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Vulnerability · Published Jul 5, 2024 · Assigned by redhat

CVE-2024-6505Qemu-kvm: virtio-net: queue index out-of-bounds access in software rss

Medium 6.8

In plain English

A medium-severity out-of-bounds read in qemu. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.8Medium
Exploit odds (30 days)0.7%top 48.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in the virtio-net device in QEMU. When enabling the RSS feature on the virtio-net network card, the indirections_table data within RSS becomes controllable. Setting excessively large values may cause an index out-of-bounds issue, potentially resulting in heap overflow access. This flaw allows a privileged user in the guest to crash the QEMU process on the host.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12qemu1:7.2+dfsg-7+deb12u8DEBIAN-CVE-2024-6505
Debian:13qemu1:9.0.2+ds-3DEBIAN-CVE-2024-6505
Debian:14qemu1:9.0.2+ds-3DEBIAN-CVE-2024-6505
Ubuntu:22.04:LTSqemu1:6.2+dfsg-2ubuntu6.27USN-7744-1
Ubuntu:22.04:LTSqemu1:6.2+dfsg-2ubuntu6.27UBUNTU-CVE-2024-6505
Ubuntu:24.04:LTSqemu1:8.2.2+ds-0ubuntu1.10USN-7744-1
Ubuntu:24.04:LTSqemu1:8.2.2+ds-0ubuntu1.10UBUNTU-CVE-2024-6505

Affected products (as reported)

VendorProductVersions
qemu 5.1.0 – before 9.1.0
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization see references
Red Hat Red Hat Enterprise Linux 9 see references

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

References