CISA is warning that a newly-disclosed Linux kernel bug dubbed "CopyFail" is already being exploited, just days after researchers dropped a working root-level exploit. Tracked as CVE-2026-31431, the ...

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U.S. cybersecurity agency CISA says the CopyFail bug is being actively used in hacking campaigns, and poses a major risk to servers and datacenters that rely on Linux.

CVE-2026-31431 CVSS 7.8 flaw since 2017 enables root via 732-byte exploit, impacting major Linux distributions.

The discoverers have named the root vulnerability "Copy Fail". All major distributions since 2017 are affected.

Copy Fail (CVE-2026-31431) is a severe logic flaw in the Linux kernel affecting every distribution since 2017. Patch your ...

Learn how to fix Copy Fail (CVE-2026-31431) in Ubuntu and Linux Mint. Copy Fail vulnerability allows any local user gain root ...

The critical "Copy Fail" bug (CVE-2026-31431) affects all Linux kernels since 2017, allowing unprivileged local users to gain ...

An exploit has been published for a local privilege escalation vulnerability dubbed "Copy Fail" that impacts Linux kernels ...

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