Bug 2535010

Summary:	CVE-2026-19774 bluez: BlueZ: Arbitrary Code Execution via A2DP Stack-based Buffer Overflow [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Vladimir Vasilev <vvasilev>
Component:	bluez	Assignee:	Peter Robinson <pbrobinson>
Status:	ON_QA ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	rawhide	CC:	bnocera, dwmw2, lihis, michel, ngompa13, pbrobinson
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["55136245-7389-4897-8ee4-7ccfc73cc0e3"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		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:
Bug Blocks:	2534102

Description Vladimir Vasilev 2026-09-16 07:02:14 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability.

The specific flaw exists within the handling of the stream endpoints. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-29429.

Comment 1 Fedora Update System 2026-09-16 10:36:55 UTC

FEDORA-2026-b181e6352d (bluez-5.87+1.git789f6e154-2.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-b181e6352d

Comment 2 Fedora Update System 2026-09-16 10:37:02 UTC

FEDORA-2026-f1ad071fb6 (bluez-5.87+1.git789f6e154-2.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-f1ad071fb6

Comment 3 Fedora Update System 2026-09-16 10:37:08 UTC

FEDORA-2026-9e6e8df67a (bluez-5.87+1.git789f6e154-2.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-9e6e8df67a

Comment 4 Fedora Update System 2026-09-17 01:34:27 UTC

FEDORA-2026-b181e6352d has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-b181e6352d`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-b181e6352d

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-09-17 18:14:24 UTC

FEDORA-2026-f1ad071fb6 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-f1ad071fb6`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-f1ad071fb6

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2026-09-17 18:38:42 UTC

FEDORA-2026-9e6e8df67a has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-9e6e8df67a`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-9e6e8df67a

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.