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Test your applicationsThere is no fixed version for Centos:9
kernel-ipaclones-internal
.
Note: Versions mentioned in the description apply only to the upstream kernel-ipaclones-internal
package and not the kernel-ipaclones-internal
package as distributed by Centos
.
See How to fix?
for Centos:9
relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
s390/pkey: Prevent overflow in size calculation for memdup_user()
Number of apqn target list entries contained in 'nr_apqns' variable is determined by userspace via an ioctl call so the result of the product in calculation of size passed to memdup_user() may overflow.
In this case the actual size of the allocated area and the value describing it won't be in sync leading to various types of unpredictable behaviour later.
Use a proper memdup_array_user() helper which returns an error if an overflow is detected. Note that it is different from when nr_apqns is initially zero - that case is considered valid and should be handled in subsequent pkey_handler implementations.
Found by Linux Verification Center (linuxtesting.org).