CVE-2020-25085

Publication date 25 September 2020

Last updated 18 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.0 · Medium

Score breakdown

Description

QEMU 5.0.0 has a heap-based Buffer Overflow in flatview_read_continue in exec.c because hw/sd/sdhci.c mishandles a write operation in the SDHC_BLKSIZE case.

Read the notes from the security team

Status

Package Ubuntu Release Status
qemu 25.10 questing
Fixed 1:5.2+dfsg-2ubuntu1
25.04 plucky
Fixed 1:5.2+dfsg-2ubuntu1
24.10 oracular
Fixed 1:5.2+dfsg-2ubuntu1
24.04 LTS noble
Fixed 1:5.2+dfsg-2ubuntu1
23.10 mantic
Fixed 1:5.2+dfsg-2ubuntu1
23.04 lunar
Fixed 1:5.2+dfsg-2ubuntu1
22.10 kinetic
Fixed 1:5.2+dfsg-2ubuntu1
22.04 LTS jammy
Fixed 1:5.2+dfsg-2ubuntu1
21.10 impish
Fixed 1:5.2+dfsg-2ubuntu1
21.04 hirsute
Fixed 1:5.2+dfsg-2ubuntu1
20.10 groovy
Fixed 1:5.0-5ubuntu9.2
20.04 LTS focal
Fixed 1:4.2-3ubuntu6.10
18.04 LTS bionic
Fixed 1:2.11+dfsg-1ubuntu7.34
16.04 LTS xenial
Fixed 1:2.5+dfsg-5ubuntu10.48
14.04 LTS trusty
Vulnerable
qemu-kvm 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

Notes

mdeslaur

same fix as CVE-2020-17380

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

Parameter Value
Base score 5.0 · Medium
Attack vector Local
Attack complexity High
Privileges required High
User interaction None
Scope Changed
Confidentiality Low
Integrity impact Low
Availability impact Low
Vector CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L

References

Related Ubuntu Security Notices (USN)

    • USN-4650-1
    • QEMU vulnerabilities
    • 30 November 2020

Other references