commit 67d52fae61c152a68924d94dcf0c569a96fa2f5d Author: Greg Kroah-Hartman Date: Fri Feb 15 09:09:54 2019 +0100 Linux 4.19.23 commit c2109f05b7fd5d2e5472f45dbcc343786c504719 Author: Linus Torvalds Date: Thu Feb 14 15:02:18 2019 -0800 Revert "exec: load_script: don't blindly truncate shebang string" commit cb5b020a8d38f77209d0472a0fea755299a8ec78 upstream. This reverts commit 8099b047ecc431518b9bb6bdbba3549bbecdc343. It turns out that people do actually depend on the shebang string being truncated, and on the fact that an interpreter (like perl) will often just re-interpret it entirely to get the full argument list. Reported-by: Samuel Dionne-Riel Acked-by: Kees Cook Cc: Oleg Nesterov Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman