#VU94270 Improper locking in Linux kernel - CVE-2024-40980

Vulnerability identifier: #VU94270

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-2024-40980

CWE-ID: CWE-667

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 locking within the reset_per_cpu_data(), trace_drop_common(), net_dm_hw_reset_per_cpu_data(), net_dm_hw_summary_probe() and __net_dm_cpu_data_init() functions in net/core/drop_monitor.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/594e47957f3fe034645e6885393ce96c12286334
https://git.kernel.org/stable/c/96941f29ebcc1e9cbf570dc903f30374909562f5
https://git.kernel.org/stable/c/b3722fb69468693555f531cddda5c30444726dac
https://git.kernel.org/stable/c/f251ccef1d864790e5253386e95544420b7cd8f3
https://git.kernel.org/stable/c/76ce2f9125244e1708d29c1d3f9d1d50b347bda0
https://git.kernel.org/stable/c/07ea878684dfb78a9d4f564c39d07e855a9e242e
https://git.kernel.org/stable/c/f1e197a665c2148ebc25fe09c53689e60afea195

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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.