NULL pointer dereference in Linux kernel - CVE-2022-49538

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Main Vulnerability Database Vulnerabilities #VU104600

NULL pointer dereference in Linux kernel - CVE-2022-49538

Published: February 26, 2025 / Updated: May 11, 2025


Vulnerability identifier: #VU104600
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-2022-49538
CWE-ID: CWE-476
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 NULL pointer dereference within the snd_jack_dev_disconnect(), snd_jack_dev_register(), snd_jack_new(), EXPORT_SYMBOL() and snd_jack_report() functions in sound/core/jack.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Live Patching
openSUSE Leap
openEuler
kgraft-patch-4_12_14-122_255-default
kernel-livepatch-5_14_21-150500_55_100-default-debuginfo
kernel-livepatch-5_14_21-150500_55_100-default
kernel-livepatch-SLE15-SP5_Update_25-debugsource
kernel-source
kernel-macros
kernel-default
kernel-default-debugsource
kernel-default-debuginfo
cluster-md-kmp-default
kernel-default-devel
dlm-kmp-default
gfs2-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
kernel-default-devel-debuginfo
dlm-kmp-default-debuginfo
kernel-syms
gfs2-kmp-default
kernel-default-base
ocfs2-kmp-default-debuginfo
ocfs2-kmp-default
kernel-default-base-debuginfo
kernel-default-kgraft-devel
kernel-default-kgraft
kernel-default-man
kernel-devel
python3-perf-debuginfo
python3-perf
python2-perf-debuginfo
python2-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel
kernel-source-rt
kernel-rt_debug-devel-debuginfo
cluster-md-kmp-rt
kselftests-kmp-rt
kernel-rt-debugsource
kernel-syms-rt
reiserfs-kmp-rt
kernel-rt-devel
kernel-rt_debug-devel
dlm-kmp-rt
kernel-devel-rt
reiserfs-kmp-rt-debuginfo
kernel-rt-vdso-debuginfo
kernel-rt-extra
gfs2-kmp-rt
kernel-rt-livepatch
kernel-rt-vdso
kernel-rt_debug
kernel-rt
ocfs2-kmp-rt
dlm-kmp-rt-debuginfo
kernel-rt-optional-debuginfo
kernel-rt_debug-debugsource
ocfs2-kmp-rt-debuginfo
kernel-rt-devel-debuginfo
kernel-rt-debuginfo
kernel-rt_debug-vdso
kernel-rt-livepatch-devel
kernel-rt-optional
cluster-md-kmp-rt-debuginfo
gfs2-kmp-rt-debuginfo
kernel-rt_debug-debuginfo
kselftests-kmp-rt-debuginfo
kernel-rt-extra-debuginfo
kernel-rt_debug-vdso-debuginfo
dtb-hisilicon
dtb-marvell
dtb-allwinner
cluster-md-kmp-64kb-debuginfo
dtb-sprd
reiserfs-kmp-64kb
dtb-nvidia
kselftests-kmp-64kb-debuginfo
dtb-broadcom
gfs2-kmp-64kb
dtb-cavium
kernel-64kb-extra
dtb-apple
dtb-amlogic
kernel-64kb-devel
dtb-arm
dtb-socionext
kernel-64kb-debugsource
kernel-docs
kernel-docs-html
kernel-64kb
dtb-exynos
gfs2-kmp-64kb-debuginfo
kernel-64kb-devel-debuginfo
ocfs2-kmp-64kb
dlm-kmp-64kb-debuginfo
dtb-mediatek
dtb-xilinx
kselftests-kmp-64kb
dtb-altera
kernel-debug-devel-debuginfo
reiserfs-kmp-default-debuginfo
kernel-default-optional
kselftests-kmp-default-debuginfo
kernel-default-extra
kernel-obs-qa
kernel-obs-build
kernel-default-extra-debuginfo
reiserfs-kmp-default
kernel-kvmsmall-debuginfo
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-devel
kernel-kvmsmall-debugsource
kernel-default-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-kvmsmall-vdso
kernel-default-vdso-debuginfo
kernel-debug-vdso-debuginfo
kernel-debug-vdso
kernel-debug-debuginfo
kernel-debug-devel
reiserfs-kmp-64kb-debuginfo
dtb-rockchip
dtb-amd
dtb-amazon
cluster-md-kmp-64kb
dtb-qcom
dtb-freescale
dtb-renesas
ocfs2-kmp-64kb-debuginfo
dtb-apm
kernel-64kb-optional
kernel-64kb-optional-debuginfo
kernel-64kb-extra-debuginfo
dtb-lg
dlm-kmp-64kb
kernel-debug
kernel-default-optional-debuginfo
kselftests-kmp-default
kernel-obs-build-debugsource
kernel-default-livepatch
kernel-debug-debugsource
kernel-default-livepatch-devel
kernel-64kb-debuginfo
kernel-source-vanilla
kernel-kvmsmall
kernel-zfcpdump
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
dtb-aarch64
kernel-default-base-rebuild

How to mitigate CVE-2022-49538

Install update from vendor's website.

Linux kernel - update to 5.4.198
kgraft-patch-4_12_14-122_255-default - update to 1-8.5.1
kernel-livepatch-5_14_21-150500_55_100-default-debuginfo - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_100-default - update to 1-150500.11.3.1
kernel-livepatch-SLE15-SP5_Update_25-debugsource - update to 1-150500.11.3.1
kernel-source - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
kernel-macros - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
kernel-default - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
kernel-default-debugsource - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
kernel-default-debuginfo - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
cluster-md-kmp-default - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
kernel-default-devel - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
dlm-kmp-default - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
kernel-syms - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
gfs2-kmp-default - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
kernel-default-base - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1.150500.6.47.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
ocfs2-kmp-default - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
kernel-default-base-debuginfo - update to 4.12.14-122.255.1
kernel-default-kgraft-devel - update to 4.12.14-122.255.1
kernel-default-kgraft - update to 4.12.14-122.255.1
kernel-default-man - update to 4.12.14-122.255.1
kernel-devel - addressed in versions 4.12.14-122.255.1, 5.14.21-150500.55.100.1
kernel-devel - update to 4.19.90-2504.4.0.0325
python3-perf-debuginfo - update to 4.19.90-2504.4.0.0325
python3-perf - update to 4.19.90-2504.4.0.0325
python2-perf-debuginfo - update to 4.19.90-2504.4.0.0325
python2-perf - update to 4.19.90-2504.4.0.0325
perf-debuginfo - update to 4.19.90-2504.4.0.0325
perf - update to 4.19.90-2504.4.0.0325
kernel-tools-devel - update to 4.19.90-2504.4.0.0325
kernel-tools-debuginfo - update to 4.19.90-2504.4.0.0325
kernel-tools - update to 4.19.90-2504.4.0.0325
kernel-source - update to 4.19.90-2504.4.0.0325
kernel-debugsource - update to 4.19.90-2504.4.0.0325
kernel-debuginfo - update to 4.19.90-2504.4.0.0325
bpftool-debuginfo - update to 4.19.90-2504.4.0.0325
bpftool - update to 4.19.90-2504.4.0.0325
kernel - update to 4.19.90-2504.4.0.0325
kernel-source-rt - update to 5.14.21-150500.13.91.1
kernel-rt_debug-devel-debuginfo - update to 5.14.21-150500.13.91.1
cluster-md-kmp-rt - update to 5.14.21-150500.13.91.1
kselftests-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-rt-debugsource - update to 5.14.21-150500.13.91.1
kernel-syms-rt - update to 5.14.21-150500.13.91.1
reiserfs-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-rt-devel - update to 5.14.21-150500.13.91.1
kernel-rt_debug-devel - update to 5.14.21-150500.13.91.1
dlm-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-devel-rt - update to 5.14.21-150500.13.91.1
reiserfs-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-vdso-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-extra - update to 5.14.21-150500.13.91.1
gfs2-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-rt-livepatch - update to 5.14.21-150500.13.91.1
kernel-rt-vdso - update to 5.14.21-150500.13.91.1
kernel-rt_debug - update to 5.14.21-150500.13.91.1
kernel-rt - update to 5.14.21-150500.13.91.1
ocfs2-kmp-rt - update to 5.14.21-150500.13.91.1
dlm-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-optional-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt_debug-debugsource - update to 5.14.21-150500.13.91.1
ocfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-devel-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt_debug-vdso - update to 5.14.21-150500.13.91.1
kernel-rt-livepatch-devel - update to 5.14.21-150500.13.91.1
kernel-rt-optional - update to 5.14.21-150500.13.91.1
cluster-md-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
gfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt_debug-debuginfo - update to 5.14.21-150500.13.91.1
kselftests-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-extra-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt_debug-vdso-debuginfo - update to 5.14.21-150500.13.91.1
dtb-hisilicon - update to 5.14.21-150500.55.100.1
dtb-marvell - update to 5.14.21-150500.55.100.1
dtb-allwinner - update to 5.14.21-150500.55.100.1
cluster-md-kmp-64kb-debuginfo - update to 5.14.21-150500.55.100.1
dtb-sprd - update to 5.14.21-150500.55.100.1
reiserfs-kmp-64kb - update to 5.14.21-150500.55.100.1
dtb-nvidia - update to 5.14.21-150500.55.100.1
kselftests-kmp-64kb-debuginfo - update to 5.14.21-150500.55.100.1
dtb-broadcom - update to 5.14.21-150500.55.100.1
gfs2-kmp-64kb - update to 5.14.21-150500.55.100.1
dtb-cavium - update to 5.14.21-150500.55.100.1
kernel-64kb-extra - update to 5.14.21-150500.55.100.1
dtb-apple - update to 5.14.21-150500.55.100.1
dtb-amlogic - update to 5.14.21-150500.55.100.1
kernel-64kb-devel - update to 5.14.21-150500.55.100.1
dtb-arm - update to 5.14.21-150500.55.100.1
dtb-socionext - update to 5.14.21-150500.55.100.1
kernel-64kb-debugsource - update to 5.14.21-150500.55.100.1
kernel-docs - update to 5.14.21-150500.55.100.1
kernel-docs-html - update to 5.14.21-150500.55.100.1
kernel-64kb - update to 5.14.21-150500.55.100.1
dtb-exynos - update to 5.14.21-150500.55.100.1
gfs2-kmp-64kb-debuginfo - update to 5.14.21-150500.55.100.1
kernel-64kb-devel-debuginfo - update to 5.14.21-150500.55.100.1
ocfs2-kmp-64kb - update to 5.14.21-150500.55.100.1
dlm-kmp-64kb-debuginfo - update to 5.14.21-150500.55.100.1
dtb-mediatek - update to 5.14.21-150500.55.100.1
dtb-xilinx - update to 5.14.21-150500.55.100.1
kselftests-kmp-64kb - update to 5.14.21-150500.55.100.1
dtb-altera - update to 5.14.21-150500.55.100.1
kernel-debug-devel-debuginfo - update to 5.14.21-150500.55.100.1
reiserfs-kmp-default-debuginfo - update to 5.14.21-150500.55.100.1
kernel-default-optional - update to 5.14.21-150500.55.100.1
kselftests-kmp-default-debuginfo - update to 5.14.21-150500.55.100.1
kernel-default-extra - update to 5.14.21-150500.55.100.1
kernel-obs-qa - update to 5.14.21-150500.55.100.1
kernel-obs-build - update to 5.14.21-150500.55.100.1
kernel-default-extra-debuginfo - update to 5.14.21-150500.55.100.1
reiserfs-kmp-default - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-debuginfo - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-devel-debuginfo - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-devel - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-debugsource - update to 5.14.21-150500.55.100.1
kernel-default-vdso - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-vdso-debuginfo - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-vdso - update to 5.14.21-150500.55.100.1
kernel-default-vdso-debuginfo - update to 5.14.21-150500.55.100.1
kernel-debug-vdso-debuginfo - update to 5.14.21-150500.55.100.1
kernel-debug-vdso - update to 5.14.21-150500.55.100.1
kernel-debug-debuginfo - update to 5.14.21-150500.55.100.1
kernel-debug-devel - update to 5.14.21-150500.55.100.1
reiserfs-kmp-64kb-debuginfo - update to 5.14.21-150500.55.100.1
dtb-rockchip - update to 5.14.21-150500.55.100.1
dtb-amd - update to 5.14.21-150500.55.100.1
dtb-amazon - update to 5.14.21-150500.55.100.1
cluster-md-kmp-64kb - update to 5.14.21-150500.55.100.1
dtb-qcom - update to 5.14.21-150500.55.100.1
dtb-freescale - update to 5.14.21-150500.55.100.1
dtb-renesas - update to 5.14.21-150500.55.100.1
ocfs2-kmp-64kb-debuginfo - update to 5.14.21-150500.55.100.1
dtb-apm - update to 5.14.21-150500.55.100.1
kernel-64kb-optional - update to 5.14.21-150500.55.100.1
kernel-64kb-optional-debuginfo - update to 5.14.21-150500.55.100.1
kernel-64kb-extra-debuginfo - update to 5.14.21-150500.55.100.1
dtb-lg - update to 5.14.21-150500.55.100.1
dlm-kmp-64kb - update to 5.14.21-150500.55.100.1
kernel-debug - update to 5.14.21-150500.55.100.1
kernel-default-optional-debuginfo - update to 5.14.21-150500.55.100.1
kselftests-kmp-default - update to 5.14.21-150500.55.100.1
kernel-obs-build-debugsource - update to 5.14.21-150500.55.100.1
kernel-default-livepatch - update to 5.14.21-150500.55.100.1
kernel-debug-debugsource - update to 5.14.21-150500.55.100.1
kernel-default-livepatch-devel - update to 5.14.21-150500.55.100.1
kernel-64kb-debuginfo - update to 5.14.21-150500.55.100.1
kernel-source-vanilla - update to 5.14.21-150500.55.100.1
kernel-kvmsmall - update to 5.14.21-150500.55.100.1
kernel-zfcpdump - update to 5.14.21-150500.55.100.1
kernel-zfcpdump-debugsource - update to 5.14.21-150500.55.100.1
kernel-zfcpdump-debuginfo - update to 5.14.21-150500.55.100.1
dtb-aarch64 - update to 5.14.21-150500.55.100.1
kernel-default-base-rebuild - update to 5.14.21-150500.55.100.1.150500.6.47.1

External References

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