Buffer overflow in Linux kernel bluetooth

1) Buffer overflow

EUVDB-ID: #VU99095

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-48947

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to memory corruption within the l2cap_config_req() function in net/bluetooth/l2cap_core.c. A local user can escalate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.9 - 6.1 rc7

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:4.9:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:4.9.8:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e
https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a
https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b
https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7
https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6
https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29
https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6ead
https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.303
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.270
https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.337
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.161
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.85
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.229
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.15
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1

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.