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Test your applicationsUpgrade RHEL:8
kernel-core
to version 0:4.18.0-372.19.1.el8_6 or higher.
This issue was patched in RHSA-2022:5819
.
Note: Versions mentioned in the description apply only to the upstream kernel-core
package and not the kernel-core
package as distributed by RHEL
.
See How to fix?
for RHEL:8
relevant fixed versions and status.
net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.