CVE-2021-3930
Publication date 18 February 2022
Last updated 24 July 2024
Ubuntu priority
An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| qemu | ||
| 22.04 LTS jammy |
Fixed 1:6.2+dfsg-2ubuntu5
|
|
| 20.04 LTS focal |
Fixed 1:4.2-3ubuntu6.21
|
|
| 18.04 LTS bionic |
Fixed 1:2.11+dfsg-1ubuntu7.39
|
|
| 16.04 LTS xenial |
Fixed 1:2.5+dfsg-5ubuntu10.51+esm1
|
|
| 14.04 LTS trusty |
Fixed 2.0.0+dfsg-2ubuntu1.47+esm2
|
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| Package | Patch details |
|---|---|
| qemu |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
6.5 · Medium
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-5307-1
- QEMU vulnerabilities
- 28 February 2022
- USN-5772-1
- QEMU vulnerabilities
- 12 December 2022