First published: Tue Jul 02 2013(Updated: )
The vm_map_lookup function in sys/vm/vm_map.c in the mmap implementation in the kernel in FreeBSD 9.0 through 9.1-RELEASE-p4 does not properly determine whether a task should have write access to a memory location, which allows local users to bypass filesystem write permissions and consequently gain privileges via a crafted application that leverages read permissions, and makes mmap and ptrace system calls.
Credit: secalert@redhat.com
Affected Software | Affected Version | How to fix |
---|---|---|
FreeBSD FreeBSD | =9.0 | |
FreeBSD FreeBSD | =9.1 | |
FreeBSD FreeBSD | =9.1-p4 |
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