#VU99048 Input validation error in Linux kernel - CVE-2024-47702

Vulnerability identifier: #VU99048

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-2024-47702

CWE-ID: CWE-20

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 improper input validation within the bpf_skb_is_valid_access(), xdp_is_valid_access() and flow_dissector_is_valid_access() functions in net/core/filter.c, within the check_packet_access() and check_mem_access() functions in kernel/bpf/verifier.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/f1620c93a1ec950d87ef327a565d3907736d3340
https://git.kernel.org/stable/c/f09757fe97a225ae505886eac572e4cbfba96537
https://git.kernel.org/stable/c/92de36080c93296ef9005690705cba260b9bd68a

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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.