#VU74550 NULL pointer dereference in Linux kernel - CVE-2023-1382

Vulnerability identifier: #VU74550

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-2023-1382

CWE-ID: CWE-476

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 a NULL pointer dereference error in net/tipc/topsrv.c within the TIPC protocol implementation in the Linux kernel. A local user can perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 6.1, 6.1

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=2177371
https://lore.kernel.org/netdev/bc7bd3183f1c275c820690fc65b708238fe9e38e.1668807842.git.lucien.xin@gmail.com/T/#u

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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.