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Subject[PATCH] binfmt_misc.c, kernel-2.4.12
Date
Hello

I find bug in binfmt_misc.c from kernel 2.4.12 source. The read() syscal
return bad value, causes some application SIGSEGV.

Example:

# modprobe binfmt_misc
# echo ':Java:M::\xca\xfe\xba\xbe::/usr/local/bin/javawrapper:'
>/proc/sys/fs/binfmt_misc/register

# strace less /proc/sys/fs/binfmt_misc/Java
...............................................................
...............................................................
open("/proc/sys/fs/binfmt_misc/Java", O_RDONLY) = 3
lseek(3, 1, SEEK_SET) = 1
lseek(3, 0, SEEK_SET) = 0
read(3, "enabled\ninterpreter /usr/local/b"..., 64) = 71

^^^^^^^^
--- SIGSEGV (Segmentation fault) ---
+++ killed by SIGSEGV +++

I send a patch I wrote that correct this problem and do same cleanup, so
source and object are a bit smaller.

Albert Bartoszko
albertb@nt.kegel.com.pl


[unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream]
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