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Vulnerability · Published Oct 21, 2024 · Assigned by Linux

CVE-2024-50029Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync

High 8.8

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.4%top 69.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.190-1DEBIAN-CVE-2024-50029
Debian:13linux6.11.4-1DEBIAN-CVE-2024-50029
Debian:14linux6.11.4-1DEBIAN-CVE-2024-50029
Ubuntu:24.04:LTSlinux6.8.0-56.58USN-7383-1
Ubuntu:24.04:LTSlinux6.8.0-56.58UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-aws6.8.0-1025.27USN-7383-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1025.27UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1027.29~22.04.1UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1027.29~22.04.1USN-7451-1
Ubuntu:24.04:LTSlinux-azure6.8.0-1025.30UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1012.12~24.04.1UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1025.30~22.04.1UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-azure-nvidia6.8.0-1014.15UBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-gcp6.8.0-1026.28UBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-gcp6.8.0-1026.28USN-7383-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-gcp-6.116.11.0-1011.11~24.04.1UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1026.28~22.04.1UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1026.28~22.04.1USN-7383-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1021.25UBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-gke6.8.0-1021.25USN-7383-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1008.10USN-7383-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1008.10UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-57.59~22.04.1UBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-ibm6.8.0-1022.22UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1023.23~22.04.1UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-56.58.1UBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-56.58.1USN-7383-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-56.58.1~22.04.1USN-7383-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-56.58.1~22.04.1UBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1024.27UBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1024.27USN-7383-1
Ubuntu:24.04:LTSlinux-nvidia-6.116.11.0-1007.7UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1024.27~22.04.1USN-7383-1
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1024.27~22.04.1UBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1024.27.1UBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1024.27.1USN-7383-1
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1004.4UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1015.15UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1024.24UBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-oracle6.8.0-1022.23USN-7383-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1022.23UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1022.23~22.04.1USN-7383-1
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1022.23~22.04.1UBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-raspi6.8.0-1028.32UBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-raspi6.8.0-1028.32USN-7524-1
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-riscv6.8.0-56.58.1UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-56.58.1~22.04.1UBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-50029
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-50029
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1017.18UBUNTU-CVE-2024-50029

Affected products (as reported)

VendorProductVersions
Linux Linux e07a06b4eb417f5271d33ce2240e93c62d98b7b4 – before 9b666a0490379c860eab380dec19a864c0bc256be07a06b4eb417f5271d33ce2240e93c62d98b7b4 – before 867639300759e3e1c5b1e1a5ff89231f263a32a7e07a06b4eb417f5271d33ce2240e93c62d98b7b4 – before 98ccd44002d88cbf4edfc4480df532a3da5a013ee07a06b4eb417f5271d33ce2240e93c62d98b7b4 – before 18fd04ad856df07733f5bb07e7f7168e7443d393
Linux Linux 6.1

References