High
mupdf — security advisory
MuPDF versions 1.23.0 through 1.27.0 contain a double-free vulnerability in fz_fill_pixmap_from_display_list() when an exception occurs during display list rendering. The function accepts a caller-owned fz_pixmap pointer but incorrectly drops the pixmap in its error handling path before rethrowing the exception. Callers (including the barcode decoding path in fz_decode_barcode_from_display_list) also drop the same pixmap in cleanup, resulting in a double-free that can corrupt the heap and crash the process. This issue affects applications that enable and use MuPDF barcode decoding and can be triggered by processing crafted input that causes a rendering-time error while decoding barcodes.
- Products
- mupdf
- Affected versions
- 1.11+ds1-1.1, 1.11+ds1-2, 1.12.0+ds1-1, 1.12.0+ds1-1ubuntu0.1~esm1, 1.12.0+ds1-1ubuntu0.1~esm2, 1.15.0+ds1-1, 1.16.1+ds1-1ubuntu1, 1.16.1+ds1-1ubuntu1+esm1, 1.16.1+ds1-1ubuntu1+esm2, 1.17.0+ds1-2, 1.19.0+ds1-1, 1.19.0+ds1-1build1, 1.19.0+ds1-2, 1.19.0+ds1-2ubuntu0.1~esm1, 1.22.2+ds1-2, 1.22.2+ds1-2build1, 1.23.10+ds1-1, 1.23.10+ds1-1build1, 1.23.10+ds1-1build2, 1.23.10+ds1-1build3, 1.23.10+ds1-1ubuntu0.1~esm1, 1.23.6+ds1-1, 1.23.7+ds1-1, 1.25.1+ds1-5build2, 1.25.1+ds1-6, 1.25.1+ds1-7, 1.25.1+ds1-7build1, 1.25.1+ds1-7build2, 1.27.0+ds1-2ubuntu1, 1.27.0+ds1-3ubuntu1, 1.27.0+ds1-3ubuntu2, 1.27.0+ds1-3ubuntu3, 1.7-1, 1.7a-1, 1.7a-1ubuntu0.1~esm1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-25556
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:06 UTC · Revision 1
Source evidence
MuPDF versions 1.23.0 through 1.27.0 contain a double-free vulnerability in fz_fill_pixmap_from_display_list() when an exception occurs during display list rendering. The function accepts a caller-owned fz_pixmap pointer but incorrectly drops the pixmap in its error handling path before rethrowing the exception. Callers (including the barcode decoding path in fz_decode_barcode_from_display_list) also drop the same pixmap in cleanup, resulting in a double-free that can corrupt the heap and crash the process. This issue affects applications that enable and use MuPDF barcode decoding and can be triggered by processing crafted input that causes a rendering-time error while decoding barcodes.
osv:UBUNTU-CVE-2026-25556
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
mupdf
Fixed versions: Not specified
Complete source record
{
"id": "00d105188c9de9c907623a286ed0be495fc7f9332daa31d115b2eeb82a4d7ae6",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-25556",
"method": "structured",
"payload": {
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"title": "UBUNTU-CVE-2026-25556",
"summary": "MuPDF versions 1.23.0 through 1.27.0 contain a double-free vulnerability in fz_fill_pixmap_from_display_list() when an exception occurs during display list rendering. The function accepts a caller-owned fz_pixmap pointer but incorrectly drops the pixmap in its error handling path before rethrowing the exception. Callers (including the barcode decoding path in fz_decode_barcode_from_display_list) also drop the same pixmap in cleanup, resulting in a double-free that can corrupt the heap and crash the process. This issue affects applications that enable and use MuPDF barcode decoding and can be triggered by processing crafted input that causes a rendering-time error while decoding barcodes.",
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"modified": "2026-10-17T12:58:07.379168904Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2026-25556",
"https://www.cve.org/CVERecord?id=CVE-2026-25556",
"https://bugs.ghostscript.com/show_bug.cgi?id=709029",
"https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=d4743b6092d513321c23c6f7fe5cff87cde043c1",
"https://mupdf.com/",
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"value": "CVE-2026-25556",
"evidence": "/upstream"
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"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 358155,
"published_at": "2026-02-06T17:16:00+00:00"
}