Out-of-bounds read in Linux kernel - CVE-2023-39179

Vulnerability identifier: #VU92165

CSH Severity: Medium

CVSS v4 BT: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-39179

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when handling SMB2 read requests in ksmbd. A remote attacker can send specially crafted request to ksmbd, trigger an out-of-bounds read error and read contents of memory on the system.

Linux kernel
openEuler
kernel
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-headers
kernel-source
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python3-perf
python3-perf-debuginfo

Install updates from vendor's website.

kernel - update to 5.10.0-276.0.0.178
kernel-debuginfo - update to 5.10.0-276.0.0.178
kernel-debugsource - update to 5.10.0-276.0.0.178
kernel-devel - update to 5.10.0-276.0.0.178
kernel-headers - update to 5.10.0-276.0.0.178
kernel-source - update to 5.10.0-276.0.0.178
kernel-tools - update to 5.10.0-276.0.0.178
kernel-tools-debuginfo - update to 5.10.0-276.0.0.178
kernel-tools-devel - update to 5.10.0-276.0.0.178
perf - update to 5.10.0-276.0.0.178
perf-debuginfo - update to 5.10.0-276.0.0.178
python3-perf - update to 5.10.0-276.0.0.178
python3-perf-debuginfo - update to 5.10.0-276.0.0.178

• https://www.zerodayinitiative.com/advisories/ZDI-24-588/
• https://lore.kernel.org/lkml/20230813160006.1073695-11-sashal@kernel.org/

• Out-of-bounds read in Linux Kernel ksmbd
• openEuler 22.03 LTS SP3 update for kernel