#VU90735 Improper locking in Linux kernel - CVE-2024-36894

Vulnerability identifier: #VU90735

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-2024-36894

CWE-ID: CWE-667

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 improper locking within the ffs_user_copy_worker() and ffs_epfile_async_io_complete() functions in drivers/usb/gadget/function/f_fs.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/73c05ad46bb4fbbdb346004651576d1c8dbcffbb
https://git.kernel.org/stable/c/d7461830823242702f5d84084bcccb25159003f4
https://git.kernel.org/stable/c/24729b307eefcd7c476065cd7351c1a018082c19

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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.