MediumFix available
libgphoto2 — security advisory
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.
- Products
- libgphoto2
- Affected versions
- 2.5.30-1, 2.5.31-1, 2.5.31-2, 2.5.31-2.1, 2.5.31-2.1~exp1, 2.5.31-3, 2.5.31-4, 2.5.32-1, 2.5.33-1, 2.5.34-1, 2.5.34-2
- Fixed versions
- 2.5.34-1
- CVEs
- CVE-2026-40339
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:18 UTC · Revision 1
Source evidence
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.
osv:DEBIAN-CVE-2026-40339
libgphoto2
Fixed versions: Not specified
libgphoto2
Fixed versions: Not specified
libgphoto2
Fixed versions: 2.5.34-1
Complete source record
{
"id": "8614d751e2f94c5bcc0b77091ab5738874f58434c621e4b2e72e27f6d8fe1b39",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-40339",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-40339",
"summary": "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.",
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"modified": "2026-10-26T11:47:29.100774344Z",
"provider": "osv",
"upstream": [
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"references": [
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},
"source_id": "core-osv",
"document_id": 450843,
"published_at": "2026-04-18T00:16:37.947+00:00"
}