| Message ID | 20241012085620.746-1-pali@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Allow to choose symlink and socket type | expand |
diff --git a/fs/smb/client/reparse.c b/fs/smb/client/reparse.c index b9a50eb03522..3de91331c96c 100644 --- a/fs/smb/client/reparse.c +++ b/fs/smb/client/reparse.c @@ -1083,6 +1083,11 @@ int parse_reparse_point(struct reparse_data_buffer *buf, case IO_REPARSE_TAG_LX_FIFO: case IO_REPARSE_TAG_LX_CHR: case IO_REPARSE_TAG_LX_BLK: + if (le16_to_cpu(buf->ReparseDataLength) != 0) { + cifs_dbg(VFS, "srv returned malformed buffer for reparse point: 0x%08x\n", + le32_to_cpu(buf->ReparseTag)); + return -EIO; + } break; default: cifs_tcon_dbg(VFS | ONCE, "unhandled reparse tag: 0x%08x\n",
WSL socket, fifo, char and block devices have empty reparse buffer. Validate the length of the reparse buffer. Signed-off-by: Pali Rohár <pali@kernel.org> --- fs/smb/client/reparse.c | 5 +++++ 1 file changed, 5 insertions(+)