What happened
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_qca: fix NULL pointer dereference in qca_setup() for non-serdev device hu->serdev is NULL for hci_uart attached via non-serdev paths, but qca_setup() unconditionally calls serdev_device_get_drvdata(hu->serdev) and dereferences the result, causing a NULL pointer dereference. Fix by guarding the dereference with a NULL check, consistent with the rest of qca_setup().
Affected versions
Linux: 7812a441617ad7cf3e62281d3fa518d2ba17c100 through before 74f179e75ab03bdc818a5e9709d8a8440c351463 (git); 22d893eec0d52fa97d25d3de248285648f26ef68 through before 0704c04769ccc1a0939682db35d816dfa5fe75dc (git); 22d893eec0d52fa97d25d3de248285648f26ef68 through before 3ec629fee178d429f01ae843e4ea888de93012bf (git); 7.0 Fixed: See vendor advisory.
Why it matters
Review the vendor advisory and exposure of the affected product to determine operational impact.
Detection & mitigation
- Apply vendor-provided updates or mitigations.
- Review affected product exposure and access logs.
Public PoC references
No public PoC reference has passed the current publication threshold.