NetSurf libnsbmp through 0.1.7 Out-of-Bounds Read via bmp_decode_mask
NetSurf libnsbmp through 0.1.7 contains an out-of-bounds read vulnerability in bmp_decode_mask() that allows attackers to read one byte past the image buffer by supplying crafted ICO files. Attackers can provide an ICO whose inner bitmap width is not a multiple of 8, causing a heap over-read that can crash applications calling bmp_decode().
CVE-2026-111139
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-111139
libnsbmp
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/netsurf-browser/libnsbmp",
"vendor": "NetSurf",
"product": "libnsbmp",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "custom",
"lessThanOrEqual": "0.1.7"
}
],
"packageURL": "pkg:github/netsurf-browser/libnsbmp",
"collectionURL": "https://github.com/netsurf-browser/libnsbmp",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-111139
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #30071 · Revision 1
- Added to Heist Feed
- Publisher date