CVE-2024-0340: Kernel: information disclosure in vhost/vhost.c:vhost_new_msg()
First published: Tue Jan 09 2024(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.4 | 6.4 |
| Linux Kernel | <6.4 | |
| Linux Kernel | =6.4-rc1 | |
| Linux Kernel | =6.4-rc2 | |
| Linux Kernel | =6.4-rc3 | |
| Linux Kernel | =6.4-rc4 | |
| Linux Kernel | =6.4-rc5 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.21-1 | |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Software Stack | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Virtual Appliance | <=ISVG 10.0.2 | |
| IBM Security Verify Governance Identity Manager Container | <=ISVG 10.0.2 |
Remedy
https://lore.kernel.org/lkml/5kn47peabxjrptkqa6dwtyus35ahf4pcj4qm4pumse33kxqpjw@mec4se5relrc/T/
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2257406
- https://access.redhat.com/security/cve/CVE-2024-0340
- https://lore.kernel.org/lkml/5kn47peabxjrptkqa6dwtyus35ahf4pcj4qm4pumse33kxqpjw@mec4se5relrc/T/
- https://access.redhat.com/errata/RHSA-2024:3618
- https://access.redhat.com/errata/RHSA-2024:3627
- https://launchpad.net/bugs/cve/CVE-2024-0340
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2258356
- https://access.redhat.com/errata/RHSA-2024:9315
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-0340
- https://nvd.nist.gov/vuln/detail/CVE-2024-0340
- https://security-tracker.debian.org/tracker/CVE-2024-0340
- https://ubuntu.com/security/CVE-2024-0340
- https://git.kernel.org/linus/4d8df0f5f79f747d75a7d356d9b9ea40a4e4c8a9
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2024-0340?
CVE-2024-0340 is classified as a high severity vulnerability due to improper memory initialization in the Linux kernel.
How do I fix CVE-2024-0340?
To mitigate CVE-2024-0340, update to a patched version of the kernel, specifically versions 5.10.223-1, 5.10.226-1, 6.1.123-1, or any later versions.
Which specific versions of the Linux kernel are affected by CVE-2024-0340?
CVE-2024-0340 affects versions of the Linux kernel up to 6.4 and includes release candidates up to 6.4-rc5.
Can CVE-2024-0340 be exploited remotely?
CVE-2024-0340 is a local privilege escalation vulnerability, meaning it cannot be exploited remotely.
Who is affected by CVE-2024-0340?
Local users with access to a vulnerable system running the affected versions of the Linux kernel are at risk due to CVE-2024-0340.
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