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CVE-2025-4138 · cross-distro fix matrix

CVE-2025-4138: Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination directory, and the modification of some file metadata. You are affected by this vulnerability if using the tarfile module to extract untrusted tar archives using TarFile.extractall() or TarFile.ex

Affects 5 Linux releases across 8 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-4138 has a known fix. Run the listed command on that distro to remediate.

Debian trixie

Source: Debian Security Tracker

  • python3.13→ fixed in3.13.4-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y python3.13

Alpine v3.20

Source: Alpine secdb

  • python3→ fixed in3.12.11-r0
    apk update && apk add --upgrade python3
  • python3-tkinter→ fixed in3.12.11-r0
    apk update && apk add --upgrade python3-tkinter

Alpine v3.21

Source: Alpine secdb

  • python3→ fixed in3.12.11-r0
    apk update && apk add --upgrade python3
  • python3-tkinter→ fixed in3.12.11-r0
    apk update && apk add --upgrade python3-tkinter

Alpine edge

Source: Alpine secdb

  • python3-tkinter→ fixed in3.12.11-r0
    apk update && apk add --upgrade python3-tkinter
  • python3→ fixed in3.12.11-r0
    apk update && apk add --upgrade python3

Alpine v3.19

Source: Alpine secdb

  • python3→ fixed in3.11.13-r0
    apk update && apk add --upgrade python3
Are YOU affected by CVE-2025-4138?

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-2025-4138dropped 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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