Log in Start free

Vulnerability · Published Apr 17, 2026 · Assigned by GitHub_M

CVE-2026-40340libgphoto2 has OOB read in ptp_unpack_OI() in ptp-pack.c via malicious PTP ObjectInfo response

Medium 6.1

In plain English

A medium-severity out-of-bounds read 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 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.2%top 87.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds read vulnerability in `ptp_unpack_OI()` in `camlibs/ptp2/ptp-pack.c` (lines 530–563). The function validates `len < PTP_oi_SequenceNumber` (i.e., len < 48) but subsequently accesses offsets 48–56, up to 9 bytes beyond the validated boundary, via the Samsung Galaxy 64-bit objectsize detection heuristic. Commit 7c7f515bc88c3d0c4098ac965d313518e0ccbe33 fixes the issue.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libgphoto2no fix listedDEBIAN-CVE-2026-40340
Debian:13libgphoto2no fix listedDEBIAN-CVE-2026-40340
Debian:14libgphoto22.5.34-1DEBIAN-CVE-2026-40340
Ubuntu:22.04:LTSlibgphoto22.5.27-1ubuntu0.1USN-8586-1
Ubuntu:22.04:LTSlibgphoto22.5.27-1ubuntu0.1UBUNTU-CVE-2026-40340
Ubuntu:24.04:LTSlibgphoto22.5.31-2.1ubuntu1.1USN-8586-1
Ubuntu:24.04:LTSlibgphoto22.5.31-2.1ubuntu1.1UBUNTU-CVE-2026-40340
Ubuntu:25.10libgphoto2no fix listedUBUNTU-CVE-2026-40340
Ubuntu:26.04:LTSlibgphoto22.5.33-1ubuntu1.1UBUNTU-CVE-2026-40340
Ubuntu:26.04:LTSlibgphoto22.5.33-1ubuntu1.1USN-8586-1

Affected products (as reported)

VendorProductVersions
gphoto libgphoto2 <= 2.5.33

Weakness: CWE-125 · Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References