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CVE-2026-40335

libgphoto2 has OOB read in ptp_unpack_DPV() UINT128/INT128 handling in ptp-pack.c

Published: Apr 17, 2026Updated: Apr 17, 2026 Sources: CVE List
NVD MITRE
5.2CVSS
MEDIUM

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_DPV()` in `camlibs/ptp2/ptp-pack.c` (lines 622–629). The UINT128 and INT128 cases advance `*offset += 16` without verifying that 16 bytes remain in the buffer. The entry check at line 609 only guarantees `*offset < total` (at least 1 byte available), leaving up to 15 bytes unvalidated. Commit 433bde9888d70aa726e32744cd751d7dbe94379a patches the issue.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:PAC:LPR:NUI:NS:UC:HI:NA:L
Exploitability
AV:PAttack Vector
Physical
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:LAvailability
Low

Weaknesses

CWE-125CWE-125: Out-of-bounds Read

Affected Products

libgphoto2
gphoto

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/gphoto/libgphoto2/security/advisories/GHSA-g4g5-c2x9-cqfj
github.com
https://github.com/gphoto/libgphoto2/commit/433bde9888d70aa726e32744cd751d7dbe94379a
github.com

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