# CVE-2026-40340: libgphoto2-6: libgphoto2 is a camera access and control library

CVE-2026-40340 is fixed in 6 products on 1 platform, first by libgphoto2-6 2.5.27-1ubuntu0.1, released April 17, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-40340
- Priority: Routine
- CVSS: 6.1 (Medium)
- EPSS: 0.0022
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 17, 2026

## Description

libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds read vulnerability in `ptp_unpack_OI()` in `camlibs/ptp2/ptp-pack.c` (lines 530–563). The function validates `len < PTP_oi_SequenceNumber` (i.e., len < 48) but subsequently accesses offsets 48–56, up to 9 bytes beyond the validated boundary, via the Samsung Galaxy 64-bit objectsize detection heuristic. Commit 7c7f515bc88c3d0c4098ac965d313518e0ccbe33 fixes the issue.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libgphoto2 Debian 14 | 2.5.34-1 | [DEBIAN-CVE-2026-40340](https://patchblox.com/security/data/fix/linux/debian-cve-2026-40340.md) | Apr 18, 2026 |
| Linux | libgphoto2-6 Ubuntu 22.04.1 LTS (jammy) | 2.5.27-1ubuntu0.1 | [libgphoto2-6 2.5.27-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgphoto2-6-2.5.27-1ubuntu0.1.md) | Apr 17, 2026 |
| Linux | libgphoto2-6t64 Ubuntu 24.04.5 LTS (noble) | 2.5.31-2.1ubuntu1.1 | [libgphoto2-6t64 2.5.31-2.1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgphoto2-6t64-2.5.31-2.1ubuntu1.1.md) | Apr 17, 2026 |
| Linux | libgphoto2-6t64 Ubuntu 26.04.1 LTS (resolute) | 2.5.33-1ubuntu1.1 | [libgphoto2-6t64 2.5.33-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgphoto2-6t64-2.5.33-1ubuntu1.1.md) | Apr 17, 2026 |
| Linux | libgphoto2-l10n Ubuntu 22.04.1 LTS (jammy) | 2.5.27-1ubuntu0.1 | [libgphoto2-l10n 2.5.27-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgphoto2-l10n-2.5.27-1ubuntu0.1.md) | Apr 17, 2026 |
| Linux | libgphoto2-l10n Ubuntu 24.04.5 LTS (noble) | 2.5.31-2.1ubuntu1.1 | [libgphoto2-l10n 2.5.31-2.1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgphoto2-l10n-2.5.31-2.1ubuntu1.1.md) | Apr 17, 2026 |
| Linux | libgphoto2-l10n Ubuntu 26.04.1 LTS (resolute) | 2.5.33-1ubuntu1.1 | [libgphoto2-l10n 2.5.33-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgphoto2-l10n-2.5.33-1ubuntu1.1.md) | Apr 17, 2026 |
| Linux | libgphoto2-port12 Ubuntu 22.04.1 LTS (jammy) | 2.5.27-1ubuntu0.1 | [libgphoto2-port12 2.5.27-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgphoto2-port12-2.5.27-1ubuntu0.1.md) | Apr 17, 2026 |
| Linux | libgphoto2-port12t64 Ubuntu 24.04.5 LTS (noble) | 2.5.31-2.1ubuntu1.1 | [libgphoto2-port12t64 2.5.31-2.1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgphoto2-port12t64-2.5.31-2.1ubuntu1.1.md) | Apr 17, 2026 |
| Linux | libgphoto2-port12t64 Ubuntu 26.04.1 LTS (resolute) | 2.5.33-1ubuntu1.1 | [libgphoto2-port12t64 2.5.33-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgphoto2-port12t64-2.5.33-1ubuntu1.1.md) | Apr 17, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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