#VU95505 NULL pointer dereference in Linux kernel - CVE-2024-42235

Vulnerability identifier: #VU95505

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-2024-42235

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 crst_table_alloc() and base_crst_alloc() functions in arch/s390/mm/pgalloc.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

---

External links
https://git.kernel.org/stable/c/794fa52b94637d6b2e8c9474fbe3983af5c9f046
https://git.kernel.org/stable/c/f80bd8bb6f380bc265834c46058d38b34174813e
https://git.kernel.org/stable/c/b5efb63acf7bddaf20eacfcac654c25c446eabe8

---

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.