CVE-2026-40333

MEDIUM

libgphoto2 has OOB read in ptp_unpack_EOS_ImageFormat() and ptp_unpack_EOS_CustomFuncEx() due to missing length parameter in ptp-pack.c

Title source: cna

Description

libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, two functions in camlibs/ptp2/ptp-pack.c accept a data pointer but no length parameter, performing unbounded reads. Their callers in ptp_unpack_EOS_events() have xsize available but never pass it, leaving both functions unable to validate reads against the actual buffer boundary. Commit 1817ecead20c2aafa7549dac9619fe38f47b2f53 patches the issue.

References (2)

Scores

CVSS v3 6.1
EPSS 0.0002
EPSS Percentile 6.8%
Attack Vector PHYSICAL
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Details

CWE
CWE-125
Status published
Products (1)
gphoto/libgphoto2 <= 2.5.33
Published Apr 18, 2026
Tracked Since Apr 18, 2026