CVE-2021-47195

In the Linux kernel, the following vulnerability has been resolved: spi: fix use-after-free of the add_lock mutex Commit 6098475d4cb4 ("spi: Fix deadlock when adding SPI controllers on SPI buses") introduced a per-controller mutex. But mutex_unlock() of said lock is called after the controller is already freed: spi_unregister_controller(ctlr) -> put_device(&ctlr->dev) -> spi_controller_release(dev) -> mutex_unlock(&ctrl->add_lock) Move the put_device() after the mutex_unlock().

The following products are affected by CVE-2021-47195 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2021-47195.

URL	Resource
https://git.kernel.org/stable/c/11eab327a2a8bd36c38afbff920ae1bd45588dd4
https://git.kernel.org/stable/c/37330f37f6666c7739a44b2b6b95b047ccdbed2d
https://git.kernel.org/stable/c/54c2c96eafcfd242e52e932ab54ace4784efe1dd
https://git.kernel.org/stable/c/6c53b45c71b4920b5e62f0ea8079a1da382b9434
https://lore.kernel.org/linux-cve-announce/2024041035-CVE-2021-47195-38e8@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47195
https://www.cve.org/CVERecord?id=CVE-2021-47195