CVE-2025-37885

HIGH EPSS 16.3%
Published May 9, 20251y ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published May 9, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
16.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥4.4  –  <5.10.237
linuxlinux_kernel*≥5.11  –  <5.15.181
linuxlinux_kernel*≥5.16  –  <6.1.136
linuxlinux_kernel*≥6.2  –  <6.6.89
linuxlinux_kernel*≥6.7  –  <6.12.26
linuxlinux_kernel*≥6.13  –  <6.14.5
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
debiandebian_linux11.0any

References 9

  • git.kernel.org https://git.kernel.org/stable/c/023816bd5fa46fab94d1e7917fe131b79ed1fb41
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/116c7d35b8f72eac383b9fd371d7c1a8ffc2968b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3066ec21d1a33896125747f68638725f456308db
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3481fd96d801715942b6f69fe251133128156f30
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9bcac97dc42d2f4da8229d18feb0fe2b1ce523a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b5de7ac74f69603ad803c524b840bffd36368fc3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e5f2dee9f7fcd2ff4b97869f3c66a0d89c167769
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
    Mailing ListThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/023816bd5fa46fab94d1e7917fe131b79ed1fb41
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/116c7d35b8f72eac383b9fd371d7c1a8ffc2968b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3066ec21d1a33896125747f68638725f456308db
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3481fd96d801715942b6f69fe251133128156f30
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9bcac97dc42d2f4da8229d18feb0fe2b1ce523a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b5de7ac74f69603ad803c524b840bffd36368fc3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e5f2dee9f7fcd2ff4b97869f3c66a0d89c167769
    Patch