Use-after-free in Linux kernel - CVE-2022-49608

Vulnerability identifier: #VU104455

CSH Severity: Low

CVSS v4 BT: 5.9 [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/E:U/U:Clear]

CVE-ID: CVE-2022-49608

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 rt2880_pinmux_pins() function in drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c. A local user can escalate privileges on the system.

Linux kernel
openEuler
kernel
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-source
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python2-perf
python2-perf-debuginfo
python3-perf
python3-perf-debuginfo

Install update from vendor's website.

Linux kernel - addressed in versions 4.19.254, 5.4.208, 5.10.134, 5.15.58, 5.18.15, 5.19
kernel - update to 4.19.90-2503.4.0.0320
bpftool - update to 4.19.90-2503.4.0.0320
bpftool-debuginfo - update to 4.19.90-2503.4.0.0320
kernel-debuginfo - update to 4.19.90-2503.4.0.0320
kernel-debugsource - update to 4.19.90-2503.4.0.0320
kernel-devel - update to 4.19.90-2503.4.0.0320
kernel-source - update to 4.19.90-2503.4.0.0320
kernel-tools - update to 4.19.90-2503.4.0.0320
kernel-tools-debuginfo - update to 4.19.90-2503.4.0.0320
kernel-tools-devel - update to 4.19.90-2503.4.0.0320
perf - update to 4.19.90-2503.4.0.0320
perf-debuginfo - update to 4.19.90-2503.4.0.0320
python2-perf - update to 4.19.90-2503.4.0.0320
python2-perf-debuginfo - update to 4.19.90-2503.4.0.0320
python3-perf - update to 4.19.90-2503.4.0.0320
python3-perf-debuginfo - update to 4.19.90-2503.4.0.0320

• https://git.kernel.org/stable/c/13596e6c9e541e90e5fc2c52b23f08b951370da9
• https://git.kernel.org/stable/c/44016a85419ca0d4f1e4d0127b330f8e4e2a57d0
• https://git.kernel.org/stable/c/5595d30c4dc27d939635c3188c68203b6ece1711
• https://git.kernel.org/stable/c/5694b162f275fb9a9f89422701b2b963be11e496
• https://git.kernel.org/stable/c/6194c021496addc11763d1ffa89ce5751889fe3c
• https://git.kernel.org/stable/c/c3b821e8e406d5650e587b7ac624ac24e9b780a8
• https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.254
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.134
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.58
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.15
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.208

• Use-after-free in Linux kernel staging mt7621-pinctrl driver
• openEuler 20.03 LTS SP4 update for kernel