#VU88888 NULL pointer dereference in Linux kernel - CVE-2024-26591

Vulnerability identifier: #VU88888

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-2024-26591

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 a NULL pointer dereference error within the bpf_tracing_prog_attach() function in kernel/bpf/syscall.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 5.15.148, 5.15.148

---

External links
https://git.kernel.org/stable/c/a7b98aa10f895e2569403896f2d19b73b6c95653
https://git.kernel.org/stable/c/6cc9c0af0aa06f781fa515a1734b1a4239dfd2c0
https://git.kernel.org/stable/c/8c8bcd45e9b10eef12321f08d2e5be33d615509c
https://git.kernel.org/stable/c/50ae82f080cf87e84828f066c31723b781d68f5b
https://git.kernel.org/stable/c/715d82ba636cb3629a6e18a33bb9dbe53f9936ee

---

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.