Vulnerability identifier: #VU75102

Vulnerability risk: Low

CVSSv3.1: 7.4 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-2008

CWE-ID: CWE-129

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor:

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect validation of array index within a fault handler in drivers/dma-buf/udmabuf.c. A local privileged user can execute arbitrary code with kernel privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://www.zerodayinitiative.com/advisories/ZDI-23-441/
http://github.com/torvalds/linux/commit/05b252cccb2e5c3f56119d25de684b4f810ba4

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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. However, proof of concept for this vulnerability is available.