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-rw-r--r--security/selinux/hooks.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 6d0b1ccb5b99..ac79f9ef2da8 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -2711,12 +2711,18 @@ static int selinux_inode_permission(struct inode *inode, int mask)
2711static int selinux_inode_setattr(struct dentry *dentry, struct iattr *iattr) 2711static int selinux_inode_setattr(struct dentry *dentry, struct iattr *iattr)
2712{ 2712{
2713 const struct cred *cred = current_cred(); 2713 const struct cred *cred = current_cred();
2714 unsigned int ia_valid = iattr->ia_valid;
2715
2716 /* ATTR_FORCE is just used for ATTR_KILL_S[UG]ID. */
2717 if (ia_valid & ATTR_FORCE) {
2718 ia_valid &= ~(ATTR_KILL_SUID | ATTR_KILL_SGID | ATTR_MODE |
2719 ATTR_FORCE);
2720 if (!ia_valid)
2721 return 0;
2722 }
2714 2723
2715 if (iattr->ia_valid & ATTR_FORCE) 2724 if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID |
2716 return 0; 2725 ATTR_ATIME_SET | ATTR_MTIME_SET | ATTR_TIMES_SET))
2717
2718 if (iattr->ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID |
2719 ATTR_ATIME_SET | ATTR_MTIME_SET))
2720 return dentry_has_perm(cred, NULL, dentry, FILE__SETATTR); 2726 return dentry_has_perm(cred, NULL, dentry, FILE__SETATTR);
2721 2727
2722 return dentry_has_perm(cred, NULL, dentry, FILE__WRITE); 2728 return dentry_has_perm(cred, NULL, dentry, FILE__WRITE);