CVE-2026-40339libgphoto2 has OOB read in ptp_unpack_Sony_DPD() FormFlag parsing in ptp-pack.c
Updated under an hour ago ()
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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.
- CVSS
- 5.2 MEDIUM (v3.1, CNA)CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
- Weakness (CWE)
- CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Apr 20, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
gphoto libgphoto2 gphoto:libgphoto2 (from the name) | through 2.5.33 | CNA record |
References
- https://github.com/gphoto/libgphoto2/security/advisories/GHSA-42cm-m9hc-r7q8x-refsource-confirm
- https://github.com/gphoto/libgphoto2/commit/09f8a940b1e418b5693f5c11e3016a1ad2cea62dx-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.