#VU104475 Use-after-free in Linux kernel - CVE-2022-49082

Vulnerability identifier: #VU104475

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-2022-49082

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 _scsih_expander_node_remove() function in drivers/scsi/mpt3sas/mpt3sas_scsih.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/17d66b1c92bcb41e72271ec60069d3684aaa1c9c
https://git.kernel.org/stable/c/1bb8a7fc64d63ec818e367e1b37676ea2ef2d20c
https://git.kernel.org/stable/c/25c1353dca74ad7cf3fd7ce258fe7c957a147d5e
https://git.kernel.org/stable/c/87d663d40801dffc99a5ad3b0188ad3e2b4d1557

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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.