NULL pointer dereference in Linux kernel tracefs

1) NULL pointer dereference

EUVDB-ID: #VU93332

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-2024-39470

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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 eventfs_find_events() function in fs/tracefs/event_inode.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

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/5ade5fbdbbb1f023bb70730ba4d74146c8bc7eb9
https://git.kernel.org/stable/c/7a1b2d138189375ed1dcd7d0851118230221bd1d
https://git.kernel.org/stable/c/d4e9a968738bf66d3bb852dd5588d4c7afd6d7f4

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.