Use-after-free in Linux kernel rapidio devices driver



| Updated: 2025-05-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2025-21934
CWE-ID CWE-416
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU106606

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-21934

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the rio_mport_add_riodev() function in drivers/rapidio/devices/rio_mport_cdev.c. A local user can escalate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.13 - 6.13.6

CPE2.3 External links

https://git.kernel.org/stable/c/22e4977141dfc6d109bf29b495bf2187b4250990
https://git.kernel.org/stable/c/2537f01d57f08c527e40bbb5862aa6ff43344898
https://git.kernel.org/stable/c/88ddad53e4cfb6de861c6d4fb7b25427f46baed5
https://git.kernel.org/stable/c/a5f5e520e8fbc6294020ff8afa36f684d92c6e6a
https://git.kernel.org/stable/c/b2ef51c74b0171fde7eb69b6152d3d2f743ef269
https://git.kernel.org/stable/c/cdd9f58f7fe41a55fae4305ea51fc234769fd466
https://git.kernel.org/stable/c/d4ec862ce80f64db923a1d942b5d11cf6fc87d36
https://git.kernel.org/stable/c/f0aa4ee1cbbf7789907e5a3f6810de01c146c211
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.7


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.



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