NULL pointer dereference in Linux kernel dma driver

1) NULL pointer dereference

EUVDB-ID: #VU90626

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-52492

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the EXPORT_SYMBOL_GPL() function in drivers/dma/dmaengine.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/9de69732dde4e443c1c7f89acbbed2c45a6a8e17
http://git.kernel.org/stable/c/047fce470412ab64cb7345f9ff5d06919078ad79
http://git.kernel.org/stable/c/2ab32986a0b9e329eb7f8f04dd57cc127f797c08
http://git.kernel.org/stable/c/7f0ccfad2031eddcc510caf4e57f2d4aa2d8a50b
http://git.kernel.org/stable/c/9263fd2a63487c6d04cbb7b74a48fb12e1e352d0
http://git.kernel.org/stable/c/f5c24d94512f1b288262beda4d3dcb9629222fc7

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.