#VU94424 Use-after-free in Linux kernel - CVE-2022-48788

Vulnerability identifier: #VU94424

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-2022-48788

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_rdma_error_recovery_work() function in drivers/nvme/host/rdma.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/5593f72d1922403c11749532e3a0aa4cf61414e9
https://git.kernel.org/stable/c/d411b2a5da68b8a130c23097014434ac140a2ace
https://git.kernel.org/stable/c/324f5bdc52ecb6a6dadb31a62823ef8c709d1439
https://git.kernel.org/stable/c/646952b2210f19e584d2bf9eb5d092abdca2fcc1
https://git.kernel.org/stable/c/ea86027ac467a055849c4945906f799e7f65ab99
https://git.kernel.org/stable/c/b6bb1722f34bbdbabed27acdceaf585d300c5fd2

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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.