Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Tear down vGIC on failed vCPU creation If kvm_arch_vcpu_create() fails to share the vCPU page with the hypervisor, we propagate the error back to the ioctl but leave the vGIC vCPU data initialised. Note only does this leak the corresponding memory when the vCPU is destroyed but it can also lead to use-after-free if the redistributor device handling tries to walk into the vCPU. Add the missing cleanup to kvm_arch_vcpu_create(), ensuring that the vGIC vCPU structures are destroyed on error.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 6.1.135 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/07476e0d932afc53c05468076393ac35d0b4999ePatch
- https://git.kernel.org/stable/c/2480326eba8ae9ccc5e4c3c2dc8d407db68e3c52Patch
- https://git.kernel.org/stable/c/250f25367b58d8c65a1b060a2dda037eea09a672Patch
- https://git.kernel.org/stable/c/5085e02362b9948f82fceca979b8f8e12acb1cc5Patch
- https://git.kernel.org/stable/c/c322789613407647a05ff5c451a7bf545fb34e73Patch
- https://git.kernel.org/stable/c/f1e9087abaeedec9bf2894a282ee4f0d8383f299Patch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.htmlMailing List
FAQ
What is CVE-2025-37849?
CVE-2025-37849 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Tear down vGIC on failed vCPU creation If kvm_arch_vcpu_create() fails to share the vCPU page with the hypervisor, we ...
How severe is CVE-2025-37849?
CVE-2025-37849 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-37849?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.