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Fencer Vulns
low 2.4

CVE-2026-40336 json

libgphoto2 has memory leak in ptp_unpack_Sony_DPD() secondary enumeration list in ptp-pack.c

published 2026-04-17 6 mo ago modified 2026-10-26 13 d ago also EUVD-2026-23587

cvss
2.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits
0
none known

Summary

libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have a memory leak in `ptp_unpack_Sony_DPD()` in `camlibs/ptp2/ptp-pack.c` (lines 884–885). When processing a secondary enumeration list (introduced in 2024+ Sony cameras), the function overwrites dpd->FORM.Enum.SupportedValue with a new calloc() without freeing the previous allocation from line 857. The original array and any string values it contains are leaked on every property descriptor parse. Commit 404ff02c75f3cb280196fc260a63c4d26cf1a8f6 fixes the issue.

Patch / fix

  • libgphoto2 Debian 14 2.5.34-1

debian advisories DEBIAN-CVE-2026-40336

  • libgphoto2 Ubuntu 26.04 LTS 2.5.33-1ubuntu1.1

ubuntu advisories UBUNTU-CVE-2026-40336

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libgphoto2 openSUSE Tumbleweed 2.5.34-1.1

opensuse advisories openSUSE-SU-2026:10916-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-40336 updated cvss 4.3

libgphoto2: libgphoto2: Memory leak in ptp_unpack_Sony_DPD() can lead to denial of service

  • Red Hat Enterprise Linux 6 libgphoto2 Red Hat Enterprise Linux 7 libgphoto2 Red Hat Enterprise Linux 8 libgphoto2 Red Hat Enterprise Linux 9 libgphoto2 Red Hat Enterprise Linux 10 libgphoto2
    under investigation

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
6 mo ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.4 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

  • gphoto libgphoto2

Classification

Weakness
  • CWE-401 Missing Release of Memory after Effective Lifetime

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.