#VU102948 Improper locking in Linux kernel - CVE-2024-48875

Vulnerability identifier: #VU102948

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-2024-48875

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 btrfs_map_block() function in fs/btrfs/volumes.c, within the btrfs_dev_replace_start() and list_add() functions in fs/btrfs/dev-replace.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/8cca35cb29f81eba3e96ec44dad8696c8a2f9138
https://git.kernel.org/stable/c/a2e99dcd7aafa9d474f7d9b0740b8f93c4e156c2
https://git.kernel.org/stable/c/a5bc4e030f50fdbb1fbc69acc1e0c5f57c79d044

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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.