{"id":"CVE-2026-124311","kind":"vulnerability","aliases":["CVE-2026-124311"],"related":[],"title":"VVdeC: crafted VVC bitstream crashes decoder via reference wrap-around","description":"Fraunhofer HHI VVdeC through 3.2.1 contains a NULL pointer dereference vulnerability in InterPrediction::xPredInterBlk that allows attackers to crash the decoder by switching SPS to enable reference wrap-around. Attackers can supply a crafted VVC bitstream activating a new SPS with sps_ref_wraparound_enabled_flag set, causing reads from missing PIC_RECON_WRAP buffers and denial of service.","summary":"VVdeC, Fraunhofer HHI's VVC video decoder, dereferences a NULL pointer in InterPrediction::xPredInterBlk when a new SPS enables reference wrap-around. An attacker who supplies a crafted VVC bitstream can crash the decoder, causing denial of service.","severity":"medium","cvss":6.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["c++","package","video-decoding","vvc","vvdec"],"not_affected_if":["no-vvc-decoding","trusted-input-only"],"how_to_check":"- Check whether your application links VVdeC or invokes it to decode VVC streams, and at what version (affected through `3.2.1`).\n- Find out whether the decoder processes streams from untrusted sources such as uploads or network feeds.","fix":"- VVdeC: the sources link a patch but do not state the fixed version; affected through `3.2.1`.","status":"open","published_at":"2026-11-07T15:17:14+00:00","first_seen_at":"2026-11-07T15:47:57+00:00","triaged_at":"2026-11-07T15:48:18+00:00","updated_at":"2026-11-07T15:48:18+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-07T15:48:18Z","model":"claude-haiku-5-5","output":{"fix":"- VVdeC: the sources link a patch but do not state the fixed version; affected through `3.2.1`.","reach":"unknown","title":"VVdeC: crafted VVC bitstream crashes decoder via reference wrap-around","impact":"low","summary":"VVdeC, Fraunhofer HHI's VVC video decoder, dereferences a NULL pointer in InterPrediction::xPredInterBlk when a new SPS enables reference wrap-around. An attacker who supplies a crafted VVC bitstream can crash the decoder, causing denial of service.","audience":"developers","category":"package","nicknames":[],"who_cares":["vvdec","video-decoding","vvc","c++"],"confidence":0.6,"fix_status":"available","needs_auth":"no","worst_case":"Attacker crashes the decoder process with a crafted stream","analyst_note":"","how_to_check":"- Check whether your application links VVdeC or invokes it to decode VVC streams, and at what version (affected through `3.2.1`).\n- Find out whether the decoder processes streams from untrusted sources such as uploads or network feeds.","plain_action":"","needs_analyst":false,"not_affected_if":["no-vvc-decoding","trusted-input-only"],"who_is_affected":"Applications that embed VVdeC and decode VVC bitstreams, especially those that accept streams from untrusted sources. Apps that never decode VVC or only decode trusted content can skip it.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.001104,"input_tokens":4323,"output_tokens":1344,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-124311':14A,17A '-2026':13A,16A '3.2.1':68C 'activ':101C 'allow':79C 'around':11A,47B,93C 'attack':49B,80C,94C 'bitstream':4A,55B,100C 'buffer':119C 'c':18B 'caus':60B,112C 'contain':69C 'craft':2A,53B,98C 'crash':5A,57B,82C 'cve':12A,15A 'decod':6A,22B,31B,59B,84C 'denial':61B,121C 'derefer':32B,73C 'enabl':43B,89C,109C 'flag':110C 'fraunhof':26B,64C 'hhi':27B,65C 'interpredict':37B,76C 'miss':115C 'new':41B,103C 'null':34B,71C 'packag':19B 'pic':116C 'pointer':35B,72C 'read':113C 'recon':117C 'ref':107C 'refer':8A,44B,90C 'servic':63B,123C 'set':111C 'sps':42B,87C,104C,106C 'suppli':51B,96C 'switch':86C 'via':7A 'video':21B,30B 'video-decod':20B 'vulner':74C 'vvc':3A,23B,29B,54B,99C 'vvdec':1A,24B,25B,66C 'wrap':10A,46B,92C,118C 'wrap-around':9A,45B,91C 'wraparound':108C 'xpredinterblk':38B,77C","nicknames":[],"mitigations":[],"who_affected":"Applications that embed VVdeC and decode VVC bitstreams, especially those that accept streams from untrusted sources. Apps that never decode VVC or only decode trusted content can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"developers","plain_action":null,"pkeys":[],"ptokens":[],"labels":["c","medium","package","videodecoding","vvc","vvdec"],"campaign_type":null,"search_a":"'-124311':14A,17A '-2026':13A,16A 'around':11A 'bitstream':4A 'craft':2A 'crash':5A 'cve':12A,15A 'decod':6A 'refer':8A 'via':7A 'vvc':3A 'vvdec':1A 'wrap':10A 'wrap-around':9A","search_b":"'around':47B 'attack':49B 'bitstream':55B 'c':18B 'caus':60B 'craft':53B 'crash':57B 'decod':22B,31B,59B 'denial':61B 'derefer':32B 'enabl':43B 'fraunhof':26B 'hhi':27B 'interpredict':37B 'new':41B 'null':34B 'packag':19B 'pointer':35B 'refer':44B 'servic':63B 'sps':42B 'suppli':51B 'video':21B,30B 'video-decod':20B 'vvc':23B,29B,54B 'vvdec':24B,25B 'wrap':46B 'wrap-around':45B 'xpredinterblk':38B","search_c":"'3.2.1':68C 'activ':101C 'allow':79C 'around':93C 'attack':80C,94C 'bitstream':100C 'buffer':119C 'caus':112C 'contain':69C 'craft':98C 'crash':82C 'decod':84C 'denial':121C 'derefer':73C 'enabl':89C,109C 'flag':110C 'fraunhof':64C 'hhi':65C 'interpredict':76C 'miss':115C 'new':103C 'null':71C 'pic':116C 'pointer':72C 'read':113C 'recon':117C 'ref':107C 'refer':90C 'servic':123C 'set':111C 'sps':87C,104C,106C 'suppli':96C 'switch':86C 'vulner':74C 'vvc':99C 'vvdec':66C 'wrap':92C,118C 'wrap-around':91C 'wraparound':108C 'xpredinterblk':77C","first_public_at":"2026-11-07T15:17:14+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-124311","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124311","severity":null,"published_at":"2026-11-07T15:17:14+00:00","modified_at":"2026-11-07T15:17:14+00:00","first_seen_at":"2026-11-07T15:47:57+00:00","fetched_at":"2026-11-07T15:47:57+00:00","note":null}],"documents":[{"id":96364,"url":"https://github.com/fraunhoferhhi/vvdec/commit/fb73aca37b48f89814f57edbc8072a37d47bbe06","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":96365,"url":"https://www.vulncheck.com/advisories/fraunhofer-hhi-vvdec-through-3.2.1-null-pointer-dereference-via-interprediction-xpredinterblk","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}