Bug 2020523 (CVE-2021-43400)

Summary:	CVE-2021-43400 bluez: use-after-free in gatt-database.c
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bdettelb, bnocera, darcari, dwmw2, dzickus, gtiwari, hwkernel-mgr, pbrobinson, spacewar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	bluez 5.62	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-01-12 14:34:47 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2020524
Bug Blocks:	2020525

Description Marian Rehak 2021-11-05 08:08:38 UTC

A use-after-free in gatt-database.c can occur when a client disconnects during D-Bus processing of a WriteValue call.

External Reference:

https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=838c0dc7641e1c991c0f3027bf94bee4606012f8

Comment 1 Marian Rehak 2021-11-05 08:08:55 UTC

Created bluez tracking bugs for this issue:

Affects: fedora-all [bug 2020524]

Comment 2 juneau 2021-11-05 11:51:31 UTC

Marking services "notaffected" as this issue is specific to Bluetooth.

Comment 3 Peter Robinson 2021-11-30 11:33:23 UTC

Fixed in Fedora over a month ago with bluez-5.62-1.fc34  bluez-5.62-1.fc35

Comment 4 devthomp 2022-01-12 13:20:55 UTC

Bug is relevant to 5.61 none of our products (besides fedora) ship this version.

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43400

Comment 5 Product Security DevOps Team 2022-01-12 14:34:45 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-43400