CVE-2026-40335
libgphoto2 has OOB read in ptp_unpack_DPV() UINT128/INT128 handling in ptp-pack.c
- State
- Published
- Severity
- 5.2 Medium
- Published
- Apr 17, 2026
- Updated
- Apr 20, 2026
- Reserved
- Apr 10, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.2 Medium | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L | GitHub_M |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
libgphoto2gphoto |
|
References
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