UnratedFix available
ncurses: Fix of 2 CVEs
Type: advisorySources: OSV
- CVE-2021-39537: fix heap buffer overflow in _nc_captoinfo() with a crafted termcap entry - CVE-2023-29491: ignore terminfo/termcap environment variables in setuid/setgid programs (--disable-root-environ)
- Products
- ncurses, ncurses-base, ncurses-devel, ncurses-libs, ncurses-static, ncurses-term
- Affected versions
- Not specified
- Fixed versions
- 5.7-4.20090207.el6.tuxcare.els1
- CVEs
- CVE-2021-39537, CVE-2023-29491
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:28 UTC · Revision 1
Source evidence
- CVE-2021-39537: fix heap buffer overflow in _nc_captoinfo() with a crafted termcap entry - CVE-2023-29491: ignore terminfo/termcap environment variables in setuid/setgid programs (--disable-root-environ)
osv:CLSA-2026-1792806631
ncurses
Fixed versions: 5.7-4.20090207.el6.tuxcare.els1
ncurses-base
Fixed versions: 5.7-4.20090207.el6.tuxcare.els1
ncurses-devel
Fixed versions: 5.7-4.20090207.el6.tuxcare.els1
ncurses-libs
Fixed versions: 5.7-4.20090207.el6.tuxcare.els1
ncurses-static
Fixed versions: 5.7-4.20090207.el6.tuxcare.els1
ncurses-term
Fixed versions: 5.7-4.20090207.el6.tuxcare.els1
Complete source record
{
"id": "5fb90f4d675ffe67170570cafc1ac0c62d85afbab9370a4b791e42d974a62532",
"url": "https://osv.dev/vulnerability/CLSA-2026-1792806631",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ncurses: Fix of 2 CVEs",
"summary": "- CVE-2021-39537: fix heap buffer overflow in _nc_captoinfo() with a crafted termcap entry - CVE-2023-29491: ignore terminfo/termcap environment variables in setuid/setgid programs (--disable-root-environ)",
"evidence": "osv:CLSA-2026-1792806631",
"products": [
{
"name": {
"value": "ncurses",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.7-4.20090207.el6.tuxcare.els1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "ncurses-base",
"evidence": "/affected/1/package/name"
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"evidence": "/affected/1/ranges"
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{
"name": {
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{
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{
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"evidence": "/affected/4/ranges"
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"affected_versions": []
},
{
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"evidence": "/affected/5/package/name"
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"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1792806631",
"aliases": [
"CLSA-2026-1792806631"
],
"affected": [
{
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{
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],
"package": {
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"package": {
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"ecosystem": "TuxCare:OracleLinux:6"
},
"database_specific": {
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{
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],
"package": {
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"purl": "pkg:rpm/tuxcare/ncurses-devel?distro=oraclelinux-6",
"ecosystem": "TuxCare:OracleLinux:6"
},
"database_specific": {
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"package": {
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{
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"package": {
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"purl": "pkg:rpm/tuxcare/ncurses-static?distro=oraclelinux-6",
"ecosystem": "TuxCare:OracleLinux:6"
},
"database_specific": {
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}
},
{
"ranges": [
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],
"package": {
"name": "ncurses-term",
"purl": "pkg:rpm/tuxcare/ncurses-term?distro=oraclelinux-6",
"ecosystem": "TuxCare:OracleLinux:6"
},
"database_specific": {
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}
}
],
"modified": "2026-10-26T09:31:55.310919711Z",
"provider": "osv",
"upstream": [
"CVE-2021-39537",
"CVE-2023-29491"
],
"references": [
"https://errata.tuxcare.com/els_os/oraclelinux6els/CLSA-2026-1792806631.html",
"https://nvd.nist.gov/vuln/detail/CVE-2021-39537",
"https://nvd.nist.gov/vuln/detail/CVE-2023-29491"
]
},
"related_cves": [
{
"value": "CVE-2021-39537",
"evidence": "/upstream"
},
{
"value": "CVE-2023-29491",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 448966,
"published_at": "2026-10-24T01:50:43+00:00"
}