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CVE-2021-4048 · cross-distro fix matrix

CVE-2021-4048: An out-of-bounds read flaw was found in the CLARRV, DLARRV, SLARRV, and ZLARRV functions in lapack through version 3.10.0, as also used in OpenBLAS before version 0.3.18. Specially crafted inputs passed to these functions could cause an application using lapack to crash or possibly disclose portions

Affects 2 Linux releases across 4 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-4048 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

  • lapack→ fixed in3.10.0-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y lapack
  • openblas→ fixed in0.3.18+ds-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y openblas

Debian trixie

Source: Debian Security Tracker

  • lapack→ fixed in3.10.0-2urgency: not yet assigned
    sudo apt-get install --only-upgrade -y lapack
  • openblas→ fixed in0.3.18+ds-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y openblas
Are YOU affected by CVE-2021-4048?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash
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CVE-2021-4048dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

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