Linux kernel LPEs: ZcopyReaper (CVE-2026-43502) and 20 more

<p>Posted by Yuan Tan on Sep 07</p>Hi all,<br /> <br /> We found a Linux kernel local privilege escalation vulnerability in the<br /> RDS zerocopy send path, tracked as CVE-2026-43502. We call the exploit<br /> ZcopyReaper.<br /> <br /> The vulnerability was introduced in Linux v4.17 and fixed by commit<br /> 44b550d88b26. The first mainline release containing the fix was Linux<br /> v7.1-rc3.<br