CVE-2020-35508

A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.

• CWE-665
• CWE-362
• CWE-665

• https://bugzilla.redhat.com/show_bug.cgi?id=1902724Issue Tracking, Patch, Third Party Advisory
• https://github.com/torvalds/linux/commit/b4e00444cab4c3f3fec876dc0cccc8cbb0d1a948Patch, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210513-0006/Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1902724Issue Tracking, Patch, Third Party Advisory
• https://github.com/torvalds/linux/commit/b4e00444cab4c3f3fec876dc0cccc8cbb0d1a948Patch, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20210513-0006/Third Party Advisory

Published

Mar 26, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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