CVE-2024-26327: Buffer Overflow
First published: Mon Feb 19 2024(Updated: )
An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c mishandles the situation where a guest writes NumVFs greater than TotalVFs, leading to a buffer overflow in VF implementations.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/qemu | 1:5.2+dfsg-11+deb11u3 1:5.2+dfsg-11+deb11u2 1:7.2+dfsg-7+deb12u7 1:9.0.2+ds-2 1:9.1.0+ds-3 | |
| redhat/qemu-kvm | <9.0.0 | 9.0.0 |
| QEMU | >=7.1.0<=8.2.1 |
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Reference Links
- https://lore.kernel.org/all/20240214-reuse-v4-5-89ad093a07f4%40daynix.com/
- https://security.netapp.com/advisory/ntap-20240419-0010/
- https://lore.kernel.org/all/20240214-reuse-v4-5-89ad093a07f4@daynix.com/
- https://launchpad.net/bugs/cve/CVE-2024-26327
- https://gitlab.com/qemu-project/qemu/-/commit/7c0fa8dff811b5648964630a1334c3bb97e1e1c6
- https://gitlab.com/qemu-project/qemu/-/commit/6081b4243cd64dff1b2cf5b0c215c71e9d7e753b
- https://gitlab.com/qemu-project/qemu/-/commit/313e746958967a4b941ad4bbb80726727318edfa
- https://security-tracker.debian.org/tracker/CVE-2024-26327
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26327
- https://nvd.nist.gov/vuln/detail/CVE-2024-26327
- https://ubuntu.com/security/CVE-2024-26327
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2264845
- https://access.redhat.com/errata/RHSA-2024:9136
- https://bugzilla.redhat.com/show_bug.cgi?id=2264844
Frequently Asked Questions
What is the severity of CVE-2024-26327?
CVE-2024-26327 has a high severity level due to the potential for buffer overflow vulnerabilities.
How do I fix CVE-2024-26327?
To fix CVE-2024-26327, upgrade to the patched versions of QEMU as specified by your distribution.
What systems are affected by CVE-2024-26327?
CVE-2024-26327 affects QEMU versions 7.1.0 through 8.2.1 and related implementations like QEMU-KVM.
What type of vulnerability is CVE-2024-26327?
CVE-2024-26327 is a buffer overflow vulnerability resulting from improper handling of virtual function configuration.
Is CVE-2024-26327 exploitable remotely?
Yes, CVE-2024-26327 is considered potentially exploitable in a network context, depending on the configuration of the virtual environment.
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