Description (CNA)
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().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected aa3f3d7bef59583f2d3234173105a27ff61ef8fe before 54c2c96eafcfd242e52e932ab54ace4784efe1dd; affected c8dce228db6f81dbc897a018dfc5c418e917cf64 before 11eab327a2a8bd36c38afbff920ae1bd45588dd4; affected 6098475d4cb48d821bdf453c61118c56e26294f0 before 37330f37f6666c7739a44b2b6b95b047ccdbed2d; affected 6098475d4cb48d821bdf453c61118c56e26294f0 before 6c53b45c71b4920b5e62f0ea8079a1da382b9434; affected 722ef19a161ce3fffb3d1b01ce2301c306639bdd; affected 5.14.15 before 5.15 |
| Linux / Linux | affected 5.15; unaffected 0 before 5.15; unaffected 5.15.5 through 5.15.*; unaffected 5.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/54c2c96eafcfd242e52e932ab54ace4784efe1dd
- https://git.kernel.org/stable/c/11eab327a2a8bd36c38afbff920ae1bd45588dd4
- https://git.kernel.org/stable/c/37330f37f6666c7739a44b2b6b95b047ccdbed2d
- https://git.kernel.org/stable/c/6c53b45c71b4920b5e62f0ea8079a1da382b9434
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.