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30b10fd08f
This fixes the following vulnerability:
- CVE-2026-11940:
tarfile.extractall() with the 'data' or 'tar' filter could be
bypassed by a crafted archive where a hardlink references a symlink
stored at a deeper name than the hardlink itself. The extraction
fallback validated the symlink at it's archived location but
recreated it at the hardlink's shallower path, letting a relative
target the filter judged contained escape the destination directory.
This allowed a malicious tar archive to create a symlink pointing
outside the destination, enabling out-of-destination file reads or
writes. This was an incomplete fix of CVE-2025-4330.
https://www.cve.org/CVERecord?id=CVE-2026-11940
Signed-off-by: Titouan Christophe <titouan.christophe@mind.be>
(cherry picked from commit 1a0164ac81)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at https://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches