#VU90189 Use-after-free in Linux kernel - CVE-2022-48637

Vulnerability identifier: #VU90189

Vulnerability 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-2022-48637

CWE-ID: CWE-416

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 use-after-free error within the bnxt_tx_int() function in drivers/net/ethernet/broadcom/bnxt/bnxt.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/08483e4c0c83b221b8891434a04cec405dee94a6
https://git.kernel.org/stable/c/32afa1f23e42cc635ccf4c39f24514d03d1e8338
https://git.kernel.org/stable/c/c31f26c8f69f776759cbbdfb38e40ea91aa0dd65

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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.