CVE-2022-2962
Last modified
CVE-2022-2962 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the rx/tx descriptor or copies the rx/tx frame, it doesn't check whether the destination address is its own MMIO address. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
Description
A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the rx/tx descriptor or copies the rx/tx frame, it doesn't check whether the destination address is its own MMIO address. This can cause the device to trigger MMIO handlers multiple times, possibly leading to a stack or heap overflow. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | >= 4.2.0, <= 7.1.0 |
References
- https://gitlab.com/qemu-project/qemu/-/commit/36a894aeb64a2e02871016da1c37d4a4ca109182Patch, Third Party Advisory
- https://gitlab.com/qemu-project/qemu/-/issues/1171Exploit, Issue Tracking, Third Party Advisory
- https://gitlab.com/qemu-project/qemu/-/commit/36a894aeb64a2e02871016da1c37d4a4ca109182Patch, Third Party Advisory
- https://gitlab.com/qemu-project/qemu/-/issues/1171Exploit, Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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