#VU106958 NULL pointer dereference in Linux kernel - CVE-2025-21998

Vulnerability identifier: #VU106958

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-2025-21998

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 qcom_uefisecapp_probe() function in drivers/firmware/qcom/qcom_qseecom_uefisecapp.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.13, 6.13.1, 6.13.2, 6.13.3, 6.13.4, 6.13.5, 6.13.6, 6.13.7, 6.13.8

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External links
https://git.kernel.org/stable/c/c4e37b381a7a243c298a4858fc0a5a74e737c79a
https://git.kernel.org/stable/c/da8d493a80993972c427002684d0742560f3be4a
https://git.kernel.org/stable/c/f15a2b96a0e41c426c63a932d0e63cde7b9784aa
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.9

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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.