#VU90068 Use-after-free in Linux kernel - CVE-2023-52752

Vulnerability identifier: #VU90068

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-2023-52752

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 seq_printf() and spin_unlock() functions in fs/smb/client/cifs_debug.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/558817597d5fbd7af31f891b67b0fd20f0d047b7
https://git.kernel.org/stable/c/89929ea46f9cc11ba66d2c64713aa5d5dc723b09
https://git.kernel.org/stable/c/0ab6f842452ce2cae04209d4671ac6289d0aef8a
https://git.kernel.org/stable/c/d328c09ee9f15ee5a26431f5aad7c9239fa85e62

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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.