ptrace_may_dream

ptracemaydream CVE-2026-46333 针对 pidfdgetfd2 中 ptracemayaccess mm=NULL 竞态条件的本地权限提升漏洞利用程序。 当进程正在消亡且其 mm 已被释放时，内核会完全跳过 ptrace 访问检查。通过让 pidfdgetfd 与进程退出进行竞争，非特权用户可以窃取特权进程的打开文件描述符。 该漏洞利用程序针对 accounts-daemon：它通过 SetIconFile 触发一个短生命周期子进程，赢得竞争以获取守护进程的 D-Bus 套接字文件描述符，然后发送 SetShell、SetAccountType 和...

AZL-93840 CVE-2026-64371 affecting package kernel for versions less than 6.6.145.2-1

In the Linux kernel, the following vulnerability has been resolved: proc: protect ptracemayaccess with execupdatelock part 1 Fix the easy cases where procfs currently calls ptracemayaccess without execupdatelock protection, where the fix is to simply add the extra lock or use mmaccess: -...

CVE-2026-64371 proc: protect ptrace_may_access() with exec_update_lock (part 1)

In the Linux kernel, the following vulnerability has been resolved: proc: protect ptracemayaccess with execupdatelock part 1 Fix the easy cases where procfs currently calls ptracemayaccess without execupdatelock protection, where the fix is to simply add the extra lock or use mmaccess: -...

NewStart CGSL CORE 5.05 / MAIN 5.05 : kernel-rt Multiple Vulnerabilities (NS-SA-2020-0117)

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has kernel-rt packages installed that are affected by multiple vulnerabilities: - The fix for CVE-2019-11599, affecting the Linux kernel before 5.0.10 was not complete. A local user could use this flaw to obtain sensitive...

CVE-2019-3901

A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. As no relevant locks in particular the credguardmutex are held during the ptracemayaccess call, it is possible for the specified target task to perform an execve syscall with setuid execution...

CVE-2019-3901

A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. As no relevant locks in particular the credguardmutex are held during the ptracemayaccess call, it is possible for the specified target task to perform an execve syscall with setuid execution...

Race condition

A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. As no relevant locks in particular the credguardmutex are held during the ptracemayaccess call, it is possible for the specified target task to perform an execve syscall with setuid execution...

CVE-2019-3901

A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. As no relevant locks in particular the credguardmutex are held during the ptracemayaccess call, it is possible for the specified target task to perform an execve syscall with setuid execution...

CVE-2019-3901

A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. As no relevant locks in particular the credguardmutex are held during the ptracemayaccess call, it is possible for the specified target task to perform an execve syscall with setuid execution...

CVE-2019-3901

A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. As no relevant locks in particular the credguardmutex are held during the ptracemayaccess call, it is possible for the specified target task to perform an execve syscall with setuid execution...

CVE-2019-11190

The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs such as /bin/su because installexeccreds is called too late in loadelfbinary in fs/binfmtelf.c, and thus the ptracemayaccess check has a race condition when reading /proc/pid/stat...

Race condition

The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs such as /bin/su because installexeccreds is called too late in loadelfbinary in fs/binfmtelf.c, and thus the ptracemayaccess check has a race condition when reading /proc/pid/stat...

CVE-2019-11190

The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs such as /bin/su because installexeccreds is called too late in loadelfbinary in fs/binfmtelf.c, and thus the ptracemayaccess check has a race condition when reading /proc/pid/stat...

CVE-2019-11190

The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs such as /bin/su because installexeccreds is called too late in loadelfbinary in fs/binfmtelf.c, and thus the ptracemayaccess check has a race condition when reading /proc/pid/stat...

Linux Kernel (Ubuntu 14.04.3) - perf_event_open() Can Race with execve() (Access etcshadow)

Linux Kernel Ubuntu 14.04.3 - perfeventopen Can Race with execve Access etcshadow Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=807 A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. perfeventopen associates with a task as...