Out-of-Bounds The advisory has been revoked - it doesn't affect any version of package qemu (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1404-QEMU-1293033
- published14 May 2021
- disclosed6 May 2021
Introduced: 6 May 2021
CVE-2021-3507 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:14.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2021-3507
- https://security.netapp.com/advisory/ntap-20210528-0005/
- https://bugzilla.redhat.com/show_bug.cgi?id=1951118
- https://access.redhat.com/errata/RHSA-2022:7472
- https://access.redhat.com/errata/RHSA-2022:7967
- https://access.redhat.com/security/cve/CVE-2021-3507
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html