Use-after-free in Linux kernel - CVE-2022-50780

Vulnerability identifier: #VU120393

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-2022-50780

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to a use-after-free error within the net_assign_generic() and ops_init() functions in net/core/net_namespace.c. A local user can escalate privileges on the system.

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_293-default
cluster-md-kmp-default
kernel-default-devel-debuginfo
kernel-default-man
kernel-macros
kernel-devel
kernel-source
gfs2-kmp-default-debuginfo
kernel-syms
kernel-default-devel
ocfs2-kmp-default
ocfs2-kmp-default-debuginfo
kernel-default-base
kernel-default
dlm-kmp-default
dlm-kmp-default-debuginfo
gfs2-kmp-default
kernel-default-base-debuginfo
cluster-md-kmp-default-debuginfo
kernel-default-kgraft
kernel-default-debuginfo
kernel-default-debugsource
kernel-default-kgraft-devel

Install update from vendor's repository.

Linux kernel - addressed in versions 4.19.264, 5.4.223, 5.10.153, 5.15.77, 6.0.7, 6.1
kgraft-patch-4_12_14-122_293-default - update to 1-8.3.1
cluster-md-kmp-default - update to 4.12.14-122.293.1
kernel-default-devel-debuginfo - update to 4.12.14-122.293.1
kernel-default-man - update to 4.12.14-122.293.1
kernel-macros - update to 4.12.14-122.293.1
kernel-devel - update to 4.12.14-122.293.1
kernel-source - update to 4.12.14-122.293.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.293.1
kernel-syms - update to 4.12.14-122.293.1
kernel-default-devel - update to 4.12.14-122.293.1
ocfs2-kmp-default - update to 4.12.14-122.293.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.293.1
kernel-default-base - update to 4.12.14-122.293.1
kernel-default - update to 4.12.14-122.293.1
dlm-kmp-default - update to 4.12.14-122.293.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.293.1
gfs2-kmp-default - update to 4.12.14-122.293.1
kernel-default-base-debuginfo - update to 4.12.14-122.293.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.293.1
kernel-default-kgraft - update to 4.12.14-122.293.1
kernel-default-debuginfo - update to 4.12.14-122.293.1
kernel-default-debugsource - update to 4.12.14-122.293.1
kernel-default-kgraft-devel - update to 4.12.14-122.293.1

• https://git.kernel.org/stable/c/4a4df5e78712de39d6f90d6a64b5eb48dca03bd5
• https://git.kernel.org/stable/c/5a2ea549be94924364f6911227d99be86e8cf34a
• https://git.kernel.org/stable/c/97ad240fd9aa9214497d14af2b91608e20856cac
• https://git.kernel.org/stable/c/a1e18acb0246bfb001b08b8b1b830b5ec92a0f13
• https://git.kernel.org/stable/c/c3edc6e808209aa705185f732e682a370981ced1
• https://git.kernel.org/stable/c/d266935ac43d57586e311a087510fe6a084af742
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.264
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.153
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.77
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.223
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.7
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1

• Use-after-free in Linux kernel core
• SUSE update for the Linux Kernel