CVE-2024-4418
Libvirt: stack use-after-free in virnetclientioeventloop()
At a glance
- Severity
- MEDIUM 6.2
- EPSS
- EPSS 0.49 % · percentile 42 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Deferred
Description
A race condition leading to a stack use-after-free flaw was found in libvirt. Due to a bad assumption in the virNetClientIOEventLoop() method, the `data` pointer to a stack-allocated virNetClientIOEventData structure ended up being used in the virNetClientIOEventFD callback while the data pointer's stack frame was concurrently being "freed" when returning from virNetClientIOEventLoop(). The 'virtproxyd' daemon can be used to trigger requests. If libvirt is configured with fine-grained access control, this issue, in theory, allows a user to escape their otherwise limited access. This flaw allows a local, unprivileged user to access virtproxyd without authenticating. Remote users would need to authenticate before they could access it.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | redhat |
| CVSS 3.1 | MEDIUM 6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · secalert@redhat.com (Secondary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2024-44042
- GCVE · GCVE-0-2024-4418
Affected products
| Product | Versions |
|---|---|
| libvirt | affected 0 < 10.4.0 |
| Red Hat · Red Hat Enterprise Linux 8 | unaffected 8100020240606142719.489197e6 < * |
| Red Hat · Red Hat Enterprise Linux 8 | unaffected 8100020240606142719.489197e6 < * |
| Red Hat · Red Hat Enterprise Linux 9 | unaffected 0:10.0.0-6.6.el9_4 < * |
| Red Hat · Red Hat Enterprise Linux 9.2 Extended Update Support | unaffected 0:9.0.0-10.7.el9_2 < * |
| Red Hat · Red Hat Enterprise Linux 6 | |
| Red Hat · Red Hat Enterprise Linux 7 | |
| Red Hat · Red Hat Enterprise Linux 8 Advanced Virtualization |
References
- https://access.redhat.com/errata/RHSA-2024:4351
- https://access.redhat.com/errata/RHSA-2024:4432
- https://access.redhat.com/errata/RHSA-2024:4757
- https://access.redhat.com/security/cve/CVE-2024-4418
- https://bugzilla.redhat.com/show_bug.cgi?id=2278616
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4IE44UIIC3QWBFRB4EUSFNLJBU6JLNSD/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Q4ZQBAJVHIZMCZNTRPUW3ZKXRKLXRQZU/
- https://security.netapp.com/advisory/ntap-20250411-0002/
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |