libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds read in "ptp_unpack_DPV()" in "camlibs/ptp2/ptp-pack.c" (lines 622–629). The UINT128 and INT128 cases advance "*offset += 16" without verifying that 16 bytes remain in the buffer. The entry check at line 609 only guarantees "*offset < total" (at least 1 byte available), leaving up to 15 bytes unvalidated. Commit 433bde9888d70aa726e32744cd751d7dbe94379a patches the issue.