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Description

libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, a missing null terminator exists in ptp_unpack_Canon_FE() in camlibs/ptp2/ptp-pack.c (line 1377). The function copies a filename into a 13-byte buffer using strncpy without explicitly null-terminating the result. If the source data is exactly 13 bytes with no null terminator, the buffer is left unterminated, leading to out-of-bounds reads in any subsequent string operation. Commit 259fc7d3bfe534ce4b114c464f55b448670ab873 patches the issue.

PUBLISHED Reserved 2026-04-10 | Published 2026-04-17 | Updated 2026-04-20 | Assigner GitHub_M




LOW: 3.5CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Problem types

CWE-170: Improper Null Termination

Product status

<= 2.5.33
affected

References

github.com/...photo2/security/advisories/GHSA-ph87-cc3j-c6hm

github.com/...ommit/259fc7d3bfe534ce4b114c464f55b448670ab873

cve.org (CVE-2026-40334)

nvd.nist.gov (CVE-2026-40334)

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