#VU103031 NULL pointer dereference in Linux kernel - CVE-2025-21649
Vulnerability identifier: #VU103031
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-2025-21649
CWE-ID:
CWE-476
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 NULL pointer dereference within the hclge_ptp_set_tx_info() function in drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_ptp.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
External links
https://git.kernel.org/stable/c/9741e72b2286de8b38de9db685588ac421a95c87
https://git.kernel.org/stable/c/f19ab3ef96d9626e5f1bdc56d3574c355e83d623
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.10
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.
