UnratedFix available
Fix CVE(s): CVE-2020-35492
Type: advisorySources: OSV
* SECURITY UPDATE: stack-based buffer overflow in the image compositor - debian/patches/CVE-2020-35492.patch: in _inplace_src_spans() in src/cairo-image-compositor.c, take the mask write pointer from pixman_image_get_data(r->mask) instead of the r->_buf tail of the stack-allocated span renderer, so a row wider than SZ_BUF (whose mask pixman already backs with a heap allocation) can no longer be written past the end of the stack buffer. - CVE-2020-35492
- Products
- cairo-perf-utils, libcairo-gobject2, libcairo-script-interpreter2, libcairo2, libcairo2-dev, libcairo2-doc
- Affected versions
- Not specified
- Fixed versions
- 1.15.10-2ubuntu0.1+tuxcare.els1
- CVEs
- CVE-2020-35492
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 10:54 UTC · Revision 1
Source evidence
* SECURITY UPDATE: stack-based buffer overflow in the image compositor - debian/patches/CVE-2020-35492.patch: in _inplace_src_spans() in src/cairo-image-compositor.c, take the mask write pointer from pixman_image_get_data(r->mask) instead of the r->_buf tail of the stack-allocated span renderer, so a row wider than SZ_BUF (whose mask pixman already backs with a heap allocation) can no longer be written past the end of the stack buffer. - CVE-2020-35492
osv:CLSA-2026-1787645764
cairo-perf-utils
Fixed versions: 1.15.10-2ubuntu0.1+tuxcare.els1
libcairo-gobject2
Fixed versions: 1.15.10-2ubuntu0.1+tuxcare.els1
libcairo-script-interpreter2
Fixed versions: 1.15.10-2ubuntu0.1+tuxcare.els1
libcairo2
Fixed versions: 1.15.10-2ubuntu0.1+tuxcare.els1
libcairo2-dev
Fixed versions: 1.15.10-2ubuntu0.1+tuxcare.els1
libcairo2-doc
Fixed versions: 1.15.10-2ubuntu0.1+tuxcare.els1
Complete source record
{
"id": "e35133c5d5f14eae2df14495997482b0a116be6a0df38e5cc4851f275b604e7b",
"url": "https://osv.dev/vulnerability/CLSA-2026-1787645764",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2020-35492",
"summary": "* SECURITY UPDATE: stack-based buffer overflow in the image compositor - debian/patches/CVE-2020-35492.patch: in _inplace_src_spans() in src/cairo-image-compositor.c, take the mask write pointer from pixman_image_get_data(r->mask) instead of the r->_buf tail of the stack-allocated span renderer, so a row wider than SZ_BUF (whose mask pixman already backs with a heap allocation) can no longer be written past the end of the stack buffer. - CVE-2020-35492",
"evidence": "osv:CLSA-2026-1787645764",
"products": [
{
"name": {
"value": "cairo-perf-utils",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.15.10-2ubuntu0.1+tuxcare.els1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libcairo-gobject2",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libcairo-script-interpreter2",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.15.10-2ubuntu0.1+tuxcare.els1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libcairo2",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.15.10-2ubuntu0.1+tuxcare.els1",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libcairo2-dev",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.15.10-2ubuntu0.1+tuxcare.els1",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libcairo2-doc",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.15.10-2ubuntu0.1+tuxcare.els1",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1787645764",
"aliases": [
"CLSA-2026-1787645764"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.15.10-2ubuntu0.1+tuxcare.els1"
}
]
}
],
"package": {
"name": "cairo-perf-utils",
"purl": "pkg:deb/tuxcare/cairo-perf-utils?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787645764.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
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}
]
}
],
"package": {
"name": "libcairo-gobject2",
"purl": "pkg:deb/tuxcare/libcairo-gobject2?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787645764.json"
}
},
{
"ranges": [
{
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"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "libcairo-script-interpreter2",
"purl": "pkg:deb/tuxcare/libcairo-script-interpreter2?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787645764.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.15.10-2ubuntu0.1+tuxcare.els1"
}
]
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],
"package": {
"name": "libcairo2",
"purl": "pkg:deb/tuxcare/libcairo2?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787645764.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.15.10-2ubuntu0.1+tuxcare.els1"
}
]
}
],
"package": {
"name": "libcairo2-dev",
"purl": "pkg:deb/tuxcare/libcairo2-dev?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787645764.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.15.10-2ubuntu0.1+tuxcare.els1"
}
]
}
],
"package": {
"name": "libcairo2-doc",
"purl": "pkg:deb/tuxcare/libcairo2-doc?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787645764.json"
}
}
],
"modified": "2026-10-26T09:31:34.051413653Z",
"provider": "osv",
"upstream": [
"CVE-2020-35492"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1787645764.html",
"https://nvd.nist.gov/vuln/detail/CVE-2020-35492"
]
},
"related_cves": [
{
"value": "CVE-2020-35492",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 447753,
"published_at": "2026-08-25T08:16:15+00:00"
}