Linux Kernel CVE-2026-64005

Vendor-released patch: upgrade to a fixed stable kernel - 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.93, 6.18.35, 7.0.12, or 7.1 or later on the corresponding branch. Apply your distribution's kernel update that incorporates the upstream commits listed at git.kernel.org/stable/c/9e4389b0038781f19f97895186ed941ff8ac1678 (and sibling per-branch commits) and reboot to load the corrected kernel. Where immediate patching is not possible, the most effective compensating control is to prevent use of the SMC protocol family: blacklist the smc kernel module (e.g. via modprobe blacklist and install /bin/false, then confirm it is not already loaded) so the vulnerable smc_init() path is never exercised - the trade-off is that any workload relying on SMC-R/SMC-D RDMA acceleration will lose that capability. On systems that do not use SMC this control has no functional impact. Verify remediation with uname -r against the fixed versions above; do not rely on invented version numbers beyond those in the advisory.