Critical
golang-1.20, golang-1.21 and 4 more products — security advisory
Arithmetic over induction variables in loops were not correctly checked for underflow or overflow. As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption.
- Products
- golang-1.20, golang-1.21, golang-1.22, golang-1.23, golang-1.24, golang-1.25
- Affected versions
- 1.20.3-1ubuntu0.1~20.04, 1.20.3-1ubuntu0.1~20.04.1, 1.20.3-1ubuntu0.1~22.04, 1.20.3-1ubuntu0.1~22.04.1, 1.21.1-1, 1.21.1-1~ubuntu20.04.1, 1.21.1-1~ubuntu20.04.2, 1.21.1-1~ubuntu20.04.3, 1.21.1-1~ubuntu22.04.1, 1.21.1-1~ubuntu22.04.2, 1.21.1-1~ubuntu22.04.3, 1.21.1-1~ubuntu22.04.4, 1.21.3-1, 1.21.4-1, 1.21.5-1, 1.21.6-1, 1.21.7-1, 1.21.7-2, 1.21.8-1, 1.21.8-1build1, 1.21.9-1, 1.21.9-1ubuntu0.1, 1.22.0-1, 1.22.0-2, 1.22.1-1, 1.22.1-1build1, 1.22.2-2, 1.22.2-2ubuntu0.1, 1.22.2-2ubuntu0.2, 1.22.2-2ubuntu0.3, 1.22.2-2ubuntu0.4, 1.22.2-2ubuntu0.5, 1.22.2-2~20.04.1, 1.22.2-2~20.04.2, 1.22.2-2~20.04.3, 1.22.2-2~22.04, 1.22.2-2~22.04.1, 1.22.2-2~22.04.2, 1.22.2-2~22.04.3, 1.22.2-2~22.04.4, 1.22~rc1-2, 1.23.1-1~22.04, 1.23.1-1~22.04.2, 1.23.1-1~22.04.3, 1.23.1-1~24.04, 1.23.1-1~24.04.1, 1.23.10-1, 1.23.10-1ubuntu0.2, 1.23.8-1, 1.24.13-2, 1.24.13-2~22.04.1, 1.24.13-2~22.04.2, 1.24.13-2~24.04.1, 1.24.2-1, 1.24.2-2, 1.24.4-1, 1.24.4-1ubuntu1, 1.24.4-1ubuntu1~22.04.1, 1.24.4-1ubuntu1~22.04.2, 1.24.4-1ubuntu1~24.04.1, 1.24.4-1ubuntu1~24.04.2, 1.24.9-1, 1.25.0-0ubuntu1, 1.25.14-1~ubuntu0.22.04.1, 1.25.14-1~ubuntu0.24.04.1, 1.25.14-1~ubuntu0.26.04.1, 1.25.7-2, 1.25.7-2~25.10.1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-27143
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 08:21 UTC · Revision 1
Source evidence
Arithmetic over induction variables in loops were not correctly checked for underflow or overflow. As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption.
osv:UBUNTU-CVE-2026-27143
golang-1.20
Fixed versions: Not specified
golang-1.21
Fixed versions: Not specified
golang-1.22
Fixed versions: Not specified
golang-1.20
Fixed versions: Not specified
golang-1.21
Fixed versions: Not specified
golang-1.22
Fixed versions: Not specified
golang-1.23
Fixed versions: Not specified
golang-1.24
Fixed versions: Not specified
golang-1.25
Fixed versions: Not specified
golang-1.21
Fixed versions: Not specified
golang-1.22
Fixed versions: Not specified
golang-1.23
Fixed versions: Not specified
golang-1.24
Fixed versions: Not specified
golang-1.25
Fixed versions: Not specified
golang-1.23
Fixed versions: Not specified
golang-1.24
Fixed versions: Not specified
golang-1.25
Fixed versions: Not specified
golang-1.23
Fixed versions: Not specified
golang-1.24
Fixed versions: Not specified
golang-1.25
Fixed versions: Not specified
Complete source record
{
"id": "408692921878faad386c21ce4247e5271df0a9b1d0bc86f3a9aee3e67ce2b3c6",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-27143",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-27143",
"summary": "Arithmetic over induction variables in loops were not correctly checked for underflow or overflow. As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption.",
"evidence": "osv:UBUNTU-CVE-2026-27143",
"products": [
{
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{
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{
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"evidence": "/affected/0/versions"
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},
{
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},
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{
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{
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{
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{
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{
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{
"value": "1.22.2-2~20.04.3",
"evidence": "/affected/2/versions"
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{
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{
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{
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{
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"evidence": "/affected/4/versions"
},
{
"value": "1.21.1-1~ubuntu22.04.3",
"evidence": "/affected/4/versions"
},
{
"value": "1.21.1-1~ubuntu22.04.4",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "golang-1.22",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.22.2-2~22.04",
"evidence": "/affected/5/versions"
},
{
"value": "1.22.2-2~22.04.1",
"evidence": "/affected/5/versions"
},
{
"value": "1.22.2-2~22.04.2",
"evidence": "/affected/5/versions"
},
{
"value": "1.22.2-2~22.04.3",
"evidence": "/affected/5/versions"
},
{
"value": "1.22.2-2~22.04.4",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "golang-1.23",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.23.1-1~22.04",
"evidence": "/affected/6/versions"
},
{
"value": "1.23.1-1~22.04.2",
"evidence": "/affected/6/versions"
},
{
"value": "1.23.1-1~22.04.3",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "golang-1.24",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.24.4-1ubuntu1~22.04.1",
"evidence": "/affected/7/versions"
},
{
"value": "1.24.4-1ubuntu1~22.04.2",
"evidence": "/affected/7/versions"
},
{
"value": "1.24.13-2~22.04.1",
"evidence": "/affected/7/versions"
},
{
"value": "1.24.13-2~22.04.2",
"evidence": "/affected/7/versions"
}
]
},
{
"name": {
"value": "golang-1.25",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.25.14-1~ubuntu0.22.04.1",
"evidence": "/affected/8/versions"
}
]
},
{
"name": {
"value": "golang-1.21",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.21.1-1",
"evidence": "/affected/9/versions"
},
{
"value": "1.21.3-1",
"evidence": "/affected/9/versions"
},
{
"value": "1.21.4-1",
"evidence": "/affected/9/versions"
},
{
"value": "1.21.5-1",
"evidence": "/affected/9/versions"
},
{
"value": "1.21.6-1",
"evidence": "/affected/9/versions"
},
{
"value": "1.21.7-1",
"evidence": "/affected/9/versions"
},
{
"value": "1.21.7-2",
"evidence": "/affected/9/versions"
},
{
"value": "1.21.8-1",
"evidence": "/affected/9/versions"
},
{
"value": "1.21.8-1build1",
"evidence": "/affected/9/versions"
},
{
"value": "1.21.9-1",
"evidence": "/affected/9/versions"
},
{
"value": "1.21.9-1ubuntu0.1",
"evidence": "/affected/9/versions"
}
]
},
{
"name": {
"value": "golang-1.22",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.22~rc1-2",
"evidence": "/affected/10/versions"
},
{
"value": "1.22.0-1",
"evidence": "/affected/10/versions"
},
{
"value": "1.22.0-2",
"evidence": "/affected/10/versions"
},
{
"value": "1.22.1-1",
"evidence": "/affected/10/versions"
},
{
"value": "1.22.1-1build1",
"evidence": "/affected/10/versions"
},
{
"value": "1.22.2-2",
"evidence": "/affected/10/versions"
},
{
"value": "1.22.2-2ubuntu0.1",
"evidence": "/affected/10/versions"
},
{
"value": "1.22.2-2ubuntu0.2",
"evidence": "/affected/10/versions"
},
{
"value": "1.22.2-2ubuntu0.3",
"evidence": "/affected/10/versions"
},
{
"value": "1.22.2-2ubuntu0.4",
"evidence": "/affected/10/versions"
},
{
"value": "1.22.2-2ubuntu0.5",
"evidence": "/affected/10/versions"
}
]
},
{
"name": {
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"evidence": "/affected/11/package/name"
},
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{
"value": "1.23.1-1~24.04",
"evidence": "/affected/11/versions"
},
{
"value": "1.23.1-1~24.04.1",
"evidence": "/affected/11/versions"
}
]
},
{
"name": {
"value": "golang-1.24",
"evidence": "/affected/12/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
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"evidence": "/affected/12/versions"
},
{
"value": "1.24.4-1ubuntu1~24.04.2",
"evidence": "/affected/12/versions"
},
{
"value": "1.24.13-2~24.04.1",
"evidence": "/affected/12/versions"
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]
},
{
"name": {
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"evidence": "/affected/13/package/name"
},
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{
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]
},
{
"name": {
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},
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{
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"evidence": "/affected/14/versions"
},
{
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"evidence": "/affected/14/versions"
},
{
"value": "1.23.10-1ubuntu0.2",
"evidence": "/affected/14/versions"
}
]
},
{
"name": {
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"evidence": "/affected/15/package/name"
},
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{
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{
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{
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{
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{
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"name": {
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},
{
"name": {
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},
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{
"value": "1.24.4-1ubuntu1",
"evidence": "/affected/18/versions"
},
{
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"evidence": "/affected/18/versions"
},
{
"value": "1.24.13-2",
"evidence": "/affected/18/versions"
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]
},
{
"name": {
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},
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{
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{
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"evidence": "/affected/19/versions"
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{
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}
]
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],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2026-27143",
"aliases": [
"UBUNTU-CVE-2026-27143"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
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{
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{
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],
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},
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],
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},
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},
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},
{
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},
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],
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},
"ecosystem_specific": {
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{
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"1.21.1-1~ubuntu22.04.2",
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"1.21.1-1~ubuntu22.04.4"
],
"database_specific": {
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},
"ecosystem_specific": {
"binaries": [
{
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},
{
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"binary_version": "1.21.1-1~ubuntu22.04.4"
},
{
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}
},
{
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],
"package": {
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"purl": "pkg:deb/ubuntu/golang-1.22?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
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"1.22.2-2~22.04.1",
"1.22.2-2~22.04.2",
"1.22.2-2~22.04.3",
"1.22.2-2~22.04.4"
],
"database_specific": {
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},
"ecosystem_specific": {
"binaries": [
{
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},
{
"binary_name": "golang-1.22-go",
"binary_version": "1.22.2-2~22.04.4"
},
{
"binary_name": "golang-1.22-src",
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}
]
}
},
{
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],
"modified": "2026-10-19T17:00:21.670578627Z",
"provider": "osv",
"upstream": [
"CVE-2026-27143"
],
"references": [
"https://ubuntu.com/security/CVE-2026-27143",
"https://www.cve.org/CVERecord?id=CVE-2026-27143",
"https://go.dev/cl/763765",
"https://go.dev/issue/78333",
"https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU",
"https://pkg.go.dev/vuln/GO-2026-4868"
]
},
"related_cves": [
{
"value": "CVE-2026-27143",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 375507,
"published_at": "2026-04-08T02:16:00+00:00"
}