CVE-2024-0340: linux kernel Information Disclosure

Description

A vulnerability was found in vhost_new_msg in drivers/vhost/vhost.c in the Linux kernel, which does not properly initialize memory in messages passed between virtual guests and the host operating system in the vhost/vhost.c:vhost_new_msg() function. This issue can allow local privileged users to read some kernel memory contents when reading from the /dev/vhost-net device file.

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CVSS v3.1 Score

4.4

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-200 CWE-200

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 6.4
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://bugzilla.redhat.com/show_bug.cgi?id=2257406 https://lore.kernel.org/lkml/5kn47peabxjrptkqa6dwtyus35ahf4pcj4qm4pumse33kxqpjw@mec4se5relrc/T/ https://bugzilla.redhat.com/show_bug.cgi?id=2257406 https://lore.kernel.org/lkml/5kn47peabxjrptkqa6dwtyus35ahf4pcj4qm4pumse33kxqpjw@mec4se5relrc/T/

Other References

https://access.redhat.com/errata/RHSA-2024:3618 https://access.redhat.com/errata/RHSA-2024:3627 https://access.redhat.com/errata/RHSA-2024:9315 https://access.redhat.com/errata/RHSA-2025:7526 https://access.redhat.com/security/cve/CVE-2024-0340 https://access.redhat.com/errata/RHSA-2024:3618 https://access.redhat.com/errata/RHSA-2024:3627 https://access.redhat.com/security/cve/CVE-2024-0340 https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

Frequently Asked Questions

What is CVE-2024-0340? +

A vulnerability was found in vhost_new_msg in drivers/vhost/vhost.c in the Linux kernel, which does not properly initialize memory in messages passed between virtual guests and the host operating system in the vhost/vhost.c:vhost_new_msg() function. This issue can allow local privileged users to read some kernel memory contents when reading from the /dev/vhost-net device file. It has a CVSS v3.1 base score of 4.4 (MEDIUM).

How severe is CVE-2024-0340? +

CVE-2024-0340 has a CVSS v3.1 score of 4.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-0340? +

CVE-2024-0340 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-0340? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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