CVE-2023-42756

A flaw was found in the Netfilter subsystem of the Linux kernel. A race condition between IPSET_CMD_ADD and IPSET_CMD_SWAP can lead to a kernel panic due to the invocation of __ip_set_put on a wrong set. This issue may allow a local user to crash the system.

Red Hat Enterprise Linux 6, 7 and 8 are not affected by this CVE as they did not include the upstream commit that introduced this flaw: https://github.com/torvalds/linux/commit/24e2278. The same holds true for Red Hat Enterprise Linux 9 prior to version 9.3, meaning that this CVE only affects RHEL 9.3 and later versions.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.