linux — security advisory
An out-of-bounds (OOB) memory access flaw was found in x25_bind in net/x25/af_x25.c in the Linux kernel version v5.12-rc5. A bounds check failure allows a local attacker with a user account on the system to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
- Products
- linux
- Affected versions
- Not specified
- Fixed versions
- 5.9.15-1
- CVEs
- CVE-2020-35519
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 13:14 UTC · Revision 1
Source evidence
An out-of-bounds (OOB) memory access flaw was found in x25_bind in net/x25/af_x25.c in the Linux kernel version v5.12-rc5. A bounds check failure allows a local attacker with a user account on the system to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
osv:DEBIAN-CVE-2020-35519
linux
Fixed versions: 5.9.15-1
linux
Fixed versions: 5.9.15-1
linux
Fixed versions: 5.9.15-1
Complete source record
{
"id": "ea3d762e1b122d2de04f0ef2e13ffb8ec4011b98ca8bbffa04c4503edc4bfd37",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-35519",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2020-35519",
"summary": "An out-of-bounds (OOB) memory access flaw was found in x25_bind in net/x25/af_x25.c in the Linux kernel version v5.12-rc5. A bounds check failure allows a local attacker with a user account on the system to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.",
"evidence": "osv:DEBIAN-CVE-2020-35519",
"products": [
{
"name": {
"value": "linux",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.9.15-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
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},
{
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"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2020-35519",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
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{
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],
"package": {
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"purl": "pkg:deb/debian/linux?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-35519.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
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],
"package": {
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"purl": "pkg:deb/debian/linux?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-35519.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
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},
{
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],
"package": {
"name": "linux",
"purl": "pkg:deb/debian/linux?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-35519.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T12:02:00.134747453Z",
"provider": "osv",
"upstream": [
"CVE-2020-35519"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2020-35519"
]
},
"related_cves": [
{
"value": "CVE-2020-35519",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 451954,
"published_at": "2021-05-06T15:15:07.86+00:00"
}