Use-after-free in Linux kernel - CVE-2022-49377

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Main Vulnerability Database Vulnerabilities #VU104432

Use-after-free in Linux kernel - CVE-2022-49377

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


Vulnerability identifier: #VU104432
CSH Severity: Low
CVSS v4 BT: 5.9 [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/E:U/U:Clear]
CVE-ID: CVE-2022-49377
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 blk_mq_has_sqsched() and blk_mq_get_sq_hctx() functions in block/blk-mq.c. A local user can escalate privileges on the system.


Affected software

Linux kernel
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise High Availability Extension 15
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 Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Manager Proxy
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
SUSE Linux Enterprise Live Patching
openSUSE Leap
openEuler
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel-livepatch-SLE15-SP4_Update_38-debugsource
kernel-livepatch-5_14_21-150400_24_158-default
kernel-livepatch-5_14_21-150400_24_158-default-debuginfo
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
python3-perf-debuginfo
kernel
kernel-debuginfo
kernel-debugsource
kernel-headers
kernel-source
kernel-tools
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-devel
bpftool
bpftool-debuginfo
kernel-zfcpdump-devel-matched (Red Hat package)
kernel-rt (Red Hat package)
kernel-source-rt
kernel-rt-debuginfo
kernel-rt
kernel-rt-debugsource
kernel-default-devel-debuginfo
kernel-docs
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-zfcpdump
kernel-macros
kernel-syms
kernel-default-debugsource
kernel-default-devel
kernel-default-debuginfo
kernel-source-vanilla
reiserfs-kmp-default-debuginfo
kernel-64kb
dtb-amazon
dtb-amlogic
dtb-hisilicon
kernel-64kb-debuginfo
dtb-freescale
dtb-allwinner
cluster-md-kmp-64kb
cluster-md-kmp-64kb-debuginfo
kernel-default-optional
cluster-md-kmp-default-debuginfo
kernel-obs-qa
kernel-default
kernel-default-extra-debuginfo
kselftests-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
dlm-kmp-default-debuginfo
kernel-obs-build
kernel-default-optional-debuginfo
ocfs2-kmp-default
ocfs2-kmp-default-debuginfo
dtb-socionext
kernel-kvmsmall-debugsource
kernel-kvmsmall-debuginfo
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-devel
kernel-debug-devel
kernel-debug-debuginfo
kernel-debug-devel-debuginfo
kernel-debug-debugsource
kernel-debug
kernel-docs-html
dtb-aarch64
reiserfs-kmp-64kb-debuginfo
kernel-64kb-optional
gfs2-kmp-64kb
kernel-64kb-extra-debuginfo
dtb-rockchip
dtb-apple
dtb-apm
dlm-kmp-64kb-debuginfo
reiserfs-kmp-64kb
kernel-64kb-extra
dtb-lg
kernel-64kb-devel
kernel-kvmsmall
reiserfs-kmp-default
kernel-default-livepatch-devel
kselftests-kmp-default
gfs2-kmp-default
cluster-md-kmp-default
kernel-obs-build-debugsource
kernel-default-extra
kernel-default-livepatch
dlm-kmp-default
gfs2-kmp-64kb-debuginfo
ocfs2-kmp-64kb
dtb-amd
kernel-64kb-optional-debuginfo
dtb-altera
kernel-64kb-devel-debuginfo
dtb-sprd
dtb-xilinx
dtb-exynos
dtb-qcom
dtb-broadcom
kselftests-kmp-64kb-debuginfo
dtb-renesas
kernel-64kb-debugsource
dtb-mediatek
dtb-arm
dlm-kmp-64kb
kselftests-kmp-64kb
dtb-marvell
dtb-nvidia
ocfs2-kmp-64kb-debuginfo
dtb-cavium
kernel-default-base
kernel-default-base-rebuild
dlm-kmp-rt
dlm-kmp-rt-debuginfo
cluster-md-kmp-rt
kselftests-kmp-rt
kernel-syms-rt
reiserfs-kmp-rt
kernel-rt-devel
kernel-rt_debug-devel
ocfs2-kmp-rt
kernel-rt_debug-devel-debuginfo
reiserfs-kmp-rt-debuginfo
kernel-rt-vdso-debuginfo
kernel-rt-extra
gfs2-kmp-rt
kernel-rt-livepatch
kernel-rt-vdso
kernel-rt-livepatch-devel
kernel-devel-rt
kernel-rt-optional-debuginfo
kernel-rt_debug-debugsource
ocfs2-kmp-rt-debuginfo
kernel-rt-devel-debuginfo
kernel-rt_debug-vdso
kernel-rt_debug
kernel-rt_debug-vdso-debuginfo
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-debug-vdso
kernel-debug-vdso-debuginfo
kernel-default-vdso-debuginfo
kernel-kvmsmall-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-default-vdso

How to mitigate CVE-2022-49377

Install update from vendor's website.

Linux kernel - update to 5.17.15
kernel-livepatch-SLE15-SP4_Update_38-debugsource - update to 1-150400.9.3.1
kernel-livepatch-5_14_21-150400_24_158-default - update to 1-150400.9.3.1
kernel-livepatch-5_14_21-150400_24_158-default-debuginfo - update to 1-150400.9.3.1
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
python3-perf-debuginfo - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
kernel - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
kernel-debuginfo - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
kernel-debugsource - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
kernel-headers - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
kernel-source - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
kernel-tools - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
python3-perf - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
perf-debuginfo - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
perf - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
kernel-tools-devel - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
kernel-tools-debuginfo - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
kernel-devel - addressed in versions 5.10.0-279.0.0.181, 5.10.0-279.0.0.182
bpftool - update to 5.10.0-279.0.0.182
bpftool-debuginfo - update to 5.10.0-279.0.0.182
kernel-zfcpdump-devel-matched (Red Hat package) - update to 5.14.0-70.136.1.el9_0
kernel-rt (Red Hat package) - update to 5.14.0-70.136.1.rt21.208.el9_0
kernel-source-rt - addressed in versions 5.14.21-150400.15.115.1, 5.14.21-150500.13.91.1
kernel-rt-debuginfo - addressed in versions 5.14.21-150400.15.115.1, 5.14.21-150500.13.91.1
kernel-rt - addressed in versions 5.14.21-150400.15.115.1, 5.14.21-150500.13.91.1
kernel-rt-debugsource - addressed in versions 5.14.21-150400.15.115.1, 5.14.21-150500.13.91.1
kernel-default-devel-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-docs - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-zfcpdump-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-zfcpdump-debugsource - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-zfcpdump - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-source - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-macros - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-devel - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-syms - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-default-debugsource - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-default-devel - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-default-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-source-vanilla - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
reiserfs-kmp-default-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-64kb - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-amazon - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-amlogic - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-hisilicon - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-64kb-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-freescale - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-allwinner - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
cluster-md-kmp-64kb - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
cluster-md-kmp-64kb-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-default-optional - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
cluster-md-kmp-default-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-obs-qa - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-default - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-default-extra-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kselftests-kmp-default-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
gfs2-kmp-default-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dlm-kmp-default-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-obs-build - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-default-optional-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
ocfs2-kmp-default - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
ocfs2-kmp-default-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-socionext - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-kvmsmall-debugsource - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-kvmsmall-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-kvmsmall-devel-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-kvmsmall-devel - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-debug-devel - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-debug-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-debug-devel-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-debug-debugsource - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-debug - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-docs-html - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-aarch64 - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
reiserfs-kmp-64kb-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-64kb-optional - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
gfs2-kmp-64kb - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-64kb-extra-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-rockchip - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-apple - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-apm - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dlm-kmp-64kb-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
reiserfs-kmp-64kb - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-64kb-extra - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-lg - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-64kb-devel - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-kvmsmall - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
reiserfs-kmp-default - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-default-livepatch-devel - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kselftests-kmp-default - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
gfs2-kmp-default - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
cluster-md-kmp-default - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-obs-build-debugsource - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-default-extra - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-default-livepatch - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dlm-kmp-default - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
gfs2-kmp-64kb-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
ocfs2-kmp-64kb - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-amd - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-64kb-optional-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-altera - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-64kb-devel-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-sprd - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-xilinx - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-exynos - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-qcom - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-broadcom - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kselftests-kmp-64kb-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-renesas - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-64kb-debugsource - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-mediatek - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-arm - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dlm-kmp-64kb - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kselftests-kmp-64kb - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-marvell - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-nvidia - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
ocfs2-kmp-64kb-debuginfo - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
dtb-cavium - addressed in versions 5.14.21-150400.24.158.1, 5.14.21-150500.55.100.1
kernel-default-base - addressed in versions 5.14.21-150400.24.158.1.150400.24.78.1, 5.14.21-150500.55.100.1.150500.6.47.1
kernel-default-base-rebuild - addressed in versions 5.14.21-150400.24.158.1.150400.24.78.1, 5.14.21-150500.55.100.1.150500.6.47.1
dlm-kmp-rt - update to 5.14.21-150500.13.91.1
dlm-kmp-rt-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-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
ocfs2-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-rt_debug-devel-debuginfo - 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-livepatch-devel - update to 5.14.21-150500.13.91.1
kernel-devel-rt - 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_debug-vdso - update to 5.14.21-150500.13.91.1
kernel-rt_debug - update to 5.14.21-150500.13.91.1
kernel-rt_debug-vdso-debuginfo - 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-debug-vdso - update to 5.14.21-150500.55.100.1
kernel-debug-vdso-debuginfo - update to 5.14.21-150500.55.100.1
kernel-default-vdso-debuginfo - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-vdso - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-vdso-debuginfo - update to 5.14.21-150500.55.100.1
kernel-default-vdso - update to 5.14.21-150500.55.100.1

External References

Related Security Bulletins