In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync
This checks if the ACL connection remains valid as it could be destroyed while hci_enhanced_setup_sync is pending on cmd_sync leading to the following trace:
BUG: KASAN: slab-use-after-free in hci_enhanced_setup_sync+0x91b/0xa60 Read of size 1 at addr ffff888002328ffd by task kworker/u5:2/37
CPU: 0 UID: 0 PID: 37 Comm: kworker/u5:2 Not tainted 6.11.0-rc6-01300-g810be445d8d6 #7099 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-2.fc40 04/01/2014 Workqueue: hci0 hci_cmd_sync_work Call Trace: <TASK> dump_stack_lvl+0x5d/0x80 ? hci_enhanced_setup_sync+0x91b/0xa60 print_report+0x152/0x4c0 ? hci_enhanced_setup_sync+0x91b/0xa60 ? __virt_addr_valid+0x1fa/0x420 ? hci_enhanced_setup_sync+0x91b/0xa60 kasan_report+0xda/0x1b0 ? hci_enhanced_setup_sync+0x91b/0xa60 hci_enhanced_setup_sync+0x91b/0xa60 ? __pfx_hci_enhanced_setup_sync+0x10/0x10 ? __pfx___mutex_lock+0x10/0x10 hci_cmd_sync_work+0x1c2/0x330 process_one_work+0x7d9/0x1360 ? __pfx_lock_acquire+0x10/0x10 ? __pfx_process_one_work+0x10/0x10 ? assign_work+0x167/0x240 worker_thread+0x5b7/0xf60 ? __kthread_parkme+0xac/0x1c0 ? __pfx_worker_thread+0x10/0x10 ? __pfx_worker_thread+0x10/0x10 kthread+0x293/0x360 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2f/0x70 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 </TASK>
Allocated by task 34: kasan_save_stack+0x30/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x8f/0xa0 __hci_conn_add+0x187/0x17d0 hci_connect_sco+0x2e1/0xb90 sco_sock_connect+0x2a2/0xb80 __sys_connect+0x227/0x2a0 __x64_sys_connect+0x6d/0xb0 do_syscall_64+0x71/0x140 entry_SYSCALL_64_after_hwframe+0x76/0x7e
Freed by task 37: kasan_save_stack+0x30/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 __kasan_slab_free+0x101/0x160 kfree+0xd0/0x250 device_release+0x9a/0x210 kobject_put+0x151/0x280 hci_conn_del+0x448/0xbf0 hci_abort_conn_sync+0x46f/0x980 hci_cmd_sync_work+0x1c2/0x330 process_one_work+0x7d9/0x1360 worker_thread+0x5b7/0xf60 kthread+0x293/0x360 ret_from_fork+0x2f/0x70 ret_from_fork_asm+0x1a/0x30
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | May 15, 2025 | Oct 21, 2024 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rtNo solution exists | May 15, 2025 | Oct 21, 2024 |
| Ubuntu | — | Upgrade linux-image-azure-nvidiaUpgrade linux-image-6.8.0-1024-nvidia-lowlatency-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-azure-fdeUpgrade linux-image-oem-22.04bUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-oracle-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1024-nvidia-lowlatencyUpgrade linux-image-generic-64kUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-oem-22.04aUpgrade linux-image-genericUpgrade linux-image-oem-22.04cUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.8.0-1024-nvidiaUpgrade linux-image-6.8.0-1026-gcpUpgrade linux-image-6.11.0-18-genericUpgrade linux-image-6.8.0-1022-oracleUpgrade linux-image-6.8.0-1022-oracle-64kUpgrade linux-image-gkeop-6.8Upgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-generic-lpaeUpgrade linux-image-gkeopUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1025-azure-fdeUpgrade linux-image-nvidiaUpgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-gcpUpgrade linux-image-virtualUpgrade linux-image-6.8.0-1024-nvidia-64kUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-6.8.1-1018-realtimeUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-6.8.0-1027-awsUpgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-ibmUpgrade linux-image-6.8.0-57-generic-64kUpgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-oem-22.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-oem-24.04aUpgrade linux-image-6.8.0-56-genericUpgrade linux-image-lowlatencyUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-azure-lts-24.04Upgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-oem-24.04bUpgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-6.11.0-1009-azureUpgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-1026-gcp-64kUpgrade linux-image-6.8.0-1022-ibmUpgrade linux-image-nvidia-64kUpgrade linux-image-oem-22.04dUpgrade linux-image-aws-lts-24.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.8.0-1021-gkeUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.8.0-1025-awsUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-gkeUpgrade linux-image-6.11.0-1009-awsUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.8.0-1024-oemUpgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-6.8.0-1025-azureUpgrade linux-image-azureUpgrade linux-image-6.11.0-1015-oemUpgrade linux-image-oem-24.04Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-gcp-64kUpgrade linux-image-raspiUpgrade linux-image-oracleUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-awsUpgrade linux-image-6.8.0-56-generic-64kUpgrade linux-image-realtimeUpgrade linux-image-6.8.0-1008-gkeopUpgrade linux-image-6.8.0-56-lowlatencyUpgrade linux-image-6.8.0-57-genericUpgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-kvmUpgrade linux-image-6.8.0-56-lowlatency-64k | Feb 20, 2025 | Oct 21, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Oct 21, 2024 |
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