{"id":"CLSA-2026-1790332295","summary":"Fix CVE(s): CVE-2021-4048","details":"   * SECURITY UPDATE: Out-of-bounds read in the MRRR eigenvector routines\n     - debian/patches/CVE-2021-4048.patch: return early from clarrv, dlarrv,\n       slarrv and zlarrv when M is zero, so the routines no longer read\n       out-of-bounds entries of IBLOCK and the work array\n     - CVE-2021-4048","modified":"2026-10-26T09:32:03.872178919Z","published":"2026-09-25T10:31:48Z","upstream":["CVE-2021-4048"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1790332295.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4048"}],"affected":[{"package":{"name":"libblas-dev","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libblas-dev?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790332295.json"}},{"package":{"name":"libblas-test","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libblas-test?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790332295.json"}},{"package":{"name":"libblas3","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libblas3?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790332295.json"}},{"package":{"name":"liblapack-dev","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/liblapack-dev?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790332295.json"}},{"package":{"name":"liblapack-doc","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/liblapack-doc?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790332295.json"}},{"package":{"name":"liblapack-doc-man","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/liblapack-doc-man?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790332295.json"}},{"package":{"name":"liblapack-pic","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/liblapack-pic?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790332295.json"}},{"package":{"name":"liblapack-test","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/liblapack-test?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790332295.json"}},{"package":{"name":"liblapack3","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/liblapack3?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790332295.json"}},{"package":{"name":"liblapacke","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/liblapacke?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790332295.json"}},{"package":{"name":"liblapacke-dev","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/liblapacke-dev?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790332295.json"}},{"package":{"name":"libtmglib-dev","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libtmglib-dev?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1790332295.json"}},{"package":{"name":"libtmglib3","ecosystem":"TuxCare:Ubuntu:18.04","purl":"pkg:deb/tuxcare/libtmglib3?distro=ubuntu-18.04"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.1-4ubuntu1+tuxcare.els1"}]}],"database_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