Description
A flaw was found in the RPC library APIs of libvirt. The RPC server deserialization code allocates memory for arrays before the non-negative length check is performed by the C API entry points. Passing a negative length to the g_new0 function results in a crash due to the negative length being treated as a huge positive number. This flaw allows a local, unprivileged user to perform a denial of service attack by causing the libvirt daemon to crash.
References10
- access.redhat.com/errata/RHSA-2024:2560
- access.redhat.com/errata/RHSA-2024:3253
- access.redhat.com/security/cve/CVE-2024-2494
- bugzilla.redhat.com/show_bug.cgi?id=2270115
- lists.libvirt.org/archives/list/[email protected]/thread/…
- access.redhat.com/errata/RHSA-2024:2560
- access.redhat.com/errata/RHSA-2024:3253
- access.redhat.com/security/cve/CVE-2024-2494
- bugzilla.redhat.com/show_bug.cgi?id=2270115
- lists.debian.org/debian-lts-announce/2024/04/msg00000.html
Metrics
- CVSS 3.1
-
6.2
MEDIUM
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 31 · as of 5 November 2026
- CWE
- CWE-789
Could this be exploited in your environment?
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