Answer in brief
CVE-2025-37885 records a High severity (CVSS 8.8) vulnerability in KVM: x86: Reset IRTE to host control if *new* route isn't postable. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=efc644048ecde54f016011fe10110addd0de348f <e5f2dee9f7fcd2ff4b97869f3c66a0d89c167769 || >=efc644048ecde54f016011fe10110addd0de348f <116c7d35b8f72eac383b9fd371d7c1a8ffc2968b || >=efc644048ecde54f016011fe10110addd0de348f <023816bd5fa46fab94d1e7917fe131b79ed1fb41 || >=efc644048ecde54f016011fe10110addd0de348f <3481fd96d801715942b6f69fe251133128156f30 || >=efc644048ecde54f016011fe10110addd0de348f <b5de7ac74f69603ad803c524b840bffd36368fc3 || >=efc644048ecde54f016011fe10110addd0de348f <3066ec21d1a33896125747f68638725f456308db || >=efc644048ecde54f016011fe10110addd0de348f <9bcac97dc42d2f4da8229d18feb0fe2b1ce523a2 | e5f2dee9f7fcd2ff4b97869f3c66a0d89c167769, 116c7d35b8f72eac383b9fd371d7c1a8ffc2968b, 023816bd5fa46fab94d1e7917fe131b79ed1fb41, 3481fd96d801715942b6f69fe251133128156f30, b5de7ac74f69603ad803c524b840bffd36368fc3, 3066ec21d1a33896125747f68638725f456308db, 9bcac97dc42d2f4da8229d18feb0fe2b1ce523a2 |
| Linux/Linuxgeneric | 4.4 | Not reported |
Published upstream
May 9, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Reset IRTE to host control if *new* route isn't postable Restore an IRTE back to host control (remapped or posted MSI mode) if the *new* GSI route prevents posting the IRQ directly to a vCPU, regardless of the GSI routing type. Updating the IRTE if and only if the new GSI is an MSI results in KVM leaving an IRTE posting to a vCPU. The dangling IRTE can result in interrupts being incorrectly delivered to the guest, and in the worst case scenario can result in use-after-free, e.g. if the VM is torn down, but the underlying host IRQ isn't freed.
Quoted source text, attributed separately from HOL analysis.