#VU21444 Heap-based buffer overflow in Linux kernel
Vulnerability identifier: #VU21444
Vulnerability risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-122
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the mwifiex_set_wmm_params() function in the Marvell Wi-Fi chip driver in Linux kernel. A local user can run a specially crafted application to trigger a heap-based buffer overflow and execute arbitrary code on the system with elevated privileges.
Mitigation
Install updates from vendor's repository.
Vulnerable software versions
Linux kernel: 5.2 - 5.2.16, 4.9 - 4.9.193, 4.4.0 - 4.4.193, 4.19 - 4.19.74, 4.14.0 - 4.14.145
External links
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.17
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.194
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.194
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.75
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.146
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3
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.
