CVE-2024-42137

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: qca: Fix BT enable failure again for QCA6390 after warm reboot Commit 272970be3dab ("Bluetooth: hci_qca: Fix driver shutdown on closed serdev") will cause below regression issue: BT can't be enabled after below steps: cold boot -> enable BT -> disable BT -> warm reboot -> BT enable failure if property enable-gpios is not configured within DT|ACPI for QCA6390. The commit is to fix a use-after-free issue within qca_serdev_shutdown() by adding condition to avoid the serdev is flushed or wrote after closed but also introduces this regression issue regarding above steps since the VSC is not sent to reset controller during warm reboot. Fixed by sending the VSC to reset controller within qca_serdev_shutdown() once BT was ever enabled, and the use-after-free issue is also fixed by this change since the serdev is still opened before it is flushed or wrote. Verified by the reported machine Dell XPS 13 9310 laptop over below two kernel commits: commit e00fc2700a3f ("Bluetooth: btusb: Fix triggering coredump implementation for QCA") of bluetooth-next tree. commit b23d98d46d28 ("Bluetooth: btusb: Fix triggering coredump implementation for QCA") of linus mainline tree.

Product status

References

https://git.kernel.org/stable/c/215a26c2404fa34625c725d446967fa328a703eb

https://git.kernel.org/stable/c/4ca6013cd18e58ac1044908c40d4006a92093a11

https://git.kernel.org/stable/c/e6e200b264271f62a3fadb51ada9423015ece37b

https://git.kernel.org/stable/c/e2d8aa4c763593704ac21e7591aed4f13e32f3b5

https://git.kernel.org/stable/c/977b9dc65e14fb80de4763d949c7dec2ecb15b9b

https://git.kernel.org/stable/c/88e72239ead9814b886db54fc4ee39ef3c2b8f26

cve.org CVE-2024-42137

nvd.nist.gov CVE-2024-42137

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