CVE-2021-3409

Publication date 23 March 2021

Last updated 9 June 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.7 · Medium

Score breakdown

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 26.04 LTS resolute
Fixed 1:6.0+dfsg-1~ubuntu3
25.10 questing
Fixed 1:6.0+dfsg-1~ubuntu3
25.04 plucky
Fixed 1:6.0+dfsg-1~ubuntu3
24.10 oracular
Fixed 1:6.0+dfsg-1~ubuntu3
24.04 LTS noble
Fixed 1:6.0+dfsg-1~ubuntu3
23.10 mantic
Fixed 1:6.0+dfsg-1~ubuntu3
23.04 lunar
Fixed 1:6.0+dfsg-1~ubuntu3
22.10 kinetic
Fixed 1:6.0+dfsg-1~ubuntu3
22.04 LTS jammy
Fixed 1:6.0+dfsg-1~ubuntu3
21.10 impish
Fixed 1:6.0+dfsg-1~ubuntu3
21.04 hirsute
Fixed 1:5.2+dfsg-9ubuntu3.1
20.10 groovy
Fixed 1:5.0-5ubuntu9.9
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
Fixed 1:2.5+dfsg-5ubuntu10.51+esm4
14.04 LTS trusty
Fixed 2.0.0+dfsg-2ubuntu1.47+esm6
qemu-kvm 26.04 LTS resolute Not in release
25.10 questing Not in release
25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy 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

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
qemu

Severity score breakdown

CVSS version: CVSS v3.0

Base score 5.7 · Medium

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)

Other references

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