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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-17 02:25:44 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-17 02:25:44 -0300 |
| commit | 5b465b045af3a649a89b8a5c5bfdece20ffc0345 (patch) | |
| tree | 934f851eaec863864e15fa7ef9514a445a9e88ff /fs/namei.c | |
| parent | 0520a938e11c34a5ffc422b9316b85e294b0fbb2 (diff) | |
Linux-libre 4.7.4-gnupck-4.7.4-gnu
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/namei.c b/fs/namei.c index 70580ab14..9281b2bf0 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -901,6 +901,7 @@ static inline int may_follow_link(struct nameidata *nd) { const struct inode *inode; const struct inode *parent; + kuid_t puid; if (!sysctl_protected_symlinks) return 0; @@ -916,7 +917,8 @@ static inline int may_follow_link(struct nameidata *nd) return 0; /* Allowed if parent directory and link owner match. */ - if (uid_eq(parent->i_uid, inode->i_uid)) + puid = parent->i_uid; + if (uid_valid(puid) && uid_eq(puid, inode->i_uid)) return 0; if (nd->flags & LOOKUP_RCU) |