Use-after-free vulnerability in the sofree function in slirp/socket.c in QEMU (aka Quick Emulator) allows attackers to cause a denial of service (QEMU instance crash) by leveraging failure to properly clear ifq_so from pending packets.
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 Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.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 | * | 2.10.1 (including) |
| Red Hat Enterprise Linux 7 | RedHat | qemu-kvm-10:1.5.3-156.el7 | * |
| Red Hat OpenStack Platform 10.0 (Newton) | RedHat | qemu-kvm-rhev-10:2.10.0-21.el7 | * |
| Red Hat OpenStack Platform 11.0 (Ocata) | RedHat | qemu-kvm-rhev-10:2.10.0-21.el7 | * |
| Red Hat OpenStack Platform 12.0 (Pike) | RedHat | qemu-kvm-rhev-10:2.10.0-21.el7 | * |
| Red Hat OpenStack Platform 8.0 (Liberty) | RedHat | qemu-kvm-rhev-10:2.10.0-21.el7 | * |
| Red Hat OpenStack Platform 9.0 (Mitaka) | RedHat | qemu-kvm-rhev-10:2.10.0-21.el7 | * |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | RedHat | qemu-kvm-rhev-10:2.10.0-21.el7 | * |
| Qemu | Ubuntu | zesty | * |