UnratedFix available
Fix CVE(s): CVE-2026-11972, CVE-2026-9669
Type: advisorySources: OSV
* SECURITY UPDATE: quadratic parse time in the tarfile module when a streaming archive declares an offset past the end of the stream - debian/patches/CVE-2026-11972.patch: stop the forward-seek loop in _Stream.seek() as soon as read() returns no data, in Lib/tarfile.py, so a crafted mode="r|" archive can no longer keep the parser reading an exhausted stream. - CVE-2026-11972 * SECURITY UPDATE: out-of-bounds write when a bz2 decompressor is reused after a decompression error - debian/patches/CVE-2026-9669.patch: record the libbzip2 error in the BZ2Decompressor object and refuse any further decompress() call with ValueError, in Modules/_bz2module.c, so retrying with the same object can no longer re-enter BZ2_bzDecompress() on a bz_stream left in an invalid internal state. - CVE-2026-9669
- Products
- idle-python3.5, libpython3.5, libpython3.5-dev, libpython3.5-minimal, libpython3.5-stdlib, libpython3.5-testsuite, python3.5, python3.5-dev, python3.5-doc, python3.5-examples, python3.5-minimal, python3.5-venv
- Affected versions
- Not specified
- Fixed versions
- 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
- CVEs
- CVE-2026-11972, CVE-2026-9669
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:40 UTC · Revision 1
Source evidence
Fix CVE(s): CVE-2026-11972, CVE-2026-9669
core-osv · Original sourcePublished 17 Sept 2026, 09:11 UTC
* SECURITY UPDATE: quadratic parse time in the tarfile module when a streaming archive declares an offset past the end of the stream - debian/patches/CVE-2026-11972.patch: stop the forward-seek loop in _Stream.seek() as soon as read() returns no data, in Lib/tarfile.py, so a crafted mode="r|" archive can no longer keep the parser reading an exhausted stream. - CVE-2026-11972 * SECURITY UPDATE: out-of-bounds write when a bz2 decompressor is reused after a decompression error - debian/patches/CVE-2026-9669.patch: record the libbzip2 error in the BZ2Decompressor object and refuse any further decompress() call with ValueError, in Modules/_bz2module.c, so retrying with the same object can no longer re-enter BZ2_bzDecompress() on a bz_stream left in an invalid internal state. - CVE-2026-9669
osv:CLSA-2026-1789636275
idle-python3.5
Fixed versions: 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
libpython3.5
Fixed versions: 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
libpython3.5-dev
Fixed versions: 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
libpython3.5-minimal
Fixed versions: 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
libpython3.5-stdlib
Fixed versions: 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
libpython3.5-testsuite
Fixed versions: 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
python3.5
Fixed versions: 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
python3.5-dev
Fixed versions: 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
python3.5-doc
Fixed versions: 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
python3.5-examples
Fixed versions: 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
python3.5-minimal
Fixed versions: 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
python3.5-venv
Fixed versions: 1:3.5.2-2ubuntu0~16.04.13+tuxcare.els30
Complete source record
{
"id": "32dbf480388b8f7118f432d1b1601b18348d5b51f5a5b0d78bed9d0cc03c6567",
"url": "https://osv.dev/vulnerability/CLSA-2026-1789636275",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2026-11972, CVE-2026-9669",
"summary": "* SECURITY UPDATE: quadratic parse time in the tarfile module when a streaming archive declares an offset past the end of the stream - debian/patches/CVE-2026-11972.patch: stop the forward-seek loop in _Stream.seek() as soon as read() returns no data, in Lib/tarfile.py, so a crafted mode=\"r|\" archive can no longer keep the parser reading an exhausted stream. - CVE-2026-11972 * SECURITY UPDATE: out-of-bounds write when a bz2 decompressor is reused after a decompression error - debian/patches/CVE-2026-9669.patch: record the libbzip2 error in the BZ2Decompressor object and refuse any further decompress() call with ValueError, in Modules/_bz2module.c, so retrying with the same object can no longer re-enter BZ2_bzDecompress() on a bz_stream left in an invalid internal state. - CVE-2026-9669",
"evidence": "osv:CLSA-2026-1789636275",
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{
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{
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"evidence": "/affected/9/package/name"
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"evidence": "/affected/9/ranges"
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"affected_versions": []
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{
"name": {
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"evidence": "/affected/10/package/name"
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"severity": "unknown",
"structured": {
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"aliases": [
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"database_specific": {
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"package": {
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"purl": "pkg:deb/tuxcare/libpython3.5-testsuite?distro=ubuntu-16.04",
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"package": {
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],
"package": {
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"ecosystem": "TuxCare:Ubuntu:16.04"
},
"database_specific": {
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],
"modified": "2026-10-26T09:32:02.520634539Z",
"provider": "osv",
"upstream": [
"CVE-2026-11972",
"CVE-2026-9669"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu16.04els/CLSA-2026-1789636275.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-11972",
"https://nvd.nist.gov/vuln/detail/CVE-2026-9669"
]
},
"related_cves": [
{
"value": "CVE-2026-11972",
"evidence": "/upstream"
},
{
"value": "CVE-2026-9669",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449458,
"published_at": "2026-09-17T09:11:26+00:00"
}