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uselib: add missing MNT_NOEXEC check

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We don't allow loading ELF shared library from noexec points so the
same should apply to sys_uselib aswell.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Ulrich Drepper <drepper@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2007-05-23 13:57:53 -07:00 committed by Linus Torvalds
parent 5a1b639148
commit 492c8b332e
1 changed files with 3 additions and 0 deletions
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3
fs/exec.c
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@ -134,6 +134,9 @@ asmlinkage long sys_uselib(const char __user * library)
if (error)
goto out;
error = -EACCES;
if (nd.mnt->mnt_flags & MNT_NOEXEC)
goto exit;
error = -EINVAL;
if (!S_ISREG(nd.dentry->d_inode->i_mode))
goto exit;