#VU90239 Use-after-free in Linux kernel - CVE-2023-52572

Vulnerability identifier: #VU90239

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-2023-52572

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 remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the cifs_wake_up_task(), __release_mid(), wait_for_response(), cifs_sync_mid_result(), cifs_compound_callback(), compound_send_recv(), SendReceive() and SendReceiveBlockingLock() functions in fs/smb/client/transport.c. A remote non-authenticated attacker 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/908b3b5e97d25e879de3d1f172a255665491c2c3
https://git.kernel.org/stable/c/76569e3819e0bb59fc19b1b8688b017e627c268a
https://git.kernel.org/stable/c/d527f51331cace562393a8038d870b3e9916686f

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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.