Memory leak in Linux kernel mt76 mt7915 driver

1) Memory leak

EUVDB-ID: #VU104222

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:U/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49230

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 mt7915_mcu_add_sta() function in drivers/net/wireless/mediatek/mt76/mt7915/mcu.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.16 - 5.16.18

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:5.16:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.16:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.16:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.16:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.16:rc4:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.16:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.16:rc6:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.16:rc8:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.16.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.16.1:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/a43736cd12d82913102eb49cb56787a5553e028f
https://git.kernel.org/stable/c/b334a245ff1d76b1e97af8cea648ea6798b9eb87
https://git.kernel.org/stable/c/daf02c7e3c3dc82ffa925999597bd455cf799551
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.19

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.