#VU104323 Memory leak in Linux kernel - CVE-2022-49648

Vulnerability identifier: #VU104323

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-2022-49648

CWE-ID: CWE-401

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 memory leak within the parse_var_defs() function in kernel/trace/trace_events_hist.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/22eeff55679d9e7c0f768c79bfbd83e2f8142d89
https://git.kernel.org/stable/c/4d453eb5e1eec89971aa5b3262857ee26cfdffd3
https://git.kernel.org/stable/c/78a1400c42ee11197eb1f0f85ba51df9a4fdfff0
https://git.kernel.org/stable/c/7edc3945bdce9c39198a10d6129377a5c53559c2
https://git.kernel.org/stable/c/eb622d5580b9e2ff694f62da6410618bd73853cb
https://git.kernel.org/stable/c/ecc6dec12c33aa92c086cd702af9f544ddaf3c75

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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.