Use-after-free in Linux kernel - CVE-2022-50115

Vulnerability identifier: #VU111423

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-2022-50115

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 sof_ipc3_control_load_bytes() function in sound/soc/sof/ipc3-topology.c. A local user can escalate privileges on the system.

Linux kernel
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Live Patching
kernel-livepatch-5_14_21-150500_55_113-default-debuginfo
kernel-livepatch-SLE15-SP5_Update_28-debugsource
kernel-livepatch-5_14_21-150500_55_113-default
kernel-default
kernel-default-debuginfo
kernel-default-debugsource
kernel-default-livepatch-devel
kernel-default-livepatch

Install update from vendor's repository.

Linux kernel - addressed in versions 5.18.18, 5.19.2, 6.0
kernel-livepatch-5_14_21-150500_55_113-default-debuginfo - update to 1-150500.11.3.1
kernel-livepatch-SLE15-SP5_Update_28-debugsource - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_113-default - update to 1-150500.11.3.1
kernel-default - update to 5.14.21-150500.55.113.1
kernel-default-debuginfo - update to 5.14.21-150500.55.113.1
kernel-default-debugsource - update to 5.14.21-150500.55.113.1
kernel-default-livepatch-devel - update to 5.14.21-150500.55.113.1
kernel-default-livepatch - update to 5.14.21-150500.55.113.1

• https://git.kernel.org/stable/c/8463986b54295e6b65ddf2b7c65627d01ce7643b
• https://git.kernel.org/stable/c/c2eddfcafcffaf1b9245ea0dde9143bbfb47d5d1
• https://git.kernel.org/stable/c/d5bd47f3ca124058a8e87eae4508afeda2132611
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.18
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0

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