#VU108213 Memory leak in Linux kernel - CVE-2025-23140

Vulnerability identifier: #VU108213

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-2025-23140

CWE-ID: CWE-401

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 memory leak within the pci_endpoint_test_release_irq() function in drivers/misc/pci_endpoint_test.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.4, 5.4.0, 5.4.0 rc6, 5.4.1, 5.4.2, 5.4.3, 5.4.4, 5.4.5, 5.4.6, 5.4.7, 5.4.8, 5.4.9, 5.4.10, 5.4.11, 5.4.12, 5.4.13, 5.4.14, 5.4.15, 5.4.16, 5.4.17, 5.4.18, 5.4.19, 5.4.20, 5.4.21, 5.4.22, 5.4.23, 5.4.24, 5.4.25, 5.4.26, 5.4.27, 5.4.28, 5.4.29, 5.4.30, 5.4.31, 5.4.32, 5.4.33, 5.4.34, 5.4.35, 5.4.36, 5.4.37, 5.4.38, 5.4.39, 5.4.40, 5.4.41, 5.4.42, 5.4.43, 5.4.44, 5.4.45, 5.4.46, 5.4.47, 5.4.48, 5.4.49, 5.4.50, 5.4.51, 5.4.52, 5.4.53, 5.4.54, 5.4.55, 5.4.56, 5.4.57, 5.4.58, 5.4.59, 5.4.60, 5.4.61, 5.4.62, 5.4.63, 5.4.64, 5.4.65, 5.4.66, 5.4.67, 5.4.68, 5.4.69, 5.4.70, 5.4.71, 5.4.72, 5.4.73, 5.4.74, 5.4.75, 5.4.76, 5.4.77, 5.4.78, 5.4.79, 5.4.80, 5.4.81, 5.4.82, 5.4.83, 5.4.84, 5.4.85, 5.4.86, 5.4.87, 5.4.88, 5.4.89, 5.4.90, 5.4.91, 5.4.92, 5.4.93, 5.4.94, 5.4.95, 5.4.96, 5.4.97, 5.4.98, 5.4.99, 5.4.100, 5.4.101, 5.4.102, 5.4.103, 5.4.104, 5.4.105, 5.4.106, 5.4.107, 5.4.108, 5.4.109, 5.4.110, 5.4.111, 5.4.112, 5.4.113, 5.4.114, 5.4.115, 5.4.116, 5.4.117, 5.4.118, 5.4.119, 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External links
https://git.kernel.org/stable/c/0557e70e2aeba8647bf5a950820b67cfb86533db
https://git.kernel.org/stable/c/54c9f299ad7d7c4be5d271ed12d01a59e95b8907
https://git.kernel.org/stable/c/5a4b7181213268c9b07bef8800905528435db44a
https://git.kernel.org/stable/c/705be96504779e4a333ea042b4779ea941f0ace9
https://git.kernel.org/stable/c/770407f6173f4f39f4e2c1b54422b79ce6c98bdb
https://git.kernel.org/stable/c/9d5118b107b1a2353ed0dff24404aee2e6b7ca0a
https://git.kernel.org/stable/c/e516e187bf32d8decc7c7d0025ae4857cad13c0e
https://git.kernel.org/stable/c/f6cb7828c8e17520d4f5afb416515d3fae1af9a9
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.237
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.181
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.293
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.135
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.25
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.3
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.88

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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.