{"id":"CVE-2026-49337","state":"PUBLISHED","title":"libde265 has an unbounded memory leak via orphaned slice headers in `read_slice_NAL`","description":"libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted sequence of H.265 NAL units causes `decoder_context::read_slice_NAL()` (`libde265/decctx.cc:481`) to attach slice headers to a finished picture object\nthat has no active image unit, resulting in attacker-controlled unbounded heap growth. The retained headers are never freed until the picture is released, which may not happen during continuous streaming. Version 1.0.20 patches the issue.","publishedAt":"2026-06-19T19:53:18.817Z","updatedAt":"2026-06-22T14:00:14.667Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["strukturag libde265"],"affected":[{"vendor":"strukturag","product":"libde265","versions":[{"version":"< 1.0.20","status":"affected"}]}],"references":["https://github.com/strukturag/libde265/security/advisories/GHSA-g5hj-rf9f-7vxm","https://github.com/strukturag/libde265/commit/683cb9fa603e35840642f98765ab95cdb71cadf9"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/49xxx/CVE-2026-49337.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49337","state":"PUBLISHED","datePublished":"2026-06-19T19:53:18.817Z","dateUpdated":"2026-06-22T14:00:14.667Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-29T14:35:45.902Z"},"containers":{"cna":{"title":"libde265 has an unbounded memory leak via orphaned slice headers in `read_slice_NAL`","descriptions":[{"lang":"en","value":"libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted sequence of H.265 NAL units causes `decoder_context::read_slice_NAL()` (`libde265/decctx.cc:481`) to attach slice headers to a finished picture object\nthat has no active image unit, resulting in attacker-controlled unbounded heap growth. The retained headers are never freed until the picture is released, which may not happen during continuous streaming. Version 1.0.20 patches the issue."}],"affected":[{"vendor":"strukturag","product":"libde265","versions":[{"version":"< 1.0.20","status":"affected"}]}],"references":[{"url":"https://github.com/strukturag/libde265/security/advisories/GHSA-g5hj-rf9f-7vxm","name":"https://github.com/strukturag/libde265/security/advisories/GHSA-g5hj-rf9f-7vxm","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/strukturag/libde265/commit/683cb9fa603e35840642f98765ab95cdb71cadf9","name":"https://github.com/strukturag/libde265/commit/683cb9fa603e35840642f98765ab95cdb71cadf9","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-19T20:10:36.194Z"},"source":{"advisory":"GHSA-g5hj-rf9f-7vxm","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/strukturag/libde265/security/advisories/GHSA-g5hj-rf9f-7vxm","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-22T13:59:34.760551Z","id":"CVE-2026-49337","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-22T14:00:14.667Z"}}]}}}