- Vulnerability/
- CVE-2025-21831
CVE-2025-21831: PCI: Avoid putting some root ports into D3 on TUXEDO Sirius Gen1
First published: Thu Mar 06 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: PCI: Avoid putting some root ports into D3 on TUXEDO Sirius Gen1 commit 9d26d3a8f1b0 ("PCI: Put PCIe ports into D3 during suspend") sets the policy that all PCIe ports are allowed to use D3. When the system is suspended if the port is not power manageable by the platform and won't be used for wakeup via a PME this sets up the policy for these ports to go into D3hot. This policy generally makes sense from an OSPM perspective but it leads to problems with wakeup from suspend on the TUXEDO Sirius 16 Gen 1 with a specific old BIOS. This manifests as a system hang. On the affected Device + BIOS combination, add a quirk for the root port of the problematic controller to ensure that these root ports are not put into D3hot at suspend. This patch is based on https://lore.kernel.org/linux-pci/20230708214457.1229-2-mario.limonciello@amd.com but with the added condition both in the documentation and in the code to apply only to the TUXEDO Sirius 16 Gen 1 with a specific old BIOS and only the affected root ports.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| debian/linux | <=5.10.223-1<=5.10.234-1<=6.1.129-1<=6.1.133-1 | 6.12.22-1 |
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Reference Links
- https://git.kernel.org/stable/c/5ee3dd6e59b834e4d66e8b16fc684749ee40a257
- https://git.kernel.org/stable/c/8852e056e297df1d8635ee7504e780d3184e45d0
- https://git.kernel.org/stable/c/a78dfe50fffe6058afed2bb04c50c2c9a16664ee
- https://git.kernel.org/stable/c/b1049f2d68693c80a576c4578d96774a68df2bad
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21831
- https://nvd.nist.gov/vuln/detail/CVE-2025-21831
- https://launchpad.net/bugs/cve/CVE-2025-21831
- https://security-tracker.debian.org/tracker/CVE-2025-21831
- https://ubuntu.com/security/CVE-2025-21831
- https://git.kernel.org/linus/b1049f2d68693c80a576c4578d96774a68df2bad
Frequently Asked Questions
What is the severity of CVE-2025-21831?
CVE-2025-21831 has a moderate severity impact related to PCIe root ports in the Linux kernel.
How do I fix CVE-2025-21831?
To fix CVE-2025-21831, update your Linux kernel to the latest stable version that includes the relevant patches.
What systems are affected by CVE-2025-21831?
CVE-2025-21831 affects systems running the Linux kernel that have specific PCIe configurations.
What are the potential exploits of CVE-2025-21831?
Exploiting CVE-2025-21831 could lead to improper power management of PCIe ports, affecting system stability.
Is CVE-2025-21831 a local or remote vulnerability?
CVE-2025-21831 is considered a local vulnerability, requiring local access to the affected system.
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