Improper locking in Linux kernel dma

1) Improper locking

EUVDB-ID: #VU90804

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-52516

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

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

The vulnerability exists due to improper locking within the __dma_entry_alloc(), __dma_entry_alloc_check_leak() and dma_entry_alloc() functions in kernel/dma/debug.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.10 - 6.6 rc6

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:5.10:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10:rc4:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.10.3:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/c79300599923daaa30f417c75555d5566b3d31ae
https://git.kernel.org/stable/c/ac0d068099349cbca3d93f2e3b15bb329364b08c
https://git.kernel.org/stable/c/be8f49029eca3efbad0d74dbff3cb9129994ffab
https://git.kernel.org/stable/c/fe2b811a02c3244ebf6059039e4a9e715e26a9e3
https://git.kernel.org/stable/c/fb5a4315591dae307a65fc246ca80b5159d296e1
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.198
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.134
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.56
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.6
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6

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.