In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_sync: annotate data-races around hdev->req_status
__hci_cmd_sync_sk() sets hdev->req_status under hdev->req_lock:
hdev->req_status = HCI_REQ_PEND;
However, several other functions read or write hdev->req_status without
holding any lock:
- hci_send_cmd_sync() reads req_status in hci_cmd_work (workqueue)
- hci_cmd_sync_complete() reads/writes from HCI event completion
- hci_cmd_sync_cancel() / hci_cmd_sync_cancel_sync() read/write
- hci_abort_conn() reads in connection abort path
Since __hci_cmd_sync_sk() runs on hdev->req_workqueue while
hci_send_cmd_sync() runs on hdev->workqueue, these are different
workqueues that can execute concurrently on different CPUs. The plain
C accesses constitute a data race.
Add READ_ONCE()/WRITE_ONCE() annotations on all concurrent accesses
to hdev->req_status to prevent potential compiler optimizations that
could affect correctness (e.g., load fusing in the wait_event
condition or store reordering).
References
Configurations
Configuration 1 (hide)
|
History
12 May 2026, 21:36
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux linux Kernel
Linux |
|
| CPE | cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CWE | NVD-CWE-noinfo | |
| References | () https://git.kernel.org/stable/c/40734ce8efc34c4a0d0222855798c0dc14b65f2e - Patch | |
| References | () https://git.kernel.org/stable/c/6e539907c0d11f514c5e0b049b27b04dff48a5b1 - Patch | |
| References | () https://git.kernel.org/stable/c/a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27 - Patch | |
| References | () https://git.kernel.org/stable/c/b6807cfc195ef99e1ac37b2e1e60df40295daa8c - Patch |
06 May 2026, 10:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-06 10:16
Updated : 2026-05-12 21:36
NVD link : CVE-2026-43119
Mitre link : CVE-2026-43119
CVE.ORG link : CVE-2026-43119
JSON object : View
Products Affected
linux
- linux_kernel
CWE