QEMU (aka Quick Emulator) built with the Rocker switch emulation support is vulnerable to an off-by-one error. It happens while processing transmit (tx) descriptors in 'tx_consume' routine, if a descriptor was to have more than allowed (ROCKER_TX_FRAGS_MAX=16) fragments. A privileged user inside guest could use this flaw to cause memory leakage on the host or crash the QEMU process instance resulting in DoS issue.
CVSS Details
- CVSS 3.1 Base Score: 6.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade qemu | Jul 30, 2024 | Dec 29, 2016 |
| Freebsd | — | Upgrade qemuUpgrade qemu-user-staticUpgrade qemu-sbrunoUpgrade qemu-devel | Dec 10, 2025 | Jan 3, 2016 |
| Gentoo Linux | — | Upgrade app-emulation/qemu. | Oct 30, 2017 | Dec 29, 2016 |
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