#VU100615 Use-after-free in Linux kernel - CVE-2024-50283

Vulnerability identifier: #VU100615

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-2024-50283

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 __handle_ksmbd_work() function in fs/smb/server/server.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/f7557bbca40d4ca8bb1c6c940ac6c95078bd0827
https://git.kernel.org/stable/c/c6cdc08c25a868a08068dfc319fa9fce982b8e7f
https://git.kernel.org/stable/c/1b6ad475d4ed577d34e0157eb507be00c588bf5c
https://git.kernel.org/stable/c/b8fc56fbca7482c1e5c0e3351c6ae78982e25ada

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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.