Use of uninitialized resource in Linux kernel udf

1) Use of uninitialized resource

EUVDB-ID: #VU100084

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-2024-50143

CWE-ID: CWE-908 - Use of Uninitialized Resource

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to use of uninitialized resource within the udf_current_aext() function in fs/udf/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: 4.19 - 6.11.5

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:4.19:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.19.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.19.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.19.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.19.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.19.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.19.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.19.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.19.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.19.9:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/4fc0d8660e391dcd8dde23c44d702be1f6846c61
https://git.kernel.org/stable/c/72e445df65a0aa9066c6fe2b8736ba2fcca6dac7
https://git.kernel.org/stable/c/1ac49babc952f48d82676979b20885e480e69be8
https://git.kernel.org/stable/c/e52e0b92ed31dc62afbda15c243dcee0bb5bb58d
https://git.kernel.org/stable/c/264db9d666ad9a35075cc9ed9ec09d021580fbb1
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.323
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.170
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.285
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.115
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.6
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.59

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.