CVE-2022-30767

Publication date 16 May 2022

Last updated 18 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

nfs_lookup_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has an unbounded memcpy with a failed length check, leading to a buffer overflow. NOTE: this issue exists because of an incorrect fix for CVE-2019-14196.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
u-boot	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Fixed 2022.01+dfsg-2ubuntu2.3
	21.10 impish	Ignored end of life
	20.04 LTS focal	Fixed 2021.01+dfsg-3ubuntu0~20.04.5
	18.04 LTS bionic	Fixed 2020.10+dfsg-1ubuntu0~18.04.3
	16.04 LTS xenial	Vulnerable

Notes

sbeattie

introduced in 5d14ee4e53a81055d34ba280cb8fd90330f22a96 upstream

Patch details

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

Package	Patch details
u-boot	Upstream: bdbf7a0

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-5764-1
U-Boot vulnerabilities
6 December 2022