#VU90869 Use of uninitialized resource in Linux kernel - CVE-2023-52842

Vulnerability identifier: #VU90869

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-52842

CWE-ID: CWE-908

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 perform a denial of service (DoS) attack.

The vulnerability exists due to use of uninitialized resource within the virtio_transport_alloc_skb() function in net/vmw_vsock/virtio_transport_common.c. A local user can perform a denial of service (DoS) attack.

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/cd12535b97dd7d18cf655ec78ce1cf1f29a576be
https://git.kernel.org/stable/c/0b8906fb48b99e993d6e8a12539f618f4854dd26
https://git.kernel.org/stable/c/34c4effacfc329aeca5635a69fd9e0f6c90b4101

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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.