#VU77324 Race condition in Linux kernel - CVE-2022-44033

Vulnerability identifier: #VU77324

Vulnerability risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-44033

CWE-ID: CWE-362

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 escalate privileges on the system.

The vulnerability exists due to a race condition in drivers/char/pcmcia/cm4040_cs.c in Linux kernel. An attacker with physical access to device can remove the PCMCIA device while calling open() to trigger a use-after-free error and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://lore.kernel.org/lkml/20220919040457.GA302681@ubuntu/
https://lore.kernel.org/lkml/20220915020834.GA110086@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.