Remote denial of service in Linux kernel NFSD



Published: 2022-11-30
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-43945
CWE-ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Linux kernel
Operating systems & Components / Operating system

Vendor

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU69766

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2022-43945

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service attacl.

The vulnerability exists due to a boundary error within the Linux kernel NFSD implementation. A remote attacker can send the RPC message over TCP with garbage data added at the end of the message, trigger memory corruption and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 6.0.2


CPE2.3
External links

http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f90497a16e434c2211c66e3de8e77b17868382b8

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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