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CVE-2026-54574 is a symlink handling vulnerability in proot-distro, a utility for managing proot containers. Versions prior to 5.1.5 improperly handled archive extraction during proot-distro install. Specifically, _extract_plain_tar() in proot_distro/commands/install.py and _apply_layer() in proot_distro/helpers/docker.py processed plain tarball root filesystems and Docker layers without validating archive-controlled symlink targets stored in member.linkname. A malicious archive can therefore create an absolute symlink pointing outside the intended root filesystem extraction directory and then place subsequent files through that symlink onto the host filesystem. This results in a symlink escape from the container rootfs extraction context into host-accessible paths writable by the Termux process.
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rootfs_dir during both plain tarball extraction and Docker layer application. Ensure all deployments use the fixed release for any installation or reset workflows involving root filesystem archives.No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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