UnratedFix available
python3.11: Fix of CVE-2026-12345
Type: advisorySources: OSV
- CVE-2026-12345: fix symlink race in tempfile.TemporaryDirectory cleanup that could delete or chmod files outside the temporary directory - Backport upstream 3.11 hardening the fix builds on: handle os.close() errors in shutil.rmtree() (bpo-35332), don't mask PermissionError during cleanup (bpo-43153), fix cleanup recursion error (gh-79325)
- Products
- python3.11, python3.11-debug, python3.11-devel, python3.11-idle, python3.11-libs, python3.11-test, python3.11-tkinter
- Affected versions
- Not specified
- Fixed versions
- 3.11.2-2.el9_2.2.tuxcare.els36
- CVEs
- CVE-2026-12345
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 10:46 UTC · Revision 1
Source evidence
- CVE-2026-12345: fix symlink race in tempfile.TemporaryDirectory cleanup that could delete or chmod files outside the temporary directory - Backport upstream 3.11 hardening the fix builds on: handle os.close() errors in shutil.rmtree() (bpo-35332), don't mask PermissionError during cleanup (bpo-43153), fix cleanup recursion error (gh-79325)
osv:CLSA-2026-1791359868
python3.11
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els36
python3.11-debug
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els36
python3.11-devel
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els36
python3.11-idle
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els36
python3.11-libs
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els36
python3.11-test
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els36
python3.11-tkinter
Fixed versions: 3.11.2-2.el9_2.2.tuxcare.els36
Complete source record
{
"id": "82579f5003214af75d79ccdad79b45b2e65434c7c39fc532198835e9b2f983bd",
"url": "https://osv.dev/vulnerability/CLSA-2026-1791359868",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "python3.11: Fix of CVE-2026-12345",
"summary": "- CVE-2026-12345: fix symlink race in tempfile.TemporaryDirectory cleanup that could delete or chmod files outside the temporary directory - Backport upstream 3.11 hardening the fix builds on: handle os.close() errors in shutil.rmtree() (bpo-35332), don't mask PermissionError during cleanup (bpo-43153), fix cleanup recursion error (gh-79325)",
"evidence": "osv:CLSA-2026-1791359868",
"products": [
{
"name": {
"value": "python3.11",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
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"evidence": "/affected/0/ranges"
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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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],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
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"aliases": [
"CLSA-2026-1791359868"
],
"affected": [
{
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],
"package": {
"name": "python3.11",
"purl": "pkg:rpm/tuxcare/python3.11?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1791359868.json"
}
},
{
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"package": {
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"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
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},
"database_specific": {
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{
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"package": {
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},
"database_specific": {
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{
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"package": {
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"purl": "pkg:rpm/tuxcare/python3.11-libs?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
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},
{
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],
"package": {
"name": "python3.11-test",
"purl": "pkg:rpm/tuxcare/python3.11-test?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
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},
{
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],
"package": {
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"purl": "pkg:rpm/tuxcare/python3.11-tkinter?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
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}
}
],
"modified": "2026-10-26T09:30:52.960929177Z",
"provider": "osv",
"upstream": [
"CVE-2026-12345"
],
"references": [
"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1791359868.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-12345"
]
},
"related_cves": [
{
"value": "CVE-2026-12345",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 447306,
"published_at": "2026-10-07T07:57:58+00:00"
}