{"id":"CVE-2026-40334","state":"PUBLISHED","title":"libgphoto2 missing null termination in ptp_unpack_Canon_FE() filename buffer in ptp-pack.c","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.","publishedAt":"2026-04-17T23:16:38.751Z","updatedAt":"2026-04-20T13:36:05.703Z","severity":{"score":3.5,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["gphoto libgphoto2"],"affected":[{"vendor":"gphoto","product":"libgphoto2","versions":[{"version":"<= 2.5.33","status":"affected"}]}],"references":["https://github.com/gphoto/libgphoto2/security/advisories/GHSA-ph87-cc3j-c6hm","https://github.com/gphoto/libgphoto2/commit/259fc7d3bfe534ce4b114c464f55b448670ab873"],"weaknesses":["CWE-170"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40334.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40334","state":"PUBLISHED","datePublished":"2026-04-17T23:16:38.751Z","dateUpdated":"2026-04-20T13:36:05.703Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-10T22:50:01.357Z"},"containers":{"cna":{"title":"libgphoto2 missing null termination in ptp_unpack_Canon_FE() filename buffer in ptp-pack.c","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"gphoto","product":"libgphoto2","versions":[{"version":"<= 2.5.33","status":"affected"}]}],"references":[{"url":"https://github.com/gphoto/libgphoto2/security/advisories/GHSA-ph87-cc3j-c6hm","name":"https://github.com/gphoto/libgphoto2/security/advisories/GHSA-ph87-cc3j-c6hm","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/gphoto/libgphoto2/commit/259fc7d3bfe534ce4b114c464f55b448670ab873","name":"https://github.com/gphoto/libgphoto2/commit/259fc7d3bfe534ce4b114c464f55b448670ab873","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"PHYSICAL","availabilityImpact":"LOW","baseScore":3.5,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-170","lang":"en","description":"CWE-170: Improper Null Termination","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-17T23:16:38.751Z"},"source":{"advisory":"GHSA-ph87-cc3j-c6hm","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-40334","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-04-20T13:27:56.209528Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-20T13:36:05.703Z"}}]}}}