

How to mitigate CVE-2022-48742

Install update from vendor's website.

Linux kernel - addressed in versions 4.9.300, 4.14.265, 4.19.228, 5.4.177, 5.10.97, 5.15.20, 5.16.6, 5.17
kgraft-patch-4_12_14-122_244-default - update to 1-8.5.1
kernel-livepatch-SLE15-SP5_Update_22-debugsource - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_91-default-debuginfo - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_91-default - update to 1-150500.11.3.1
cluster-md-kmp-default - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
ocfs2-kmp-default - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
dlm-kmp-default - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
gfs2-kmp-default - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
kernel-default-kgraft-devel - update to 4.12.14-122.244.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
kernel-default-base - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1.150500.6.41.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
kernel-syms - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
kernel-default-man - update to 4.12.14-122.244.1
kernel-source - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
kernel-devel - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
kernel-macros - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
kernel-default-devel - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
kernel-default-base-debuginfo - update to 4.12.14-122.244.1
kernel-default-kgraft - update to 4.12.14-122.244.1
kernel-default-debugsource - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
kernel-default-debuginfo - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
kernel-default - addressed in versions 4.12.14-122.244.1, 5.14.21-150500.55.91.1
kernel-rt-livepatch-devel - update to 5.14.21-150500.13.82.1
kernel-rt_debug - update to 5.14.21-150500.13.82.1
kernel-rt - update to 5.14.21-150500.13.82.1
cluster-md-kmp-rt-debuginfo - update to 5.14.21-150500.13.82.1
kernel-rt_debug-vdso-debuginfo - update to 5.14.21-150500.13.82.1
kernel-rt-devel-debuginfo - update to 5.14.21-150500.13.82.1
kernel-rt-vdso-debuginfo - update to 5.14.21-150500.13.82.1
kernel-rt-devel - update to 5.14.21-150500.13.82.1
kernel-rt-debuginfo - update to 5.14.21-150500.13.82.1
dlm-kmp-rt-debuginfo - update to 5.14.21-150500.13.82.1
kselftests-kmp-rt-debuginfo - update to 5.14.21-150500.13.82.1
kernel-devel-rt - update to 5.14.21-150500.13.82.1
kernel-source-rt - update to 5.14.21-150500.13.82.1
ocfs2-kmp-rt - update to 5.14.21-150500.13.82.1
kernel-rt_debug-vdso - update to 5.14.21-150500.13.82.1
gfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.82.1
kernel-rt_debug-debuginfo - update to 5.14.21-150500.13.82.1
kernel-rt-livepatch - update to 5.14.21-150500.13.82.1
kernel-rt-extra - update to 5.14.21-150500.13.82.1
kernel-rt-optional - update to 5.14.21-150500.13.82.1
kernel-rt_debug-devel - update to 5.14.21-150500.13.82.1
cluster-md-kmp-rt - update to 5.14.21-150500.13.82.1
kernel-rt-debugsource - update to 5.14.21-150500.13.82.1
kernel-syms-rt - update to 5.14.21-150500.13.82.1
ocfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.82.1
dlm-kmp-rt - update to 5.14.21-150500.13.82.1
kernel-rt-extra-debuginfo - update to 5.14.21-150500.13.82.1
kernel-rt_debug-devel-debuginfo - update to 5.14.21-150500.13.82.1
reiserfs-kmp-rt - update to 5.14.21-150500.13.82.1
kernel-rt_debug-debugsource - update to 5.14.21-150500.13.82.1
reiserfs-kmp-rt-debuginfo - update to 5.14.21-150500.13.82.1
kselftests-kmp-rt - update to 5.14.21-150500.13.82.1
gfs2-kmp-rt - update to 5.14.21-150500.13.82.1
kernel-rt-optional-debuginfo - update to 5.14.21-150500.13.82.1
kernel-rt-vdso - update to 5.14.21-150500.13.82.1
kernel-64kb - update to 5.14.21-150500.55.91.1
gfs2-kmp-64kb - update to 5.14.21-150500.55.91.1
ocfs2-kmp-64kb-debuginfo - update to 5.14.21-150500.55.91.1
reiserfs-kmp-64kb - update to 5.14.21-150500.55.91.1
dtb-amd - update to 5.14.21-150500.55.91.1
gfs2-kmp-64kb-debuginfo - update to 5.14.21-150500.55.91.1
kernel-zfcpdump-debuginfo - update to 5.14.21-150500.55.91.1
kernel-zfcpdump-debugsource - update to 5.14.21-150500.55.91.1
kernel-zfcpdump - update to 5.14.21-150500.55.91.1
kernel-docs - update to 5.14.21-150500.55.91.1
kernel-64kb-devel-debuginfo - update to 5.14.21-150500.55.91.1
kernel-64kb-devel - update to 5.14.21-150500.55.91.1
kernel-64kb-debugsource - update to 5.14.21-150500.55.91.1
kernel-64kb-debuginfo - update to 5.14.21-150500.55.91.1
kernel-obs-build-debugsource - update to 5.14.21-150500.55.91.1
reiserfs-kmp-default - update to 5.14.21-150500.55.91.1
reiserfs-kmp-default-debuginfo - update to 5.14.21-150500.55.91.1
kernel-obs-build - update to 5.14.21-150500.55.91.1
kselftests-kmp-default - update to 5.14.21-150500.55.91.1
kernel-default-livepatch - update to 5.14.21-150500.55.91.1
kernel-default-optional-debuginfo - update to 5.14.21-150500.55.91.1
kernel-obs-qa - update to 5.14.21-150500.55.91.1
kernel-default-extra - update to 5.14.21-150500.55.91.1
kselftests-kmp-default-debuginfo - update to 5.14.21-150500.55.91.1
dtb-renesas - update to 5.14.21-150500.55.91.1
kernel-default-extra-debuginfo - update to 5.14.21-150500.55.91.1
kernel-kvmsmall-vdso - update to 5.14.21-150500.55.91.1
kernel-source-vanilla - update to 5.14.21-150500.55.91.1
kernel-docs-html - update to 5.14.21-150500.55.91.1
kernel-debug - update to 5.14.21-150500.55.91.1
kernel-debug-debuginfo - update to 5.14.21-150500.55.91.1
kernel-debug-devel-debuginfo - update to 5.14.21-150500.55.91.1
kernel-debug-debugsource - update to 5.14.21-150500.55.91.1
kernel-debug-devel - update to 5.14.21-150500.55.91.1
kernel-default-vdso-debuginfo - update to 5.14.21-150500.55.91.1
kernel-default-vdso - update to 5.14.21-150500.55.91.1
kernel-debug-vdso - update to 5.14.21-150500.55.91.1
kernel-kvmsmall-vdso-debuginfo - update to 5.14.21-150500.55.91.1
kernel-debug-vdso-debuginfo - update to 5.14.21-150500.55.91.1
kernel-kvmsmall-debugsource - update to 5.14.21-150500.55.91.1
kernel-kvmsmall-debuginfo - update to 5.14.21-150500.55.91.1
kernel-kvmsmall-devel-debuginfo - update to 5.14.21-150500.55.91.1
kernel-kvmsmall-devel - update to 5.14.21-150500.55.91.1
kernel-default-optional - update to 5.14.21-150500.55.91.1
dtb-cavium - update to 5.14.21-150500.55.91.1
dtb-sprd - update to 5.14.21-150500.55.91.1
dtb-xilinx - update to 5.14.21-150500.55.91.1
dtb-exynos - update to 5.14.21-150500.55.91.1
cluster-md-kmp-64kb - update to 5.14.21-150500.55.91.1
dlm-kmp-64kb - update to 5.14.21-150500.55.91.1
kernel-64kb-extra-debuginfo - update to 5.14.21-150500.55.91.1
dlm-kmp-64kb-debuginfo - update to 5.14.21-150500.55.91.1
reiserfs-kmp-64kb-debuginfo - update to 5.14.21-150500.55.91.1
dtb-apm - update to 5.14.21-150500.55.91.1
kernel-64kb-optional-debuginfo - update to 5.14.21-150500.55.91.1
dtb-freescale - update to 5.14.21-150500.55.91.1
dtb-altera - update to 5.14.21-150500.55.91.1
dtb-amazon - update to 5.14.21-150500.55.91.1
dtb-hisilicon - update to 5.14.21-150500.55.91.1
dtb-broadcom - update to 5.14.21-150500.55.91.1
kselftests-kmp-64kb - update to 5.14.21-150500.55.91.1
cluster-md-kmp-64kb-debuginfo - update to 5.14.21-150500.55.91.1
dtb-mediatek - update to 5.14.21-150500.55.91.1
dtb-socionext - update to 5.14.21-150500.55.91.1
kernel-default-livepatch-devel - update to 5.14.21-150500.55.91.1
kernel-kvmsmall - update to 5.14.21-150500.55.91.1
dtb-aarch64 - update to 5.14.21-150500.55.91.1
dtb-nvidia - update to 5.14.21-150500.55.91.1
dtb-apple - update to 5.14.21-150500.55.91.1
dtb-amlogic - update to 5.14.21-150500.55.91.1
ocfs2-kmp-64kb - update to 5.14.21-150500.55.91.1
dtb-allwinner - update to 5.14.21-150500.55.91.1
kselftests-kmp-64kb-debuginfo - update to 5.14.21-150500.55.91.1
kernel-64kb-extra - update to 5.14.21-150500.55.91.1
kernel-64kb-optional - update to 5.14.21-150500.55.91.1
dtb-arm - update to 5.14.21-150500.55.91.1
dtb-qcom - update to 5.14.21-150500.55.91.1
dtb-rockchip - update to 5.14.21-150500.55.91.1
dtb-marvell - update to 5.14.21-150500.55.91.1
dtb-lg - update to 5.14.21-150500.55.91.1
kernel-default-base-rebuild - update to 5.14.21-150500.55.91.1.150500.6.41.1

External References

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