#VU99442 Use-after-free in Linux kernel - CVE-2024-50073

Vulnerability identifier: #VU99442

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-2024-50073

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 gsm_cleanup_mux() function in drivers/tty/n_gsm.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/bf171b5e86e41de4c1cf32fb7aefa275c3d7de49
https://git.kernel.org/stable/c/c29f192e0d44cc1cbaf698fa1ff198f63556691a
https://git.kernel.org/stable/c/0eec592c6a7460ba795d7de29f3dc95cb5422e62
https://git.kernel.org/stable/c/9462f4ca56e7d2430fdb6dcc8498244acbfc4489

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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.