Red Hat Security Advisory: virt:rhel and virt-devel:rhel security update
This Red Hat security advisory addresses multiple vulnerabilities in the virt:rhel and virt-devel:rhel modules used for Kernel-based Virtual Machine (KVM) virtualization on Red Hat Enterprise Linux 8. The issues include a double free vulnerability in QEMU's virtio DMA handling (CVE-2024-3446), a denial of service caused by improper synchronization in the QEMU NBD server during socket closure (CVE-2024-7409), and improper certificate validation in the libnbd NBD server (CVE-2024-7383). These vulnerabilities have been rated with moderate severity by Red Hat. Updates are available to remediate these issues for various Red Hat Enterprise Linux 8 architectures and related modules. No known exploits in the wild have been reported at this time.
AI Analysis
Technical Summary
The advisory covers three security fixes for Red Hat Enterprise Linux 8's virtualization components. CVE-2024-3446 is a double free vulnerability in QEMU's virtio DMA reentrancy handling, which could lead to memory corruption. CVE-2024-7409 involves a denial of service vulnerability due to improper synchronization in the QEMU NBD server during socket closure. CVE-2024-7383 is an issue in libnbd where the NBD server improperly validates certificates, potentially weakening authentication. These vulnerabilities affect user-space components that manage and interact with virtual machines using KVM. Red Hat has released updated packages to address these issues across multiple architectures and related modules. The advisory does not provide CVSS scores but classifies the impact as moderate. No exploits are currently known in the wild.
Potential Impact
Successful exploitation of CVE-2024-3446 could lead to memory corruption via a double free condition in QEMU's virtio DMA, potentially impacting the stability or security of virtual machines. CVE-2024-7409 could allow denial of service by causing improper synchronization in the QEMU NBD server during socket closure, disrupting virtual machine storage access. CVE-2024-7383 may allow bypass of certificate validation in the NBD server, weakening authentication and potentially enabling unauthorized access. The overall impact is rated moderate by Red Hat, indicating these vulnerabilities could affect system reliability and security but are not classified as critical.
Mitigation Recommendations
Red Hat has released updated packages for the virt:rhel and virt-devel:rhel modules that address these vulnerabilities. Users of Red Hat Enterprise Linux 8 and related CodeReady Linux Builder modules should apply the security updates as detailed in Red Hat advisory RHSA-2024:6964 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor advisory. Patch status is confirmed as fixed in the updated packages. There are no known exploits in the wild, and applying the official updates will remediate the vulnerabilities.
Red Hat Security Advisory: virt:rhel and virt-devel:rhel security update
Description
This Red Hat security advisory addresses multiple vulnerabilities in the virt:rhel and virt-devel:rhel modules used for Kernel-based Virtual Machine (KVM) virtualization on Red Hat Enterprise Linux 8. The issues include a double free vulnerability in QEMU's virtio DMA handling (CVE-2024-3446), a denial of service caused by improper synchronization in the QEMU NBD server during socket closure (CVE-2024-7409), and improper certificate validation in the libnbd NBD server (CVE-2024-7383). These vulnerabilities have been rated with moderate severity by Red Hat. Updates are available to remediate these issues for various Red Hat Enterprise Linux 8 architectures and related modules. No known exploits in the wild have been reported at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The advisory covers three security fixes for Red Hat Enterprise Linux 8's virtualization components. CVE-2024-3446 is a double free vulnerability in QEMU's virtio DMA reentrancy handling, which could lead to memory corruption. CVE-2024-7409 involves a denial of service vulnerability due to improper synchronization in the QEMU NBD server during socket closure. CVE-2024-7383 is an issue in libnbd where the NBD server improperly validates certificates, potentially weakening authentication. These vulnerabilities affect user-space components that manage and interact with virtual machines using KVM. Red Hat has released updated packages to address these issues across multiple architectures and related modules. The advisory does not provide CVSS scores but classifies the impact as moderate. No exploits are currently known in the wild.
Potential Impact
Successful exploitation of CVE-2024-3446 could lead to memory corruption via a double free condition in QEMU's virtio DMA, potentially impacting the stability or security of virtual machines. CVE-2024-7409 could allow denial of service by causing improper synchronization in the QEMU NBD server during socket closure, disrupting virtual machine storage access. CVE-2024-7383 may allow bypass of certificate validation in the NBD server, weakening authentication and potentially enabling unauthorized access. The overall impact is rated moderate by Red Hat, indicating these vulnerabilities could affect system reliability and security but are not classified as critical.
Mitigation Recommendations
Red Hat has released updated packages for the virt:rhel and virt-devel:rhel modules that address these vulnerabilities. Users of Red Hat Enterprise Linux 8 and related CodeReady Linux Builder modules should apply the security updates as detailed in Red Hat advisory RHSA-2024:6964 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor advisory. Patch status is confirmed as fixed in the updated packages. There are no known exploits in the wild, and applying the official updates will remediate the vulnerabilities.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2024:6964
- Cve Count
- 3
- Additional Cves
- ["CVE-2024-7383","CVE-2024-7409"]
- Cvss Version
- null
Threat ID: 6a419cbc27e9c79719abf7c2
Added to database: 06/28/2026, 22:14:20 UTC
Last enriched: 06/28/2026, 22:37:38 UTC
Last updated: 07/03/2026, 08:51:19 UTC
Views: 9
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