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#cve-2026-31431

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The Copy Fail launch graphic showing a stylized terminal prompt and the title text on a dark background.
Security·

'Copy Fail' lets a 732-byte script grab root on Ubuntu, RHEL, and SUSE. Patched April 29.

CVE-2026-31431 chains AF_ALG and splice() to write into the page cache of /usr/bin/su. Xint Code disclosed it on April 29, nine years after the bug shipped.