The address should be bigger than dac_mmap_min_addr, because a process with CAP_RAWIO can map a vma bellow mmap_min_addr.
Cc: Andrew Morton <[email protected]> Cc: Kees Cook <[email protected]> Cc: Cyrill Gorcunov <[email protected]> Cc: Serge Hallyn <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Cc: Eric Paris <[email protected]> Cc: James Morris <[email protected]> Signed-off-by: Andrey Vagin <[email protected]> --- kernel/sys.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sys.c b/kernel/sys.c index 265b376..e0e1bbd 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1868,7 +1868,7 @@ static int prctl_set_mm(int opt, unsigned long addr, if (opt == PR_SET_MM_EXE_FILE) return prctl_set_mm_exe_file(mm, (unsigned int)addr); - if (addr >= TASK_SIZE || addr < mmap_min_addr) + if (addr >= TASK_SIZE || addr < dac_mmap_min_addr) return -EINVAL; error = -EINVAL; -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
