CVE-2026-40336 | gphoto libgphoto2 up to 2.5.33 camlibs/ptp2/ptp-pack.c ptp_unpack_Sony_DPD memory leak (GHSA-g8xw-p5wj-mrxv)

VDB-358169 · CVE-2026-40336 · GHSA-G8XW-P5WJ-MRXV GPHOTO LIBGPHOTO2 UP TO 2.5.33 CAMLIBS/PTP2/PTP-PACK.C PTP_UNPACK_SONY_DPD MEMORY LEAK HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 2.3 $0-$5k 4.13 Summaryinfo A vulnerability was found in gphoto libgphoto2 up to 2.5.33. It has been rated as problematic. This impacts the function ptp_unpack_Sony_DPD of the file camlibs/ptp2/ptp-pack.c. The manipulation leads to memory leak. This vulnerability is traded as CVE-2026-40336. It is possible to launch the attack on the physical device. There is no exploit available. It is suggested to install a patch to address this issue. Detailsinfo A vulnerability was found in gphoto libgphoto2 up to 2.5.33 and classified as problematic. This issue affects the function ptp_unpack_Sony_DPD of the file camlibs/ptp2/ptp-pack.c. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability. The summary by CVE is: 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. The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-40336 since 04/11/2026. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. Applying the patch 404ff02c75f3cb280196fc260a63c4d26cf1a8f6 is able to eliminate this problem. The bugfix is ready for download at github.com. Productinfo Vendor gphoto Name libgphoto2 Version 2.5.0 2.5.1 2.5.2 2.5.3 2.5.4 2.5.5 2.5.6 2.5.7 2.5.8 2.5.9 2.5.10 2.5.11 2.5.12 2.5.13 2.5.14 2.5.15 2.5.16 2.5.17 2.5.18 2.5.19 2.5.20 2.5.21 2.5.22 2.5.23 2.5.24 2.5.25 2.5.26 2.5.27 2.5.28 2.5.29 2.5.30 2.5.31 2.5.32 2.5.33 License open-source Website Product: https://github.com/gphoto/libgphoto2/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 2.4 VulDB Meta Temp Score: 2.3 VulDB Base Score: 2.4 VulDB Temp Score: 2.3 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 2.4 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Memory leak CWE: CWE-401 / CWE-404 CAPEC: 🔒 ATT&CK: 🔒 Physical: Yes Local: Yes Remote: No Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Patch Status: 🔍 0-Day Time: 🔒 Patch: 404ff02c75f3cb280196fc260a63c4d26cf1a8f6 Timelineinfo 04/11/2026 CVE reserved 04/18/2026 +7 days Advisory disclosed 04/18/2026 +0 days VulDB entry created 04/18/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-g8xw-p5wj-mrxv Status: Confirmed CVE: CVE-2026-40336 (🔒) GCVE (CVE): GCVE-0-2026-40336 GCVE (VulDB): GCVE-100-358169 Entryinfo Created: 04/18/2026 09:02 Changes: 04/18/2026 09:02 (67) Complete: 🔍 Cache ID: 99:040:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸