Description
Integer overflow in the pipe_build_write_buffer function (sys/kern/sys_pipe.c) in the direct write optimization feature in the pipe implementation in FreeBSD 7.1 through 7.2 and 6.3 through 6.4 allows local users to bypass virtual-to-physical address lookups and read sensitive information in memory pages via unspecified vectors.
References
- freebsd-directpipe-info-disclosure(51109) vdb-entry
- http://security.freebsd.org/patches/SA-09:09/pipe.patch
- 35279 vdb-entry
- 35398 third-party-advisory
- 55044 vdb-entry
- 1022365 vdb-entry
- FreeBSD-SA-09:09 vendor-advisory