#VU99053 Double free in Linux kernel - CVE-2022-49017

Vulnerability identifier: #VU99053

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-2022-49017

CWE-ID: CWE-415

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 double free error within the tipc_crypto_key_synch() function in net/tipc/crypto.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/a1ba595e35aa3afbe417ff0af353afb9f65559c0
https://git.kernel.org/stable/c/1daec0815655e110c6f206c5e777a4af8168ff58
https://git.kernel.org/stable/c/e128190adb2edfd5042105b5d1ed4553f295f5ef
https://git.kernel.org/stable/c/3067bc61fcfe3081bf4807ce65560f499e895e77

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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.