{"id":"CVE-2026-116727","kind":"vulnerability","aliases":["CVE-2026-116727"],"related":[],"title":"gbsplay: crafted VGM file reads past heap buffer and crashes player","description":"gbsplay through 0.0.103 contains a heap out-of-bounds read vulnerability in vgm_open() in gbs.c that walks the VGM command stream without bounds checks. Attackers can supply a crafted VGM file with wait opcodes and no 0x66 terminator to read past the heap buffer and crash the player.","summary":"gbsplay, a Game Boy sound player, has a heap out-of-bounds read in vgm_open() in gbs.c because it walks the VGM command stream without bounds checks. A crafted VGM file with wait opcodes and no 0x66 terminator makes the player read past its heap buffer and crash.","severity":"medium","cvss":4.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["audio-tools","gbsplay","linux","package"],"not_affected_if":["gbsplay-not-installed","no-vgm-input"],"how_to_check":"- Run `gbsplay --version` and compare against the fixed release; the sources say the flaw affects versions through `0.0.103`\n- unknown for whether any distribution package has shipped a patch","fix":"- Upgrade gbsplay past `0.0.103` once a fixed release is available; unknown for the exact fixed version\n- Until then, only open VGM files from trusted sources","status":"open","published_at":"2026-10-26T22:16:56+00:00","first_seen_at":"2026-10-26T22:25:33+00:00","triaged_at":"2026-10-26T22:28:08+00:00","updated_at":"2026-10-26T22:28:08+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-26T22:28:08Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade gbsplay past `0.0.103` once a fixed release is available; unknown for the exact fixed version\n- Until then, only open VGM files from trusted sources","reach":"local","title":"gbsplay: crafted VGM file reads past heap buffer and crashes player","impact":"low","summary":"gbsplay, a Game Boy sound player, has a heap out-of-bounds read in vgm_open() in gbs.c because it walks the VGM command stream without bounds checks. A crafted VGM file with wait opcodes and no 0x66 terminator makes the player read past its heap buffer and crash.","category":"package","nicknames":[],"who_cares":["gbsplay","linux","audio-tools"],"confidence":0.6,"needs_auth":"no","worst_case":"Player crashes on a crafted VGM file; code execution not stated","analyst_note":"","how_to_check":"- Run `gbsplay --version` and compare against the fixed release; the sources say the flaw affects versions through `0.0.103`\n- unknown for whether any distribution package has shipped a patch","needs_analyst":false,"not_affected_if":["no-vgm-input","gbsplay-not-installed"],"who_is_affected":"Only installations of gbsplay through `0.0.103` that open VGM files are affected, and the reported impact is a crash of the player. Systems that do not run gbsplay or never process untrusted VGM files can skip it.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000599,"input_tokens":3340,"output_tokens":530,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-116727':14A,17A '-2026':13A,16A '0.0.103':76C '0x66':62B,112C 'attack':100C 'audio':19B 'audio-tool':18B 'bound':36B,51B,83C,98C 'boy':27B 'buffer':8A,71B,119C 'check':52B,99C 'command':48B,95C 'contain':77C 'craft':2A,54B,104C 'crash':10A,73B,121C 'cve':12A,15A 'file':4A,56B,106C 'game':26B 'gbs.c':42B,90C 'gbsplay':1A,21B,24B,74C 'heap':7A,32B,70B,79C,118C 'linux':22B 'make':64B 'opcod':59B,109C 'open':40B,88C 'out-of-bound':33B,80C 'packag':23B 'past':6A,68B,116C 'player':11A,29B,66B,123C 'read':5A,37B,67B,84C,115C 'sound':28B 'stream':49B,96C 'suppli':102C 'termin':63B,113C 'tool':20B 'vgm':3A,39B,47B,55B,87C,94C,105C 'vulner':85C 'wait':58B,108C 'walk':45B,92C 'without':50B,97C","nicknames":[],"mitigations":[],"who_affected":"Only installations of gbsplay through `0.0.103` that open VGM files are affected, and the reported impact is a crash of the player. Systems that do not run gbsplay or never process untrusted VGM files can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-26T22:16:56+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/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-2026-116727","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116727","severity":null,"published_at":"2026-10-26T22:16:56+00:00","modified_at":"2026-10-26T22:16:56+00:00","first_seen_at":"2026-10-26T22:25:33+00:00","fetched_at":"2026-10-26T22:25:33+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}