#VU102971 Infinite loop in Linux kernel - CVE-2024-47794

Vulnerability identifier: #VU102971

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-2024-47794

CWE-ID: CWE-835

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 infinite loop within the bpf_attach_type_to_tramp(), __bpf_trampoline_link_prog(), __bpf_trampoline_unlink_prog(), bpf_shim_tramp_link_release() and bpf_trampoline_link_cgroup_shim() functions in kernel/bpf/trampoline.c, within the bpf_tracing_link_release() and bpf_tracing_prog_attach() functions in kernel/bpf/syscall.c, within the bpf_prog_alloc_no_stats() function in kernel/bpf/core.c, within the prog_fd_array_get_ptr() function in kernel/bpf/arraymap.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/987aa730bad3e1ef66d9f30182294daa78f6387d
https://git.kernel.org/stable/c/d6083f040d5d8f8d748462c77e90547097df936e

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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.