Alma 9 might be affected, but the mitigation won't work · Issue #62 · theori-io/copy-fail-CVE-2026-31431
I didn't test the exploit yet, but I noticed that Alma 9 (and possibly RedHat) have compiled the whole crypto algorithm API in kernel: $ grep -i alg /boot/config-5.14.0-611.49.1.el9_7.x86_64 CONFIG...