Vulnerability · Published Apr 17, 2026 · Assigned by GitHub_M
CVE-2026-40336libgphoto2 has memory leak in ptp_unpack_Sony_DPD() secondary enumeration list in ptp-pack.c
Low 2.4
In plain English
A low-severity memory leak in libgphoto2 from gphoto. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libgphoto2 | no fix listed | DEBIAN-CVE-2026-40336 |
| Debian:13 | libgphoto2 | no fix listed | DEBIAN-CVE-2026-40336 |
| Debian:14 | libgphoto2 | 2.5.34-1 | DEBIAN-CVE-2026-40336 |
| Ubuntu:22.04:LTS | libgphoto2 | 2.5.27-1ubuntu0.1 | USN-8586-1 |
| Ubuntu:24.04:LTS | libgphoto2 | 2.5.31-2.1ubuntu1.1 | USN-8586-1 |
| Ubuntu:25.10 | libgphoto2 | no fix listed | UBUNTU-CVE-2026-40336 |
| Ubuntu:26.04:LTS | libgphoto2 | 2.5.33-1ubuntu1.1 | USN-8586-1 |
| Ubuntu:26.04:LTS | libgphoto2 | 2.5.33-1ubuntu1.1 | UBUNTU-CVE-2026-40336 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| gphoto | libgphoto2 | <= 2.5.33 |
Weakness: CWE-401 · Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L