Restore modified path after lstat

check_symlinks is intended to check each component of a path, but failed
to restore the stripped trailing components after each iteration,
leaving a NUL byte in the middle of the path.

diff --git a/libarchive/archive_write_disk_posix.c b/libarchive/archive_write_disk_posix.c
index 0fc61930c2ed8449d12fe56223082c67be9e2e04..1eb0e91d71dcdba268e0560245a149a8eedf0b34 100644 (file)
--- a/libarchive/archive_write_disk_posix.c
+++ b/libarchive/archive_write_disk_posix.c
@@ -2447,6 +2447,9 @@ check_symlinks(struct archive_write_disk *a)
                                return (ARCHIVE_FAILED);
                        }
                }
+               pn[0] = c;
+               if (pn[0] != '\0')
+                       pn++; /* Advance to the next segment. */
        }
        pn[0] = c;
        /* We've checked and/or cleaned the whole path, so remember it. */