#VU94231 Use-after-free in Linux kernel - CVE-2024-39496

Vulnerability identifier: #VU94231

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-39496

CWE-ID: CWE-416

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 escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the btrfs_load_zone_info() function in fs/btrfs/zoned.c. A local user can escalate privileges on the system.

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/17765964703b88d8befd899f8501150bb7e07e43
https://git.kernel.org/stable/c/092571ef9a812566c8f2c9038d9c2a64c49788d6
https://git.kernel.org/stable/c/a0cc006f4214b87e70983c692e05bb36c59b5752
https://git.kernel.org/stable/c/0090d6e1b210551e63cf43958dc7a1ec942cdde9

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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.