Use-after-free in Linux kernel - CVE-2022-3534

Vulnerability identifier: #VU72466

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-2022-3534

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 btf_dump_name_dups() function in tools/lib/bpf/btf_dump.c. A local user can execute arbitrary code with elevated privileges.

Linux kernel
Amazon Linux AMI
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
Anolis OS
Slackware Linux
SUSE Linux Enterprise Desktop
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Module for Basesystem
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP Applications
openSUSE Leap
Ubuntu
openEuler
dwarves (Ubuntu package)
libbpf-debugsource
libbpf-devel
libbpf0
libbpf0-debuginfo
libbpf0-32bit
libbpf0-32bit-debuginfo
kernel-source
kernel
kernel-devel
python3-perf
perf
python3-perf-debuginfo
bpftool-debuginfo
kernel-headers
bpftool
perf-debuginfo
kernel-debugsource
kernel-tools
kernel-tools-devel
kernel-debuginfo
kernel-tools-debuginfo
kernel-debug-devel
kernel-debug-modules-extra
kernel-debug-modules
kernel-modules
kernel-modules-extra
kernel-modules-internal
kernel-debug-core
kernel-debug
kernel-core
kernel-tools-libs
kernel-tools-libs-devel
linux-5.15.94/kernel-modules
linux-5.15.94/kernel-huge
linux-5.15.94/kernel-generic
linux-5.15.94/kernel-headers

Install updates from vendor's website.

dwarves (Ubuntu package) - addressed in versions Ubuntu Pro, 1.21-0ubuntu1~20.04.1
libbpf-debugsource - update to 0.5.0-150400.3.3.1
libbpf-devel - update to 0.5.0-150400.3.3.1
libbpf0 - update to 0.5.0-150400.3.3.1
libbpf0-debuginfo - update to 0.5.0-150400.3.3.1
libbpf0-32bit - update to 0.5.0-150400.3.3.1
libbpf0-32bit-debuginfo - update to 0.5.0-150400.3.3.1
kernel-source - update to 5.10.0-60.63.0.89
kernel - update to 5.10.0-60.63.0.89
kernel-devel - update to 5.10.0-60.63.0.89
python3-perf - update to 5.10.0-60.63.0.89
perf - update to 5.10.0-60.63.0.89
python3-perf-debuginfo - update to 5.10.0-60.63.0.89
bpftool-debuginfo - update to 5.10.0-60.63.0.89
kernel-headers - update to 5.10.0-60.63.0.89
bpftool - update to 5.10.0-60.63.0.89
perf-debuginfo - update to 5.10.0-60.63.0.89
kernel-debugsource - update to 5.10.0-60.63.0.89
kernel-tools - update to 5.10.0-60.63.0.89
kernel-tools-devel - update to 5.10.0-60.63.0.89
kernel-debuginfo - update to 5.10.0-60.63.0.89
kernel-tools-debuginfo - update to 5.10.0-60.63.0.89
kernel-devel - addressed in versions 5.10.134-13, 5.10.134-14
kernel-debug-devel - addressed in versions 5.10.134-13, 5.10.134-14
kernel-debug-modules-extra - addressed in versions 5.10.134-13, 5.10.134-14
kernel-debug-modules - addressed in versions 5.10.134-13, 5.10.134-14
kernel-tools - addressed in versions 5.10.134-13, 5.10.134-14
kernel-headers - addressed in versions 5.10.134-13, 5.10.134-14
kernel-modules - addressed in versions 5.10.134-13, 5.10.134-14
kernel-modules-extra - addressed in versions 5.10.134-13, 5.10.134-14
kernel-modules-internal - update to 5.10.134-13
kernel-debug-core - addressed in versions 5.10.134-13, 5.10.134-14
kernel-debug - addressed in versions 5.10.134-13, 5.10.134-14
kernel-core - addressed in versions 5.10.134-13, 5.10.134-14
kernel - addressed in versions 5.10.134-13, 5.10.134-14
bpftool - addressed in versions 5.10.134-13, 5.10.134-14
kernel-tools-libs - addressed in versions 5.10.134-13, 5.10.134-14
perf - addressed in versions 5.10.134-13, 5.10.134-14
python3-perf - addressed in versions 5.10.134-13, 5.10.134-14
kernel-tools-libs-devel - update to 5.10.134-14
linux-5.15.94/kernel-modules - update to 5.15.94
linux-5.15.94/kernel-huge - update to 5.15.94
linux-5.15.94/kernel-generic - update to 5.15.94
linux-5.15.94/kernel-headers - update to 5.15.94_smp
kernel - update to 6.1.10-15.42

• https://vuldb.com/?id.211032
• https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=93c660ca40b5d2f7c1b1626e955a8e9fa30e0749

• Privilege escalation in Linux Kernel libbpf
• Slackware Linux update for kernel
• SUSE update for libbpf
• Ubuntu update for dwarves-dfsg
• openEuler 22.03 LTS update for kernel
• Amazon Linux AMI update for kernel
• Anolis OS update for kernel
• Anolis OS update for kernel