{"id":"CVE-2018-6548","aliases":["EUVD-2018-18300","GHSA-wfwr-mmpm-892c","UBUNTU-CVE-2018-6548"],"status":"published","title":"A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was...","description":"A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before, its property frame_ would not be changed because of code in vp9parser::Vp9HeaderParser::SetFrame. Its frame_ could be freed while the corresponding pointer would not be updated, leading to a dangling pointer. This is related to the function OutputCluster in webm_info.cc.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01387,"percentile":0.72435,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2018-02-02T09:00:00Z","modified":"2026-10-24T10:30:25Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"oxide-qt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.5-0ubuntu1","1.10.3-0ubuntu0.15.10.1","1.10.3-0ubuntu0.15.10.2","1.11.3-0ubuntu3","1.11.4-0ubuntu1","1.11.5-0ubuntu1","1.12.5-0ubuntu1","1.12.6-0ubuntu1","1.12.7-0ubuntu1","1.13.6-0ubuntu1","1.14.7-0ubuntu1","1.14.9-0ubuntu0.16.04.1","1.15.7-0ubuntu0.16.04.1","1.15.8-0ubuntu0.16.04.1","1.16.5-0ubuntu0.16.04.1","1.17.7-0ubuntu0.16.04.1","1.17.9-0ubuntu0.16.04.1","1.18.3-0ubuntu0.16.04.1","1.18.5-0ubuntu0.16.04.1","1.19.4-0ubuntu0.16.04.1","1.20.4-0ubuntu0.16.04.1","1.21.5-0ubuntu0.16.04.1"]}],"products":[{"vendor":"webmproject","product":"libwebm"}],"references":[{"url":"https://github.com/dwfault/PoCs/blob/master/libwebm%20Vp9HeaderParser%20UAF%20by%20PrintVP9Info/libwebm%20Vp9HeaderParser%20UAF%20by%20PrintVP9Info.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://bugs.chromium.org/p/webm/issues/detail?id=1493","tags":["x_refsource_MISC","x_transferred","Permissions Required","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-6548"},{"url":"https://github.com/advisories/GHSA-wfwr-mmpm-892c"},{"url":"https://ubuntu.com/security/CVE-2018-6548","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-6548","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-6548","description":"A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before, its property frame_ would not be changed because of code in vp9parser::Vp9HeaderParser::SetFrame. Its frame_ could be freed while the corresponding pointer would not be updated, leading to a dangling pointer. This is related to the function OutputCluster in webm_info.cc.","status":"published","published":"2018-02-02T09:00:00Z","modified":"2024-08-05T06:10:10.324Z","updated_at":"2026-11-02T14:35:05.619113Z"}],"euvd":[{"id":"EUVD-2018-18300","description":"A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before, its property frame_ would not be changed because of code in vp9parser::Vp9HeaderParser::SetFrame. Its frame_ could be freed while the corresponding pointer would not be updated, leading to a dangling pointer. This is related to the function OutputCluster in webm_info.cc.","status":"published","published":"2018-02-02T09:00:00Z","modified":"2024-08-05T06:10:10Z","updated_at":"2026-11-03T02:40:07.640255Z"}],"ghsa":[{"id":"GHSA-wfwr-mmpm-892c","title":"A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was...","description":"A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before, its property frame_ would not be changed because of code in vp9parser::Vp9HeaderParser::SetFrame. Its frame_ could be freed while the corresponding pointer would not be updated, leading to a dangling pointer. This is related to the function OutputCluster in webm_info.cc.","status":"published","published":"2022-05-14T03:44:10Z","modified":"2023-02-02T05:08:26Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:52:44.806949Z"}],"nvd":[{"id":"CVE-2018-6548","description":"A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before, its property frame_ would not be changed because of code in vp9parser::Vp9HeaderParser::SetFrame. Its frame_ could be freed while the corresponding pointer would not be updated, leading to a dangling pointer. This is related to the function OutputCluster in webm_info.cc.","status":"published","published":"2018-02-02T09:29:00.85Z","modified":"2026-06-17T02:02:00.347Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:04:22.897995Z"}],"osv":[{"id":"CVE-2018-6548","description":"A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before, its property frame_ would not be changed because of code in vp9parser::Vp9HeaderParser::SetFrame. Its frame_ could be freed while the corresponding pointer would not be updated, leading to a dangling pointer. This is related to the function OutputCluster in webm_info.cc.","status":"published","published":"2018-02-02T09:29:00.85Z","modified":"2026-10-24T10:30:25.283884384Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:09.74357Z"},{"id":"UBUNTU-CVE-2018-6548","description":"A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before, its property frame_ would not be changed because of code in vp9parser::Vp9HeaderParser::SetFrame. Its frame_ could be freed while the corresponding pointer would not be updated, leading to a dangling pointer. This is related to the function OutputCluster in webm_info.cc.","status":"published","published":"2018-02-02T09:29:00Z","modified":"2026-04-22T12:02:23.503322Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:18.772093Z"}]}}