#VU105066 Resource management error in Linux kernel - CVE-2025-21728

Vulnerability identifier: #VU105066

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-2025-21728

CWE-ID: CWE-399

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 resource management error within the bpf_send_signal_common() function in kernel/trace/bpf_trace.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.6 - 6.6.75

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External links
https://git.kernel.org/stable/c/092fc76b7ab4163e008f9cde596a58dad2108260
https://git.kernel.org/stable/c/78b97783496b454435639937db3303e900a24d3f
https://git.kernel.org/stable/c/87c544108b612512b254c8f79aa5c0a8546e2cc4
https://git.kernel.org/stable/c/be42a09fe898635b0093c0c8dac1bfabe225c240
https://git.kernel.org/stable/c/eeef8e65041a031bd8a747a392c14b76a123a12c
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.76

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?