{"id":"CVE-2026-40334","summary":"libgphoto2 missing null termination in ptp_unpack_Canon_FE() filename buffer in ptp-pack.c","details":"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.","aliases":["GHSA-ph87-cc3j-c6hm"],"modified":"2026-07-08T08:13:12.365075247Z","published":"2026-04-17T23:16:38.751Z","related":["openSUSE-SU-2026:10916-1"],"database_specific":{"cwe_ids":["CWE-170"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40334.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40334.json"},{"type":"ADVISORY","url":"https://github.com/gphoto/libgphoto2/security/advisories/GHSA-ph87-cc3j-c6hm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40334"},{"type":"FIX","url":"https://github.com/gphoto/libgphoto2/commit/259fc7d3bfe534ce4b114c464f55b448670ab873"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/gphoto/libgphoto2","events":[{"introduced":"0"},{"fixed":"259fc7d3bfe534ce4b114c464f55b448670ab873"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"last_affected":"2.5.33"}]}}],"versions":["v2.5.32","libgphoto2-2_5_32-release","v2.5.31","libgphoto2-2_5_31-release","v2.5.30","libgphoto2-2_5_30-release","v2.5.29","libgphoto2-2_5_29-release","v2.5.28","libgphoto2-2_5_28-release","v2.5.27","libgphoto2-2_5_27-release","v2.5.26","libgphoto2-2_5_26-release","v2.5.25","libgphoto2-2_5_25-release","v2.5.24","libgphoto2-2_5_24-release","libgphoto2-2_5_23-release","libgphoto2-2_5_22-release","libgphoto2-2_5_21-release","libgphoto2-2_5_20-release","libgphoto2-2_5_19-release","libgphoto2-2_5_18-release","libgphoto2-2_5_17-release","libgphoto2-2_5_16-release","libgphoto2-2_5_15-release","libgphoto2-2_5_14-release","libgphoto2-2_5_13-release","libgphoto2-2_5_12-release","libgphoto2-2_5_11-release","libgphoto2-2_5_10-release","libgphoto2-2_5_9-release","libgphoto2-2_5_8-release","libgphoto2-2_5_7-release","libgphoto2-2_5_6-release","libgphoto2-2_5_5_1-release","libgphoto2-2_5_5-release","libgphoto2-2_5_4-release","libgphoto2-2_5_3_1-release","libgphoto2-2_5_3-release","libgphoto2-2_5_2-release","libgphoto2-2_5_1_1-release","libgphoto2-2_5_1-release","libgphoto2-2_5_0-release"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40334.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L"}]}