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_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.

INFO

Published Date :

2026-04-17T23:42:32.586Z

Last Modified :

2026-04-20T14:56:21.979Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-40339 vulnerability.

Vendors Products
Gphoto
  • Libgphoto2
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-40339.

URL Resource
https://github.com/gphoto/libgphoto2/commit/09f8a940b1e418b5693f5c11e3016a1ad2cea62d cve-icon cve-icon cve-icon
https://github.com/gphoto/libgphoto2/security/advisories/GHSA-42cm-m9hc-r7q8 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-40339 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-40339 cve-icon
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