CVE-2025-0620

Publication date 3 June 2025

Last updated 6 June 2025

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

When using Kerberos authentication with SMB, smbd doesn't pick up group membership changes when re-authenticating an expired SMB session

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
samba	25.04 plucky	Vulnerable
	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Notes

mdeslaur

only affects 4.21.0+

Patch details

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

Package	Patch details
samba	Upstream: https://attachments.samba.org/attachment.cgi?id=18644 Upstream: https://git.samba.org/?p=samba.git;a=commit;h=bb4d8d322c2c7bda2cb245e60c423920ec5fa167

Severity score breakdown

Parameter	Value
Base score	6.6 · Medium
Attack vector	Network
Attack complexity	High
Privileges required	High
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

References

Other references