Buffer overflow in Linux kernel - CVE-2022-50341

Vulnerability identifier: #VU115702

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-2022-50341

CWE-ID: CWE-119

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 memory corruption within the fill_transform_hdr() and crypt_message() functions in fs/cifs/smb2ops.c. A local user can escalate privileges on the system.

Linux kernel
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
openEuler
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel (Red Hat package)
kernel-rt (Red Hat package)
perf-debuginfo
python3-perf-debuginfo
python3-perf
python2-perf-debuginfo
python2-perf
kernel
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-source
kernel-devel
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool

Install update from vendor's repository.

Linux kernel - update to 5.10.163
kernel (Red Hat package) - addressed in versions 3.10.0-1160.143.1.el7, 4.18.0-193.185.1.el8_2, 4.18.0-372.170.1.el8_6, 4.18.0-477.120.1.el8_8, 5.14.0-70.155.1.el9_0
kernel-rt (Red Hat package) - addressed in versions 3.10.0-1160.143.1.rt56.1295.el7, 5.14.0-70.155.1.rt21.227.el9_0
perf-debuginfo - update to 4.19.90-2510.3.0.0348
python3-perf-debuginfo - update to 4.19.90-2510.3.0.0348
python3-perf - update to 4.19.90-2510.3.0.0348
python2-perf-debuginfo - update to 4.19.90-2510.3.0.0348
python2-perf - update to 4.19.90-2510.3.0.0348
kernel - update to 4.19.90-2510.3.0.0348
perf - update to 4.19.90-2510.3.0.0348
kernel-tools-devel - update to 4.19.90-2510.3.0.0348
kernel-tools-debuginfo - update to 4.19.90-2510.3.0.0348
kernel-tools - update to 4.19.90-2510.3.0.0348
kernel-source - update to 4.19.90-2510.3.0.0348
kernel-devel - update to 4.19.90-2510.3.0.0348
kernel-debugsource - update to 4.19.90-2510.3.0.0348
kernel-debuginfo - update to 4.19.90-2510.3.0.0348
bpftool-debuginfo - update to 4.19.90-2510.3.0.0348
bpftool - update to 4.19.90-2510.3.0.0348

• https://git.kernel.org/stable/c/a13e51760703f71c25d5fc1f4a62dfa4b0cc80e9
• https://git.kernel.org/stable/c/bf0543b93740916ee91956f9a63da6fc0d79daaa
• https://git.kernel.org/stable/c/e8d16a54842d609fd4a3ed2d81d4333d6329aa94
• https://git.kernel.org/stable/c/e8e2861cc3258dbe407d01ea8c59bb5a53132301
• https://git.kernel.org/stable/c/f7f291e14dde32a07b1f0aa06921d28f875a7b54
• https://git.kernel.org/stable/c/fe6ea044c4f05706cb71040055b1c70c6c8275e0
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.163

• Buffer overflow in Linux kernel cifs
• openEuler 20.03 LTS SP4 update for kernel
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 9 update for kernel
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 9 update for kernel-rt
• Red Hat Enterprise Linux 7 Extended Lifecycle Support update for kernel
• Red Hat Enterprise Linux 7 Extended Lifecycle Support update for kernel-rt
• Red Hat Enterprise Linux 8 update for kernel