#VU90422 NULL pointer dereference in Linux kernel - CVE-2023-52877

Vulnerability identifier: #VU90422

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-52877

CWE-ID: CWE-476

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 perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the tcpm_pd_svdm() function in drivers/usb/typec/tcpm/tcpm.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.15 - 5.15.137, 6.1 - 6.1.61, 6.5 - 6.5.10, 6.6 - 6.6 rc6, 6.7 rc1 - 6.7 rc7

---

External links
https://git.kernel.org/stable/c/e5f53a68a596e04df3fde3099273435a30b6fdac
https://git.kernel.org/stable/c/e7a802447c491903aa7cb45967aa2a934a4e63fc
https://git.kernel.org/stable/c/9ee038590d808a95d16adf92818dcd4752273c08
https://git.kernel.org/stable/c/b37a168c0137156042a0ca9626651b5a789e822b
https://git.kernel.org/stable/c/4987daf86c152ff882d51572d154ad12e4ff3a4b
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.138
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.62
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.11
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.1
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7

---

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?