CVE-2025-38560
What it is
In the Linux kernel, the following vulnerability has been resolved: x86/sev: Evict cache lines during SNP memory validation An SNP cache coherency vulnerability requires a cache line eviction mitigation when validating memory after a page state change to private. The specific mitigation is to touch the first and last byte of each 4K page that is being validated. There is no need to perform the mitigation when performing a page state change to shared and rescinding validation. CPUID bit Fn8000001F_EBX[31] defines the COHERENCY_SFW_NO CPUID bit that, when set, indicates that the software mitigation for this vulnerability is not needed. Implement the mitigation and invoke it when validating memory (making it private) and the COHERENCY_SFW_NO bit is not set, indicating the SNP guest is vulnerable.
At a glance
- Exploitability
- Can be exploited locally on the machine without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 9.3 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Record status
- Modified
Affected
- Linux Kernel < 6.1.148
- Linux Kernel < 6.6.102
- Linux Kernel < 6.12.42
- Linux Kernel < 6.15.10
- Linux Kernel < 6.16.1
- Linux Kernel 6.17
- Debian Linux 11.0
Attack profile CVSS 3.1 · 9.3
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2025-38560.md and follow it. Check whether this project is affected by CVE-2025-38560. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/1fb873971e23c35c53823c62809a474a92bc3022
- https://git.kernel.org/stable/c/1fec416c03d0a64cc21aa04ce4aa14254b017e6a
- https://git.kernel.org/stable/c/7b306dfa326f70114312b320d083b21fa9481e1e
- https://git.kernel.org/stable/c/a762a4c8d9e768b538b3cc60615361a8cf377de8
- https://git.kernel.org/stable/c/aed15fc08f15dbb15822b2a0b653f67e76aa0fdf
- https://git.kernel.org/stable/c/f92af52e6dbd8d066d77beba451e0230482dc45b
References
- https://git.kernel.org/stable/c/1fb873971e23c35c53823c62809a474a92bc3022
- https://git.kernel.org/stable/c/1fec416c03d0a64cc21aa04ce4aa14254b017e6a
- https://git.kernel.org/stable/c/7b306dfa326f70114312b320d083b21fa9481e1e
- https://git.kernel.org/stable/c/a762a4c8d9e768b538b3cc60615361a8cf377de8
- https://git.kernel.org/stable/c/aed15fc08f15dbb15822b2a0b653f67e76aa0fdf
- https://git.kernel.org/stable/c/f92af52e6dbd8d066d77beba451e0230482dc45b
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html