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-rw-r--r--fs/ksmbd/vfs.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/ksmbd/vfs.c b/fs/ksmbd/vfs.c
index c23793469645..ea139078b4b7 100644
--- a/fs/ksmbd/vfs.c
+++ b/fs/ksmbd/vfs.c
@@ -1539,6 +1539,11 @@ int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn,
}
*pntsd = acl.sd_buf;
+ if (acl.sd_size < sizeof(struct smb_ntsd)) {
+ pr_err("sd size is invalid\n");
+ goto out_free;
+ }
+
(*pntsd)->osidoffset = cpu_to_le32(le32_to_cpu((*pntsd)->osidoffset) -
NDR_NTSD_OFFSETOF);
(*pntsd)->gsidoffset = cpu_to_le32(le32_to_cpu((*pntsd)->gsidoffset) -