#VU99086 Use of uninitialized resource in Linux kernel - CVE-2024-49861

Vulnerability identifier: #VU99086

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-2024-49861

CWE-ID: CWE-908

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 use of uninitialized resource within the sizeof() function in net/core/filter.c, within the sizeof() function in kernel/trace/bpf_trace.c, within the arg_type_is_dynptr() function in kernel/bpf/verifier.c, within the sizeof() function in kernel/bpf/syscall.c, within the sizeof() function in kernel/bpf/helpers.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/a2c8dc7e21803257e762b0bf067fd13e9c995da0
https://git.kernel.org/stable/c/2ed98ee02d1e08afee88f54baec39ea78dc8a23c
https://git.kernel.org/stable/c/1e75d25133158b525e0456876e9bcfd6b2993fd5
https://git.kernel.org/stable/c/32556ce93bc45c730829083cb60f95a2728ea48b

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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.