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CVE-2026-40336— libgphoto2 has memory leak in ptp_unpack_Sony_DPD() secondary enumeration list in ptp-pack.c

CVSS 2.4 · Low EPSS 0.01% · P1
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I. Basic Information for CVE-2026-40336

Vulnerability Information
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Vulnerability Title
libgphoto2 has memory leak in ptp_unpack_Sony_DPD() secondary enumeration list in ptp-pack.c
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: NVD (National Vulnerability Database)
Vulnerability Title
libgphoto2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libgphoto2是gPhoto开源的一个数码相机访问与控制库。 libgphoto2 2.5.33及之前版本存在安全漏洞，该漏洞源于ptp_unpack_Sony_DPD函数存在内存泄漏问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
gphotolibgphoto2 <= 2.5.33 -

II. Public POCs for CVE-2026-40336

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III. Intelligence Information for CVE-2026-40336

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Same Patch Batch · gphoto · 2026-04-17 · 8 CVEs total

CVE-2026-403406.1 MEDIUMlibgphoto2 has OOB read in ptp_unpack_OI() in ptp-pack.c via malicious PTP ObjectInfo resp
CVE-2026-403336.1 MEDIUMlibgphoto2 has OOB read in ptp_unpack_EOS_ImageFormat() and ptp_unpack_EOS_CustomFuncEx()
CVE-2026-403395.2 MEDIUMlibgphoto2 has OOB read in ptp_unpack_Sony_DPD() FormFlag parsing in ptp-pack.c
CVE-2026-403385.2 MEDIUMlibgphoto2 has OOB read in ptp_unpack_Sony_DPD() enumeration count parsing in ptp-pack.c
CVE-2026-403355.2 MEDIUMlibgphoto2 has OOB read in ptp_unpack_DPV() UINT128/INT128 handling in ptp-pack.c
CVE-2026-403343.5 LOWlibgphoto2 missing null termination in ptp_unpack_Canon_FE() filename buffer in ptp-pack.c
CVE-2026-403413.5 LOWlibgphoto2 has an OOB Read in ptp_unpack_EOS_FocusInfoEx

IV. Related Vulnerabilities

Same product: libgphoto2
Same vendor: gphoto
Same weakness: CWE-401

V. Comments for CVE-2026-40336

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