RHSA-2023:5235: Important: kpatch-patch security update
This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.Security Fix(es): kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390) kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128) kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2023:5235?
The severity of RHSA-2023:5235 is classified as high due to the potential for unauthenticated access to system resources.
How do I fix RHSA-2023:5235?
To fix RHSA-2023:5235, update your system to the recommended kpatch-patch version specified in the advisory.
Which systems are affected by RHSA-2023:5235?
RHSA-2023:5235 affects installations of Red Hat Enterprise Linux that utilize the vulnerable kpatch-patch versions.
What component of the system does RHSA-2023:5235 address?
RHSA-2023:5235 addresses a vulnerability in the kernel live patch module related to a use-after-free (UAF) issue in nftables.
Is there a workaround for RHSA-2023:5235?
There are no specific workarounds provided for RHSA-2023:5235; applying the available updates is the recommended action.