#VU104439 Use-after-free in Linux kernel - CVE-2022-49711

Vulnerability identifier: #VU104439

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-2022-49711

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 fsl_mc_bus_remove() function in drivers/bus/fsl-mc/fsl-mc-bus.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/161b68b0a728377aaa10a8e14c70e7734f3c9ff7
https://git.kernel.org/stable/c/928ea98252ad75118950941683893cf904541da9
https://git.kernel.org/stable/c/ccd1751092341ac120a961835211f9f2e3735963

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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.