CVE-2026-116727
gbsplay through 0.0.103 Heap Out-of-Bounds Read via vgm_open in gbs.c
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| gbsplay mmitch mmitch/gbsplay
github |
≥ 0; ≤ 0.0.103 (affected, custom)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 4.8 medium |
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 | CNA: VulnCheck |
| 3.1 / 3.3 low |
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L | CNA: VulnCheck |
| 4.0 / 4.8 medium |
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 | NVD: [email protected] |
| 3.1 / 3.3 low |
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L | NVD: [email protected] |
Exploit evidence
- https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read
exploit · ADP: CISA-ADP
References
- https://github.com/mmitch/gbsplay/issues/201CNA: VulnCheck · issue-tracking
- https://github.com/mmitch/gbsplayCNA: VulnCheck · product
- https://github.com/mmitch/gbsplay/commit/91b1f6df0abd3914f91caa528ec3213d731999e8CNA: VulnCheck · patch
- https://github.com/mmitch/gbsplay/blob/0.0.103/gbs.c#L996-L1010CNA: VulnCheck · technical-description
- https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-readCNA: VulnCheck · third-party-advisory
- https://www.vulncheck.com/advisories/gbsplay-through-0.0.103-heap-out-of-bounds-read-via-vgm-open-in-gbs-cCNA: VulnCheck · third-party-advisory
- https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-readADP: CISA-ADP · exploit
- https://github.com/mmitch/gbsplay[email protected]
- https://github.com/mmitch/gbsplay/blob/0.0.103/gbs.c#L996-L1010[email protected]
- https://github.com/mmitch/gbsplay/commit/91b1f6df0abd3914f91caa528ec3213d731999e8[email protected]
- https://github.com/mmitch/gbsplay/issues/201[email protected]
- https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read[email protected]
- https://www.vulncheck.com/advisories/gbsplay-through-0.0.103-heap-out-of-bounds-read-via-vgm-open-in-gbs-c[email protected]
- https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read134c704f-9b21-4f2e-91b3-4a467353bcc0
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