Vulnerability identifier: #VU94423

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: CVE-2022-48789

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 nvme_tcp_error_recovery_work() function in drivers/nvme/host/tcp.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/61a26ffd5ad3ece456d74c4c79f7b5e3f440a141
http://git.kernel.org/stable/c/e192184cf8bce8dd55d619f5611a2eaba996fa05
http://git.kernel.org/stable/c/5e42fca37ccc76f39f73732661bd47254cad5982
http://git.kernel.org/stable/c/bb0d8fb35c4ff00a503c2c4dca4cce8d102a21c4
http://git.kernel.org/stable/c/ff9fc7ebf5c06de1ef72a69f9b1ab40af8b07f9e

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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.