#VU91466 Race condition in Linux kernel - CVE-2023-52872

Vulnerability identifier: #VU91466

Vulnerability risk: Low

CVSSv4.0: 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-2023-52872

CWE-ID: CWE-362

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition within the gsm_modem_upd_via_msc() function in drivers/tty/n_gsm.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

---

External links
http://git.kernel.org/stable/c/81a4dd5e6c78f5d8952fa8c9d36565db1fe01444
http://git.kernel.org/stable/c/df6cfab66ff2a44bd23ad5dd5309cb3421bb6593
http://git.kernel.org/stable/c/19d34b73234af542cc8a218cf398dee73cdb1890
http://git.kernel.org/stable/c/ce4df90333c4fe65acb8b5089fdfe9b955ce976a
http://git.kernel.org/stable/c/3a75b205de43365f80a33b98ec9289785da56243

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.