MediumFix available
gdk-pixbuf — security advisory
GNOME gdk-pixbuf (aka GdkPixbuf) before 2.42.2 allows a denial of service (infinite loop) in lzw.c in the function write_indexes. if c->self_code equals 10, self->code_table[10].extends will assign the value 11 to c. The next execution in the loop will assign self->code_table[11].extends to c, which will give the value of 10. This will make the loop run infinitely. This bug can, for example, be triggered by calling this function with a GIF image with LZW compression that is crafted in a special way.
- Products
- gdk-pixbuf
- Affected versions
- Not specified
- Fixed versions
- 2.40.0-r2, 2.40.0-r4, 2.42.2-r0
- CVEs
- CVE-2020-29385
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:09 UTC · Revision 1
Source evidence
GNOME gdk-pixbuf (aka GdkPixbuf) before 2.42.2 allows a denial of service (infinite loop) in lzw.c in the function write_indexes. if c->self_code equals 10, self->code_table[10].extends will assign the value 11 to c. The next execution in the loop will assign self->code_table[11].extends to c, which will give the value of 10. This will make the loop run infinitely. This bug can, for example, be triggered by calling this function with a GIF image with LZW compression that is crafted in a special way.
osv:ALPINE-CVE-2020-29385
gdk-pixbuf
Fixed versions: 2.40.0-r2
gdk-pixbuf
Fixed versions: 2.40.0-r4
gdk-pixbuf
Fixed versions: 2.42.2-r0
gdk-pixbuf
Fixed versions: 2.42.2-r0
gdk-pixbuf
Fixed versions: 2.42.2-r0
gdk-pixbuf
Fixed versions: 2.42.2-r0
gdk-pixbuf
Fixed versions: 2.42.2-r0
gdk-pixbuf
Fixed versions: 2.42.2-r0
gdk-pixbuf
Fixed versions: 2.42.2-r0
gdk-pixbuf
Fixed versions: 2.42.2-r0
gdk-pixbuf
Fixed versions: 2.42.2-r0
gdk-pixbuf
Fixed versions: 2.42.2-r0
gdk-pixbuf
Fixed versions: 2.42.2-r0
Complete source record
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"url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-29385",
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"summary": "GNOME gdk-pixbuf (aka GdkPixbuf) before 2.42.2 allows a denial of service (infinite loop) in lzw.c in the function write_indexes. if c->self_code equals 10, self->code_table[10].extends will assign the value 11 to c. The next execution in the loop will assign self->code_table[11].extends to c, which will give the value of 10. This will make the loop run infinitely. This bug can, for example, be triggered by calling this function with a GIF image with LZW compression that is crafted in a special way.",
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"modified": "2026-10-26T11:17:55.167245269Z",
"provider": "osv",
"upstream": [
"CVE-2020-29385"
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"references": [
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},
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"evidence": "/upstream"
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"security_relevant": true,
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"source_id": "core-osv",
"document_id": 450602,
"published_at": "2020-12-26T02:15:12.807+00:00"
}