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

IT之家 4 月 30 日消息，科技媒体 cyberkendra 昨日（4 月 29 日）发布博文，报道称 Linux 内核爆出高危漏洞 Copy Fail，追踪编号为 CVE-2026-31431， 仅需一个 732 字节的 Python 脚本，就能攻破几乎所有主流 Linux 发行版本，提权至最高的 root 权限。

CISA warns that the nine-year-old Linux Copy Fail flaw is being actively exploited, allowing local attackers to gain root ...

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

CISA has warned that threat actors have started exploiting the "Copy Fail" Linux security vulnerability in the wild, one day ...

Copy Fail could represent a significant security risk in the making. The vulnerability was discovered by researchers at ...

Copy Fail, a logic bug in the Linux kernel, allows users to write 4-byte code into other files’ page cache and achieve root ...

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