CVE-2020-29443

Description

ide_atapi_cmd_reply_end in hw/ide/atapi.c in QEMU 5.1.0 allows out-of-bounds read access because a buffer index is not validated.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qemu-kvm	26.10 stonking	Not in release
	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
qemu	26.10 stonking	Fixed in 1:6.0+dfsg-1~ubuntu3
	26.04 LTS resolute	Fixed in 1:6.0+dfsg-1~ubuntu3
	25.10 questing	Fixed in 1:6.0+dfsg-1~ubuntu3
	25.04 plucky	Fixed in 1:6.0+dfsg-1~ubuntu3
	24.10 oracular	Fixed in 1:6.0+dfsg-1~ubuntu3
	24.04 LTS noble	Fixed in 1:6.0+dfsg-1~ubuntu3
	23.10 mantic	Fixed in 1:6.0+dfsg-1~ubuntu3
	23.04 lunar	Fixed in 1:6.0+dfsg-1~ubuntu3
	22.10 kinetic	Fixed in 1:6.0+dfsg-1~ubuntu3
	22.04 LTS jammy	Fixed in 1:6.0+dfsg-1~ubuntu3
	21.10 impish	Fixed in 1:6.0+dfsg-1~ubuntu3
	21.04 hirsute	Fixed in 1:5.2+dfsg-9ubuntu3.1
	20.10 groovy	Fixed in 1:5.0-5ubuntu9.4
	20.04 LTS focal	Fixed in 1:4.2-3ubuntu6.12
	18.04 LTS bionic	Fixed in 1:2.11+dfsg-1ubuntu7.35
	16.04 LTS xenial	Fixed in 1:2.5+dfsg-5ubuntu10.49
	14.04 LTS trusty	Fixed in 2.0.0+dfsg-2ubuntu1.47+esm6

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Notes

mdeslaur

second patch is needed in hirsute

Patch details

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

Package	Patch details
qemu	Upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=813212288970c39b1800f63e83ac6e96588095c6 Upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=b8d7f1bc59276fec85e4d09f1567613a3e14d31e

Severity score breakdown

CVSS version: CVSS v3.0

Base score 3.9 · Low

Base metrics

Parameter	Value
Attack vector	Local
Attack complexity	High
Privileges required	High
User interaction	None
Scope	Changed
Confidentiality impact	Low
Integrity impact	None
Availability impact	Low

Scores

Parameter	Value
Base score	3.9 · Low
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L

References

Related Ubuntu Security Notices (USN)

USN-4725-1
QEMU vulnerabilities
8 February 2021

USN-5010-1
QEMU vulnerabilities
15 July 2021

USN-8412-1
QEMU vulnerabilities
9 June 2026