#VU108789 Memory leak in Linux kernel - CVE-2025-37820

Vulnerability identifier: #VU108789

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-2025-37820

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 xennet_run_xdp() function in drivers/net/xen-netfront.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.14, 6.14.1, 6.14.2, 6.14.3, 6.14.4

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External links
https://git.kernel.org/stable/c/5b83d30c63f9964acb1bc63eb8e670b9e0d2c240
https://git.kernel.org/stable/c/cc3628dcd851ddd8d418bf0c897024b4621ddc92
https://git.kernel.org/stable/c/cefd8a2e2de46209ce66e6d30c237eb59b6c5bfa
https://git.kernel.org/stable/c/d6a9c4e6f9b3ec3ad98468c950ad214af8a2efb9
https://git.kernel.org/stable/c/eefccd889df3b49d92e7349d94c4aa7e1ba19f6c
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.5

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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.