PT-2026-33537 · Gphotos · Libgphoto2

Published 2026-04-17 · Updated 2026-04-18 · CVE-2026-40339

NVD

CVSS v3.1

5.2

Medium

AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

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 Sony DPD() in camlibs/ptp2/ptp-pack.c (line 842). The function reads the FormFlag byte via dtoh8o(data, *poffset) without a prior bounds check. The standard ptp unpack DPD() at lines 686–687 correctly validates *offset + sizeof(uint8 t) > dpdlen before this same read, but the Sony variant omits this check entirely. Commit 09f8a940b1e418b5693f5c11e3016a1ad2cea62d fixes the issue.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-40339

Affected Products

Libgphoto2

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-40339 · Security Note
• https://github.com/gphoto/libgphoto2/security/advisories/GHSA-42cm-m9hc-r7q8 · Note
• https://github.com/gphoto/libgphoto2/commit/09f8a940b1e418b5693f5c11e3016a1ad2cea62d · Note