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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 <[email protected]>
Cc: Ulrich Drepper <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Christoph Hellwig 2007-05-23 13:57:53 -07:00 • committed by Linus Torvalds
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;