Bug 2301497 (CVE-2024-42132)

Summary:	CVE-2024-42132 kernel: bluetooth/hci: disallow setting handle bigger than HCI_CONN_HANDLE_MAX
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel 6.6.39, kernel 6.9.9, kernel 6.10	Doc Type:	If docs needed, set a value
Doc Text:	A warning was observed in the Linux kernel in hci_conn_del() caused by freeing handle that was not allocated using ida allocator. This is caused by handle bigger than HCI_CONN_HANDLE_MAX passed by hci_le_big_sync_established_evt(), which makes code think it's unset connection.	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:	2301989
Bug Blocks:

Description OSIDB Bzimport 2024-07-30 08:35:54 UTC

In the Linux kernel, the following vulnerability has been resolved:

bluetooth/hci: disallow setting handle bigger than HCI_CONN_HANDLE_MAX

Syzbot hit warning in hci_conn_del() caused by freeing handle that was
not allocated using ida allocator.

This is caused by handle bigger than HCI_CONN_HANDLE_MAX passed by
hci_le_big_sync_established_evt(), which makes code think it's unset
connection.

Add same check for handle upper bound as in hci_conn_set_handle() to
prevent warning.

Comment 1 Mauro Matteo Cascella 2024-07-31 09:46:31 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024073028-CVE-2024-42132-49bf@gregkh/T

Comment 2 Mauro Matteo Cascella 2024-07-31 09:46:52 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301989]

Comment 7 errata-xmlrpc 2024-11-12 09:37:46 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:9315 https://access.redhat.com/errata/RHSA-2024:9315