CVE-2026-111150
ValleyBell libvgm through commit a6eed945 Heap Out-of-Bounds Read via DecompressDataBlk
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
ValleyBell libvgm through commit a6eed945 contains a heap out-of-bounds read vulnerability in the PCM data-block decompressor caused by an unbounded compression-table index. Attackers can supply a crafted .vgm file with a small type 0x7F table and wider compressed values, causing DecompressDataBlk to over-read heap memory and crash consumers.
| CWE | CWE-125 |
| Vendor | valleybell |
| Product | libvgm |
| Published | Oct 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
ValleyBell / libvgm
0 ≤ a6eed945ecf4e5a25cf82004779c6f7e4fd5c319
References
hackmd.io: https://hackmd.io/@haind-pwn/libvgm-pcm-compression-table-oob-read github.com: https://github.com/ValleyBell/libvgm/blob/a6eed945ecf4e5a25cf82004779c6f7e4fd5c319/player/dblk_compr.c#L727-L751 github.com: https://github.com/ValleyBell/libvgm/blob/a6eed945ecf4e5a25cf82004779c6f7e4fd5c319/player/dblk_compr.c#L183-L190 github.com: https://github.com/ValleyBell/libvgm vulncheck.com: https://www.vulncheck.com/advisories/valleybell-libvgm-through-commit-a6eed945-heap-out-of-bounds-read-via-decompressdatablk
Credits
HaiND from the Post and Telecommunication Institute of Technology