#VU103046 Resource management error in Linux kernel - CVE-2025-21651

Vulnerability identifier: #VU103046

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-2025-21651

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 hclge_misc_irq_init(), hclge_init_ae_dev() and hclge_uninit_ae_dev() functions in drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.12, 6.12.1, 6.12.2, 6.12.3, 6.12.4, 6.12.5, 6.12.6, 6.12.7, 6.12.8, 6.12.9

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External links
https://git.kernel.org/stable/c/98b1e3b27734139c76295754b6c317aa4df6d32e
https://git.kernel.org/stable/c/bcf430d3bb5525fc89a92a0c451c725ba1aa4306
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.10

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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.