Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove() In fsl_mc_bus_remove(), mc->root_mc_bus_dev->mc_io is passed to fsl_destroy_mc_io(). However, mc->root_mc_bus_dev is already freed in fsl_mc_device_remove(). Then reference to mc->root_mc_bus_dev->mc_io triggers KASAN use-after-free. To avoid the use-after-free, keep the reference to mc->root_mc_bus_dev->mc_io in a local variable and pass to fsl_destroy_mc_io(). This patch needs rework to apply to kernels older than v5.15.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f93627146f0e371093966ed3d44c065aa077cfb1 before 720ab105df7bf3eee62d2bddd41526b29d07d045; affected f93627146f0e371093966ed3d44c065aa077cfb1 before ccd1751092341ac120a961835211f9f2e3735963; affected f93627146f0e371093966ed3d44c065aa077cfb1 before 161b68b0a728377aaa10a8e14c70e7734f3c9ff7; affected f93627146f0e371093966ed3d44c065aa077cfb1 before 928ea98252ad75118950941683893cf904541da9 |
| Linux / Linux | affected 4.8; unaffected 0 before 4.8; unaffected 5.10.248 through 5.10.*; unaffected 5.15.49 through 5.15.*; unaffected 5.18.6 through 5.18.*; unaffected 5.19 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/720ab105df7bf3eee62d2bddd41526b29d07d045
- https://git.kernel.org/stable/c/ccd1751092341ac120a961835211f9f2e3735963
- https://git.kernel.org/stable/c/161b68b0a728377aaa10a8e14c70e7734f3c9ff7
- https://git.kernel.org/stable/c/928ea98252ad75118950941683893cf904541da9
ADP enrichment
No English description supplied.
No references supplied.