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CVE-2024-2494

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2024-3253-03
Posted May 23, 2024
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2024-3253-03 - An update for the virt:rhel and virt-devel:rhel modules is now available for Red Hat Enterprise Linux 8.

tags | advisory
systems | linux, redhat
advisories | CVE-2024-2494
SHA-256 | 38a2a5b173ba7eada0726c5a94f281ec04fe22571ae7d5decf1b90b21f3c12b0
Ubuntu Security Notice USN-6734-2
Posted Apr 29, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6734-2 - USN-6734-1 fixed vulnerabilities in libvirt. This update provides the corresponding updates for Ubuntu 24.04 LTS. Alexander Kuznetsov discovered that libvirt incorrectly handled certain API calls. An attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. It was discovered that libvirt incorrectly handled certain RPC library API calls. An attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service.

tags | advisory, denial of service, vulnerability
systems | linux, ubuntu
advisories | CVE-2024-1441, CVE-2024-2494
SHA-256 | de9bb025a2d32f7b6bc492105033df1d20ac65f5466d9541f8a4b62ce26e46e5
Ubuntu Security Notice USN-6734-1
Posted Apr 16, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6734-1 - Alexander Kuznetsov discovered that libvirt incorrectly handled certain API calls. An attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. It was discovered that libvirt incorrectly handled certain RPC library API calls. An attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. It was discovered that libvirt incorrectly handled detaching certain host interfaces. An attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2024-1441, CVE-2024-2494, CVE-2024-2496
SHA-256 | a88afa3df653eb731bbf80eb700a1b7f14ed5a300bee125d81dbf9af2465df19
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