CVE-2024-2494: Libvirt: negative g_new0 length can lead to unbounded memory allocation
First published: Mon Mar 18 2024(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ubuntu/libvirt | <6.0.0-0ubuntu8.19 | 6.0.0-0ubuntu8.19 |
| ubuntu/libvirt | <8.0.0-1ubuntu7.10 | 8.0.0-1ubuntu7.10 |
| ubuntu/libvirt | <9.6.0-1ubuntu1.1 | 9.6.0-1ubuntu1.1 |
| ubuntu/libvirt | <10.0.0-2ubuntu8.1 | 10.0.0-2ubuntu8.1 |
| debian/libvirt | <=5.0.0-4+deb10u1<=7.0.0-3+deb11u2<=9.0.0-4 | 5.0.0-4+deb10u2 10.2.0-1 10.3.0-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://www.cve.org/CVERecord?id=CVE-2024-2494
- https://ubuntu.com/security/notices/USN-6734-1
- https://ubuntu.com/security/notices/USN-6734-2
- https://nvd.nist.gov/vuln/detail/CVE-2024-2494
- https://launchpad.net/bugs/cve/CVE-2024-2494
- https://security-tracker.debian.org/tracker/CVE-2024-2494
- https://gitlab.com/libvirt/libvirt/-/commit/8a3f8d957507c1f8223fdcf25a3ff885b15557f2
- https://ubuntu.com/security/CVE-2024-2494
- https://access.redhat.com/errata/RHSA-2024:2560
- 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://access.redhat.com/errata/RHSA-2024:3253
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2270649
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2270115#c3
- https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/
- https://monopolygo.io/
- https://security.netapp.com/advisory/ntap-20240517-0009/
- agent/weakness
- agent/title
- agent/type
- agent/first-publish-date
- agent/severity
- collector/epss-latest
- source/FIRST
- agent/epss
- agent/remedy
- agent/description
- agent/author
- collector/usn-cve
- source/Ubuntu
- agent/software-canonical-lookup
- collector/nvd-cve
- source/NVD
- collector/launchpad-cve
- source/Launchpad
- agent/event
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/references
- agent/tags
- collector/nvd-api
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2024-2494
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/trending
- package-manager/ubuntu
- package-manager/debian