CVE-2024-2494
The RPC server deserialization code allocates memory for arrays before the non-negative length check is performed by the C API entry points.
Does this matter?
Lower severity and a low EPSS score (0.37%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.2 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.37% probability · 30th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-789
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2024:2560
- https://access.redhat.com/errata/RHSA-2024:3253
- https://access.redhat.com/security/cve/CVE-2024-2494
- https://bugzilla.redhat.com/show_bug.cgi?id=2270115
- https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/BKRQXPLPC6B7FLHJXSBQYW7HNDEBW6RJ/
- https://access.redhat.com/errata/RHSA-2024:2560
- https://access.redhat.com/errata/RHSA-2024:3253
- https://access.redhat.com/security/cve/CVE-2024-2494
- https://bugzilla.redhat.com/show_bug.cgi?id=2270115
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
- https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/BKRQXPLPC6B7FLHJXSBQYW7HNDEBW6RJ/
- https://security.netapp.com/advisory/ntap-20240517-0009/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.