#VU108434 Use-after-free in Linux kernel - CVE-2023-53082

Vulnerability identifier: #VU108434

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-2023-53082

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 vp_vdpa_remove() function in drivers/vdpa/virtio_pci/vp_vdpa.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.2, 6.2 rc5, 6.2 rc7, 6.2.1, 6.2.2, 6.2.3, 6.2.4, 6.2.5, 6.2.6, 6.2.7

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External links
https://git.kernel.org/stable/c/aed8efddd39b3434c96718d39009285c52b1cafc
https://git.kernel.org/stable/c/baafa2960731211837d8fc04ff3873ecb7440464
https://git.kernel.org/stable/c/fa1f327f93c9a7310cce9d2fcda28b7af91f7437
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.8

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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.