Use-after-free in Linux kernel - CVE-2025-21934
Published: April 2, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU106606
CSH Severity: Low
CVSS v4.0: 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
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability 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.
How to mitigate CVE-2025-21934
Install update from vendor's website.
Sources
- 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