This CVE exists because of an incomplete fix for CVE-2021-3750. More specifically, the qemu-kvm package as released for Red Hat Enterprise Linux 9.1 via RHSA-2022:7967 included a version of qemu-kvm that was actually missing the fix for CVE-2021-3750.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Qemu | Qemu | - (including) | - (including) |
| Red Hat Enterprise Linux 9 | RedHat | qemu-kvm-17:8.0.0-16.el9_3 | * |
| Qemu | Ubuntu | bionic | * |
| Qemu | Ubuntu | trusty | * |
| Qemu | Ubuntu | xenial | * |