Memory leak in Linux kernel - CVE-2022-49191

Vulnerability identifier: #VU104391

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-2022-49191

CWE-ID: CWE-401

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 memory leak within the mxser_activate() function in drivers/tty/mxser.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_255-default
kernel-default-devel
kernel-default-man
kernel-default-kgraft
kernel-default-kgraft-devel
kernel-macros
kernel-devel
kernel-source
kernel-default
kernel-default-debugsource
kernel-default-debuginfo
cluster-md-kmp-default
kernel-default-base-debuginfo
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

Install update from vendor's website.

Linux kernel - addressed in versions 4.9.311, 4.14.276, 4.19.238, 5.4.189, 5.10.110, 5.15.33, 5.16.19, 5.17.2, 5.18
kgraft-patch-4_12_14-122_255-default - update to 1-8.5.1
kernel-default-devel - update to 4.12.14-122.255.1
kernel-default-man - update to 4.12.14-122.255.1
kernel-default-kgraft - update to 4.12.14-122.255.1
kernel-default-kgraft-devel - update to 4.12.14-122.255.1
kernel-macros - update to 4.12.14-122.255.1
kernel-devel - update to 4.12.14-122.255.1
kernel-source - update to 4.12.14-122.255.1
kernel-default - update to 4.12.14-122.255.1
kernel-default-debugsource - update to 4.12.14-122.255.1
kernel-default-debuginfo - update to 4.12.14-122.255.1
cluster-md-kmp-default - update to 4.12.14-122.255.1
kernel-default-base-debuginfo - update to 4.12.14-122.255.1
dlm-kmp-default - update to 4.12.14-122.255.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.255.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.255.1
kernel-default-devel-debuginfo - update to 4.12.14-122.255.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.255.1
kernel-syms - update to 4.12.14-122.255.1
gfs2-kmp-default - update to 4.12.14-122.255.1
kernel-default-base - update to 4.12.14-122.255.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.255.1
ocfs2-kmp-default - update to 4.12.14-122.255.1

• https://git.kernel.org/stable/c/125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d
• https://git.kernel.org/stable/c/2cd05c38a27bee7fb42aa4d43174d68ac55dac0f
• https://git.kernel.org/stable/c/376922045009f8ea2d20a8fa3475e95b47c41690
• https://git.kernel.org/stable/c/685b6d16bf89595310b5d61394c9b97cc9505c7c
• https://git.kernel.org/stable/c/6c9041b2f90c0eace73106f22350e1d2c98f5edc
• https://git.kernel.org/stable/c/6dffc2035fbaada60ca8db59e0962e34f760370a
• https://git.kernel.org/stable/c/996291d06851a26678a0fab488b6e1f0677c0576
• https://git.kernel.org/stable/c/b125b08dbee3611f03f53b71471813ed4ccafcdd
• https://git.kernel.org/stable/c/cd3a4907ee334b40d7aa880c7ab310b154fd5cd4
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.276
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.238
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.311
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.110
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.33
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.19
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.2
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.189

• Memory leak in Linux kernel tty driver
• SUSE update for the Linux Kernel