A NULL pointer dereference flaw was found in the udevConnectListAllInterfaces() function in libvirt. This issue can occur when detaching a host interface while at the same time collecting the list of interfaces via virConnectListAllInterfaces API. This flaw could be used to perform a denial of service attack by causing the libvirt daemon to crash.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libvirt | Redhat | * | 9.8.0 (excluding) |
| Red Hat Enterprise Linux 9 | RedHat | libvirt-0:10.0.0-6.el9_4 | * |
| Libvirt | Ubuntu | esm-infra/focal | * |
| Libvirt | Ubuntu | focal | * |
| Libvirt | Ubuntu | jammy | * |
| Libvirt | Ubuntu | mantic | * |
| Libvirt | Ubuntu | trusty/esm | * |
| Libvirt | Ubuntu | upstream | * |
Potential Mitigations
References
- https://access.redhat.com/errata/RHSA-2024:2236
- https://access.redhat.com/security/cve/CVE-2024-2496
- https://bugzilla.redhat.com/show_bug.cgi?id=2269672
- https://access.redhat.com/errata/RHSA-2024:2236
- https://access.redhat.com/security/cve/CVE-2024-2496
- https://bugzilla.redhat.com/show_bug.cgi?id=2269672
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html