Category Archives: FreeBSD

FreeBSD

FreeBSD: Kernel memory disclosure in procfs and linprocfs

(Dec 2) The implementation of the /proc/curproc/cmdline pseudofile in the procfs(5) file system on FreeBSD 4.x and 5.x, and of the /proc/self/cmdline pseudofile in the linprocfs(5) file system on FreeBSD 5.x reads a process’ argument vector from the process address space. During this operation, a pointer was dereferenced directly without the necessary validation steps being performed.

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