Bug 2459367 (CVE-2026-40340)

Summary: CVE-2026-40340 libgphoto2: libgphoto2: Information disclosure and denial of service via out-of-bounds read
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in libgphoto2, a library for camera access and control. An out-of-bounds read vulnerability exists in the `ptp_unpack_OI()` function due to insufficient validation. A local attacker could exploit this by crafting specific input related to the Samsung Galaxy 64-bit objectsize detection heuristic. This could lead to information disclosure or a denial of service by causing the application to crash.
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Description OSIDB Bzimport 2026-04-18 00:01:55 UTC
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.