CVE-2022-49711
bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Feb 26, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
f93627146f0e371093966ed3d44c065aa077cfb1 < 720ab105df7bf3eee62d2bddd41526b29d07d045 f93627146f0e371093966ed3d44c065aa077cfb1 < ccd1751092341ac120a961835211f9f2e3735963 f93627146f0e371093966ed3d44c065aa077cfb1 < 161b68b0a728377aaa10a8e14c70e7734f3c9ff7 f93627146f0e371093966ed3d44c065aa077cfb1 < 928ea98252ad75118950941683893cf904541da9
Linux / Linux
4.8
References
git.kernel.org: https://git.kernel.org/stable/c/720ab105df7bf3eee62d2bddd41526b29d07d045 git.kernel.org: https://git.kernel.org/stable/c/ccd1751092341ac120a961835211f9f2e3735963 git.kernel.org: https://git.kernel.org/stable/c/161b68b0a728377aaa10a8e14c70e7734f3c9ff7 git.kernel.org: https://git.kernel.org/stable/c/928ea98252ad75118950941683893cf904541da9