CVE-2022-49711 (GCVE-0-2022-49711)
Vulnerability from cvelistv5
Published
2025-02-26 02:24
Modified
2025-05-04 08:43
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/161b68b0a728377aaa10a8e14c70e7734f3c9ff7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/928ea98252ad75118950941683893cf904541da9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ccd1751092341ac120a961835211f9f2e3735963Patch
Impacted products
Vendor Product Version
Linux Linux Version: f93627146f0e371093966ed3d44c065aa077cfb1
Version: f93627146f0e371093966ed3d44c065aa077cfb1
Version: f93627146f0e371093966ed3d44c065aa077cfb1
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   Linux Linux Version: 4.8
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