{"id":"CVE-2026-124307","published":"2026-11-07T15:17:14.280","lastModified":"2026-11-09T23:17:19.117","description":"Fraunhofer HHI VVdeC before 3.2.1 contains a heap use-after-free vulnerability that allows attackers to corrupt memory by redefining an ALF adaptation parameter set id still referenced by slices. Attackers can supply a crafted VVC bitstream that, with multithreaded decoding, makes worker threads dereference freed APS objects in CABACReader::readAlf() and AdaptiveLoopFilter::reconstructCoeff(), causing crashes or heap corruption.","cvssScore":5.8,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H","cwes":["CWE-416"],"vendors":[],"products":[],"references":[{"url":"https://github.com/fraunhoferhhi/vvdec","tags":[]},{"url":"https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/ParameterSetManager.h#L97","tags":[]},{"url":"https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/Slice.h#L2570","tags":[]},{"url":"https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/DecoderLib/CABACReader.cpp#L428-L429","tags":[]},{"url":"https://github.com/fraunhoferhhi/vvdec/commit/1eddb30c4b8e02f3d13ba24aa7e52f1aa7b08c01","tags":[]},{"url":"https://github.com/fraunhoferhhi/vvdec/issues/390","tags":[]},{"url":"https://github.com/fraunhoferhhi/vvdec/issues/391","tags":[]},{"url":"https://www.vulncheck.com/advisories/fraunhofer-hhi-vvdec-before-3.2.1-heap-use-after-free-via-alf-aps-redefinition","tags":[]},{"url":"http://www.openwall.com/lists/oss-security/2026/11/09/21","tags":[]}],"exploitRefs":[{"url":"https://github.com/fraunhoferhhi/vvdec","tags":[]},{"url":"https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/ParameterSetManager.h#L97","tags":[]},{"url":"https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/CommonLib/Slice.h#L2570","tags":[]},{"url":"https://github.com/fraunhoferhhi/vvdec/blob/v3.2.0/source/Lib/DecoderLib/CABACReader.cpp#L428-L429","tags":[]},{"url":"https://github.com/fraunhoferhhi/vvdec/commit/1eddb30c4b8e02f3d13ba24aa7e52f1aa7b08c01","tags":[]},{"url":"https://github.com/fraunhoferhhi/vvdec/issues/390","tags":[]},{"url":"https://github.com/fraunhoferhhi/vvdec/issues/391","tags":[]}],"hasPoc":true,"ai":null}