Vulnerability Description
A heap buffer overflow was found in the floppy disk emulator of QEMU up to 6.0.0 (including). It could occur in fdctrl_transfer_handler() in hw/block/fdc.c while processing DMA read data transfers from the floppy drive to the guest system. A privileged guest user could use this flaw to crash the QEMU process on the host resulting in DoS scenario, or potential information leakage from the host memory.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | <= 6.0.0 |
| Debian | Debian Linux | 10.0 |
| Redhat | Enterprise Linux | 8.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1951118ExploitIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210528-0005/Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1951118ExploitIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210528-0005/Third Party Advisory
FAQ
What is CVE-2021-3507?
CVE-2021-3507 is a vulnerability with a CVSS score of 6.1 (MEDIUM). A heap buffer overflow was found in the floppy disk emulator of QEMU up to 6.0.0 (including). It could occur in fdctrl_transfer_handler() in hw/block/fdc.c while processing DMA read data transfers fro...
How severe is CVE-2021-3507?
CVE-2021-3507 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3507?
Check the references section above for vendor advisories and patch information. Affected products include: Qemu Qemu, Debian Debian Linux, Redhat Enterprise Linux.