CVE-2021-3409
Publication date 23 March 2021
Last updated 18 August 2025
Ubuntu priority
Description
The patch for CVE-2020-17380/CVE-2020-25085 was found to be ineffective, thus making QEMU vulnerable to the out-of-bounds read/write access issues previously found in the SDHCI controller emulation code. This flaw allows a malicious privileged guest to crash the QEMU process on the host, resulting in a denial of service or potential code execution. QEMU up to (including) 5.2.0 is affected by this.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| qemu | 25.10 questing |
Fixed 1:6.0+dfsg-1~ubuntu3
|
| 25.04 plucky |
Fixed 1:6.0+dfsg-1~ubuntu3
|
|
| 24.04 LTS noble |
Fixed 1:6.0+dfsg-1~ubuntu3
|
|
| 22.04 LTS jammy |
Fixed 1:6.0+dfsg-1~ubuntu3
|
|
| 20.04 LTS focal |
Fixed 1:4.2-3ubuntu6.17
|
|
| 18.04 LTS bionic |
Fixed 1:2.11+dfsg-1ubuntu7.37
|
|
| 16.04 LTS xenial |
Vulnerable
|
|
| 14.04 LTS trusty |
Vulnerable
|
|
| qemu-kvm | 25.10 questing | Not in release |
| 25.04 plucky | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 20.04 LTS focal | Not in release | |
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release |
Patch details
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.7 · Medium
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | High |
| User interaction | None |
| Scope | Changed |
| Confidentiality | Low |
| Integrity impact | Low |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L |
References
Related Ubuntu Security Notices (USN)
- USN-5010-1
- QEMU vulnerabilities
- 15 July 2021