#VU104904 Resource management error in Linux kernel - CVE-2022-49721

Vulnerability identifier: #VU104904

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-2022-49721

CWE-ID: CWE-399

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 resource management error within the get_ftrace_plt(), ftrace_modify_call() and ftrace_make_nop() functions in arch/arm64/kernel/ftrace.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/a6253579977e4c6f7818eeb05bf2bc65678a7187
https://git.kernel.org/stable/c/bc28fde90937a920f7714ec4408269cac744f796
https://git.kernel.org/stable/c/db73aa9466338ec821ed2a0b01721fe4d06876b1
https://git.kernel.org/stable/c/dcecc96ed16f73417de5550f384e348c9d56f279

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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.