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.

Classification

CVE ID: CVE-2024-4418

Affected Products

Vendor: , Red Hat, Red Hat, Red Hat, Red Hat, Red Hat, Red Hat, Red Hat

Product: , Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.2 Extended Update Support, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8 Advanced Virtualization

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.17% (probability of being exploited)

EPSS Percentile: 39.57% (scored less or equal to compared to others)

EPSS Date: 2025-04-20 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: none

SSVC Technical Impact: partial

SSVC Automatable: false

References

https://nvd.nist.gov/vuln/detail/CVE-2024-4418
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

Timeline