Bug 2320563 (CVE-2024-49951)

Summary: CVE-2024-49951 kernel: Bluetooth: MGMT: Fix possible crash on mgmt_index_removed
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2321027    
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Description OSIDB Bzimport 2024-10-21 19:11:07 UTC 
In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: MGMT: Fix possible crash on mgmt_index_removed

If mgmt_index_removed is called while there are commands queued on
cmd_sync it could lead to crashes like the bellow trace:

0x0000053D: __list_del_entry_valid_or_report+0x98/0xdc
0x0000053D: mgmt_pending_remove+0x18/0x58 [bluetooth]
0x0000053E: mgmt_remove_adv_monitor_complete+0x80/0x108 [bluetooth]
0x0000053E: hci_cmd_sync_work+0xbc/0x164 [bluetooth]

So while handling mgmt_index_removed this attempts to dequeue
commands passed as user_data to cmd_sync.
Comment 1 Robb Gatica 2024-10-22 16:25:55 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102130-CVE-2024-49951-a620@gregkh/T
Comment 2 Avinash Hanwate 2024-10-23 04:09:49 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102130-CVE-2024-49951-a620@gregkh/T
Comment 3 errata-xmlrpc 2025-05-13 08:30:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:6966 https://access.redhat.com/errata/RHSA-2025:6966