Memory leak in Linux kernel dma-buf driver

1) Memory leak

EUVDB-ID: #VU92882

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-2022-48730

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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

The vulnerability exists due to memory leak within the dma_heap_ioctl() function in drivers/dma-buf/dma-heap.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/5d40f1bdad3dd1a177f21a90ad4353c1ed40ba3a
http://git.kernel.org/stable/c/24f8e12d965b24f8aea762589e0e9fe2025c005e
http://git.kernel.org/stable/c/cc8f7940d9c2d45f67b3d1a2f2b7a829ca561bed
http://git.kernel.org/stable/c/92c4cfaee6872038563c5b6f2e8e613f9d84d47d

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.