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Test your applicationsThere is no fixed version for RHEL:7
kernel-rt
.
Note: Versions mentioned in the description apply only to the upstream kernel-rt
package and not the kernel-rt
package as distributed by RHEL
.
See How to fix?
for RHEL:7
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
block: Fix the maximum minor value is blk_alloc_ext_minor()
ida_alloc_range(..., min, max, ...) returns values from min to max, inclusive.
So, NR_EXT_DEVT is a valid idx returned by blk_alloc_ext_minor().
This is an issue because in device_add_disk(), this value is used in: ddev->devt = MKDEV(disk->major, disk->first_minor); and NR_EXT_DEVT is '(1 << MINORBITS)'.
So, should 'disk->first_minor' be NR_EXT_DEVT, it would overflow.