UnratedFix available
Fix CVE(s): CVE-2021-4048
Type: advisorySources: OSV
* SECURITY UPDATE: Out-of-bounds read in the MRRR eigenvector routines - debian/patches/CVE-2021-4048.patch: return early from clarrv, dlarrv, slarrv and zlarrv when M is zero, so the routines no longer read out-of-bounds entries of IBLOCK and the work array - CVE-2021-4048
- Products
- libblas-dev, libblas-test, libblas3, liblapack-dev, liblapack-doc, liblapack-doc-man, liblapack-pic, liblapack-test, liblapack3, liblapacke, liblapacke-dev, libtmglib-dev, libtmglib3
- Affected versions
- Not specified
- Fixed versions
- 3.7.1-4ubuntu1+tuxcare.els1
- CVEs
- CVE-2021-4048
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:42 UTC · Revision 1
Source evidence
* SECURITY UPDATE: Out-of-bounds read in the MRRR eigenvector routines - debian/patches/CVE-2021-4048.patch: return early from clarrv, dlarrv, slarrv and zlarrv when M is zero, so the routines no longer read out-of-bounds entries of IBLOCK and the work array - CVE-2021-4048
osv:CLSA-2026-1790332295
libblas-dev
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
libblas-test
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
libblas3
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
liblapack-dev
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
liblapack-doc
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
liblapack-doc-man
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
liblapack-pic
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
liblapack-test
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
liblapack3
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
liblapacke
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
liblapacke-dev
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
libtmglib-dev
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
libtmglib3
Fixed versions: 3.7.1-4ubuntu1+tuxcare.els1
Complete source record
{
"id": "3b60c32e2bb796723c1db22c645f6fbf2479d3d097b8e14253b99fab6a96293e",
"url": "https://osv.dev/vulnerability/CLSA-2026-1790332295",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2021-4048",
"summary": "* SECURITY UPDATE: Out-of-bounds read in the MRRR eigenvector routines - debian/patches/CVE-2021-4048.patch: return early from clarrv, dlarrv, slarrv and zlarrv when M is zero, so the routines no longer read out-of-bounds entries of IBLOCK and the work array - CVE-2021-4048",
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{
"name": {
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"package": {
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"database_specific": {
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"package": {
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"database_specific": {
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"package": {
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"ecosystem": "TuxCare:Ubuntu:18.04"
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"database_specific": {
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"package": {
"name": "liblapack-doc",
"purl": "pkg:deb/tuxcare/liblapack-doc?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
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"package": {
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"purl": "pkg:deb/tuxcare/liblapack-doc-man?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
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"database_specific": {
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"package": {
"name": "liblapack-pic",
"purl": "pkg:deb/tuxcare/liblapack-pic?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
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"database_specific": {
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],
"package": {
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"purl": "pkg:deb/tuxcare/libtmglib-dev?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
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}
},
{
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}
]
}
],
"package": {
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"purl": "pkg:deb/tuxcare/libtmglib3?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
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}
}
],
"modified": "2026-10-26T09:32:03.872178919Z",
"provider": "osv",
"upstream": [
"CVE-2021-4048"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1790332295.html",
"https://nvd.nist.gov/vuln/detail/CVE-2021-4048"
]
},
"related_cves": [
{
"value": "CVE-2021-4048",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449558,
"published_at": "2026-09-25T10:31:48+00:00"
}