#VU83412 Use-after-free in Linux kernel - CVE-2022-44034

Vulnerability identifier: #VU83412

Vulnerability risk: Low

CVSSv4.0: 2 [CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-44034

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 an attacker to execute arbitrary code.

The vulnerability exists due to a use-after-free error within the drivers/char/pcmcia/scr24x_cs.c caused by a race between scr24x_open() and scr24x_remove(). An attacker with physical access to device can trigger a use-after-free error and execute arbitrary code.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.0 rc1 - 6.0.6

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External links
https://lore.kernel.org/lkml/20220919101825.GA313940@ubuntu/
https://lore.kernel.org/lkml/20220916050333.GA188358@ubuntu/

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Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.