#VU97532 NULL pointer dereference in Linux kernel - CVE-2024-46721

Vulnerability identifier: #VU97532

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-2024-46721

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 __aafs_profile_mkdir() function in security/apparmor/apparmorfs.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

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External links
https://git.kernel.org/stable/c/8d9da10a392a32368392f7a16775e1f36e2a5346
https://git.kernel.org/stable/c/730ee2686af0d55372e97a2695005ff142702363
https://git.kernel.org/stable/c/52338a3aa772762b8392ce7cac106c1099aeab85
https://git.kernel.org/stable/c/e3c7d23f7a5c0b11ba0093cea32261ab8098b94e
https://git.kernel.org/stable/c/09b2d107fe63e55b6ae643f9f26bf8eb14a261d9
https://git.kernel.org/stable/c/59f742e55a469ef36c5c1533b6095a103b61eda8
https://git.kernel.org/stable/c/c49bbe69ee152bd9c1c1f314c0f582e76c578f64
https://git.kernel.org/stable/c/3dd384108d53834002be5630132ad5c3f32166ad

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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.