Svante Signell, le Wed 28 Dec 2011 11:26:37 +0100, a écrit : > On Wed, 2011-12-28 at 10:33 +0100, Samuel Thibault wrote: > > Svante Signell, le Wed 28 Dec 2011 10:17:24 +0100, a écrit : > > > On GNU/Linux shortening the resolvedname vector from PATH_MAX to 64 > > > results in a stack corruption. This is not nice, but since that vector > > > is allocated on the stack, maybe it is more acceptable than an > > > environment corruption. > > > > Well, this is not surprising to get crashes when cheating with PATH_MAX: > > the kernel still thinks PATH_MAX is 4096, and thus thinks that the > > buffer is actually 4096 bytes long, and thus happily overwrites whatever > > is after it if userland doesn't make it so. > > Ok, this comparison was maybe not the best. The main problem remains, > for Hurd, how can a too short path string overwrite the environment > vector of strings?
Because the environment is just after main's arguments. Samuel
