CVE-2024-26890
Bluetooth: btrtl: fix out of bounds memory access
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btrtl: fix out of bounds memory access
The problem is detected by KASAN.
btrtl driver uses private hci data to store 'struct btrealtek_data'.
If btrtl driver is used with btusb, then memory for private hci data
is allocated in btusb. But no private data is allocated after hci_dev,
when btrtl is used with hci_h5.
This commit adds memory allocation for hci_h5 case.
==================================================================
BUG: KASAN: slab-out-of-bounds in btrtl_initialize+0x6cc/0x958 [btrtl]
Write of size 8 at addr ffff00000f5a5748 by task kworker/u9:0/76
Hardware name: Pine64 PinePhone (1.2) (DT)
Workqueue: hci0 hci_power_on [bluetooth]
Call trace:
dump_backtrace+0x9c/0x128
show_stack+0x20/0x38
dump_stack_lvl+0x48/0x60
print_report+0xf8/0x5d8
kasan_report+0x90/0xd0
__asan_store8+0x9c/0xc0
[btrtl]
h5_btrtl_setup+0xd0/0x2f8 [hci_uart]
h5_setup+0x50/0x80 [hci_uart]
hci_uart_setup+0xd4/0x260 [hci_uart]
hci_dev_open_sync+0x1cc/0xf68 [bluetooth]
hci_dev_do_open+0x34/0x90 [bluetooth]
hci_power_on+0xc4/0x3c8 [bluetooth]
process_one_work+0x328/0x6f0
worker_thread+0x410/0x778
kthread+0x168/0x178
ret_from_fork+0x10/0x20
Allocated by task 53:
kasan_save_stack+0x3c/0x68
kasan_save_track+0x20/0x40
kasan_save_alloc_info+0x68/0x78
__kasan_kmalloc+0xd4/0xd8
__kmalloc+0x1b4/0x3b0
hci_alloc_dev_priv+0x28/0xa58 [bluetooth]
hci_uart_register_device+0x118/0x4f8 [hci_uart]
h5_serdev_probe+0xf4/0x178 [hci_uart]
serdev_drv_probe+0x54/0xa0
really_probe+0x254/0x588
__driver_probe_device+0xc4/0x210
driver_probe_device+0x64/0x160
__driver_attach_async_helper+0x88/0x158
async_run_entry_fn+0xd0/0x388
process_one_work+0x328/0x6f0
worker_thread+0x410/0x778
kthread+0x168/0x178
ret_from_fork+0x10/0x20
Last potentially related work creation:
kasan_save_stack+0x3c/0x68
__kasan_record_aux_stack+0xb0/0x150
kasan_record_aux_stack_noalloc+0x14/0x20
__queue_work+0x33c/0x960
queue_work_on+0x98/0xc0
hci_recv_frame+0xc8/0x1e8 [bluetooth]
h5_complete_rx_pkt+0x2c8/0x800 [hci_uart]
h5_rx_payload+0x98/0xb8 [hci_uart]
h5_recv+0x158/0x3d8 [hci_uart]
hci_uart_receive_buf+0xa0/0xe8 [hci_uart]
ttyport_receive_buf+0xac/0x178
flush_to_ldisc+0x130/0x2c8
process_one_work+0x328/0x6f0
worker_thread+0x410/0x778
kthread+0x168/0x178
ret_from_fork+0x10/0x20
Second to last potentially related work creation:
kasan_save_stack+0x3c/0x68
__kasan_record_aux_stack+0xb0/0x150
kasan_record_aux_stack_noalloc+0x14/0x20
__queue_work+0x788/0x960
queue_work_on+0x98/0xc0
__hci_cmd_sync_sk+0x23c/0x7a0 [bluetooth]
__hci_cmd_sync+0x24/0x38 [bluetooth]
btrtl_initialize+0x760/0x958 [btrtl]
h5_btrtl_setup+0xd0/0x2f8 [hci_uart]
h5_setup+0x50/0x80 [hci_uart]
hci_uart_setup+0xd4/0x260 [hci_uart]
hci_dev_open_sync+0x1cc/0xf68 [bluetooth]
hci_dev_do_open+0x34/0x90 [bluetooth]
hci_power_on+0xc4/0x3c8 [bluetooth]
process_one_work+0x328/0x6f0
worker_thread+0x410/0x778
kthread+0x168/0x178
ret_from_fork+0x10/0x20
==================================================================
En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: Bluetooth: btrtl: arreglar acceso a memoria fuera de los límites El problema es detectado por KASAN. El controlador btrtl utiliza datos privados de hci para almacenar 'struct btrealtek_data'. Si se utiliza el controlador btrtl con btusb, entonces la memoria para los datos privados de hci se asigna en btusb. Pero no se asignan datos privados después de hci_dev, cuando se usa btrtl con hci_h5. Esta confirmación agrega asignación de memoria para el caso hci_h5. ==================================================== ================ ERROR: KASAN: losa fuera de los límites en btrtl_initialize+0x6cc/0x958 [btrtl] Escritura de tamaño 8 en la dirección ffff00000f5a5748 por tarea kworker/u9:0 /76 Nombre del hardware: Pine64 PinePhone (1.2) (DT) Cola de trabajo: hci0 hci_power_on [bluetooth] Rastreo de llamadas: dump_backtrace+0x9c/0x128 show_stack+0x20/0x38 dump_stack_lvl+0x48/0x60 print_report+0xf8/0x5d8 kasan_report+0x90/0xd0 __asan_store8 + 0x9c/0xc0 [btrtl] h5_btrtl_setup+0xd0/0x2f8 [hci_uart] h5_setup+0x50/0x80 [hci_uart] hci_uart_setup+0xd4/0x260 [hci_uart] hci_dev_open_sync+0x1cc/0xf68 [bluetooth] abierto+0x34/0x90 [bluetooth] hci_power_on+0xc4/ 0x3c8 [bluetooth] Process_one_work+0x328/0x6f0 trabajador_thread+0x410/0x778 kthread+0x168/0x178 ret_from_fork+0x10/0x20 Asignado por tarea 53: kasan_save_stack+0x3c/0x68 kasan_save_track+0x20/0x40 _alloc_info+0x68/0x78 __kasan_kmalloc+0xd4/0xd8 __kmalloc +0x1b4/0x3b0 hci_alloc_dev_priv+0x28/0xa58 [bluetooth] hci_uart_register_device+0x118/0x4f8 [hci_uart] h5_serdev_probe+0xf4/0x178 [hci_uart] serdev_drv_probe+0x54/0xa0realmente_probe+0x254/ 0x588 __driver_probe_device+0xc4/0x210 driver_probe_device+0x64/0x160 __driver_attach_async_helper+ 0x88/0x158 async_run_entry_fn+0xd0/0x388 Process_one_work+0x328/0x6f0 trabajador_thread+0x410/0x778 kthread+0x168/0x178 ret_from_fork+0x10/0x20 Última creación de trabajo potencialmente relacionado: kasan_save_stack+0x3c/0x68 san_record_aux_stack+0xb0/0x150 kasan_record_aux_stack_noalloc+0x14/0x20 __queue_work +0x33c/0x960 queue_work_on+0x98/0xc0 hci_recv_frame+0xc8/0x1e8 [bluetooth] h5_complete_rx_pkt+0x2c8/0x800 [hci_uart] h5_rx_payload+0x98/0xb8 [hci_uart] h5_recv+0x158/0x3d8 [ hci_uart] hci_uart_receive_buf+0xa0/0xe8 [hci_uart] ttyport_receive_buf +0xac/0x178 Flush_to_ldisc+0x130/0x2c8 Process_one_work+0x328/0x6f0 trabajador_thread+0x410/0x778 kthread+0x168/0x178 ret_from_fork+0x10/0x20 Penúltima creación de trabajo potencialmente relacionado: kasan_save_stack+0x3c/0x68 _record_aux_stack+0xb0/0x150 kasan_record_aux_stack_noalloc+0x14 /0x20 __queue_work+0x788/0x960 queue_work_on+0x98/0xc0 __hci_cmd_sync_sk+0x23c/0x7a0 [bluetooth] __hci_cmd_sync+0x24/0x38 [bluetooth] btrtl_initialize+0x760/0x958 [btrtl] arriba+0xd0/0x2f8 [hci_uart] h5_setup+0x50/0x80 [ hci_uart] hci_uart_setup+0xd4/0x260 [hci_uart] hci_dev_open_sync+0x1cc/0xf68 [bluetooth] hci_dev_do_open+0x34/0x90 [bluetooth] hci_power_on+0xc4/0x3c8 [bluetooth] Process_one_work+0x328/0x6f0 trabajador_thread+0x 410/0x778 kthread+0x168/0x178 ret_from_fork +0x10/0x20 ================================================ =====================
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-19 CVE Reserved
- 2024-04-17 CVE Published
- 2024-04-18 EPSS Updated
- 2024-12-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-125: Out-of-bounds Read
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/5b355944b19011011dd3fd4187444c5ff1d76ad2 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2024-26890 | 2024-11-12 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2275670 | 2024-11-12 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.2 < 6.6.23 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.2 < 6.6.23" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.2 < 6.7.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.2 < 6.7.11" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.2 < 6.8.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.2 < 6.8.2" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.2 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.2 < 6.9" | en |
Affected
| ||||||