Improper locking in Linux kernel - CVE-2022-50571

Vulnerability identifier: #VU117596

CSH Severity: Low

CVSS v4: 6.8 [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]

CVE-ID: CVE-2022-50571

CWE-ID: CWE-667

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to improper locking within the bitmap_clear_bits(), __load_free_space_cache(), load_free_space_cache() and __btrfs_return_cluster_to_free_space() functions in fs/btrfs/free-space-cache.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Live Patching
kgraft-patch-4_12_14-122_280-default
ocfs2-kmp-default
kernel-default-kgraft-devel
kernel-default-kgraft
kernel-default-devel-debuginfo
kernel-default-man
kernel-macros
kernel-devel
kernel-source
kernel-default
kernel-default-base-debuginfo
kernel-default-debuginfo
gfs2-kmp-default-debuginfo
kernel-default-devel
cluster-md-kmp-default
dlm-kmp-default
cluster-md-kmp-default-debuginfo
dlm-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default-debugsource
gfs2-kmp-default
kernel-default-base
kernel-syms

Install update from vendor's repository.

Linux kernel - addressed in versions 5.19.17, 6.0.3, 6.0.5, 6.1
kgraft-patch-4_12_14-122_280-default - update to 1-8.5.1
ocfs2-kmp-default - update to 4.12.14-122.280.1
kernel-default-kgraft-devel - update to 4.12.14-122.280.1
kernel-default-kgraft - update to 4.12.14-122.280.1
kernel-default-devel-debuginfo - update to 4.12.14-122.280.1
kernel-default-man - update to 4.12.14-122.280.1
kernel-macros - update to 4.12.14-122.280.1
kernel-devel - update to 4.12.14-122.280.1
kernel-source - update to 4.12.14-122.280.1
kernel-default - update to 4.12.14-122.280.1
kernel-default-base-debuginfo - update to 4.12.14-122.280.1
kernel-default-debuginfo - update to 4.12.14-122.280.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.280.1
kernel-default-devel - update to 4.12.14-122.280.1
cluster-md-kmp-default - update to 4.12.14-122.280.1
dlm-kmp-default - update to 4.12.14-122.280.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.280.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.280.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.280.1
kernel-default-debugsource - update to 4.12.14-122.280.1
gfs2-kmp-default - update to 4.12.14-122.280.1
kernel-default-base - update to 4.12.14-122.280.1
kernel-syms - update to 4.12.14-122.280.1

• https://git.kernel.org/stable/c/819a61301275dcc573e3f520be3dc2c8531bee2d
• https://git.kernel.org/stable/c/8a1ae2781dee9fc21ca82db682d37bea4bd074ad
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.17
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.3
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.5
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1

• Improper locking in Linux kernel btrfs
• SUSE update for the Linux Kernel