Linux Kernel EUVD-2026-48658

Upgrade the Linux kernel to a patched stable release: 7.1.3, 5.10.260, 5.15.211, 6.1.177, 6.6.144, 6.12.95, or 6.18.38, depending on which stable branch is in use; kernel 7.2-rc1 also incorporates the fix. Upstream fix commits are indexed at https://git.kernel.org/stable/c/e918942bcc5355ad5b44ba557935dffc0727b0eb and the additional branch-specific commits in the CVE references. Linux distribution vendors (RHEL, Debian, Ubuntu, SLES) are expected to carry these fixes in their normal kernel security update streams. As a targeted compensating control on hosts that do not use FPGA hardware, administrators can blacklist the fpga_region kernel module by adding blacklist fpga_region to /etc/modprobe.d/blacklist.conf and rebooting - this eliminates the vulnerable code path entirely with no impact on non-FPGA workloads. Verify module absence with lsmod | grep fpga. The trade-off is that any FPGA-dependent functionality will cease, which is acceptable on general-purpose servers.