[CLSA-2026:1790186219] Fix CVE(s): CVE-2026-82049
Type:
security
Severity:
Important
Release date:
2026-09-23 17:57:10 UTC
Description:
* SECURITY UPDATE: tarfile data/tar extraction filter bypassed by a hard link whose target is a symlink - debian/patches/CVE-2026-82049.patch: pass os.path.realpath() of the hard-link source to os.link() in makelink_with_filter(), so the extracted name is a hard link to the file the symlink resolves to instead of a second name for the symlink inode itself. link(2) does not follow symlinks, so without this a crafted archive could place a copy of an already-extracted symlink one directory shallower, where its relative payload re-bases outside the destination directory and the chmod/utime that follow change the mode and mtime of the outside file while exposing its contents inside the extracted tree (CWE-59). Also carries upstream's test_sneaky_hardlink_relocation regression test. This fix is effective only in combination with CVE-2026-11940, which is already part of upstream 3.10.21 and blocks the variant that never reaches os.link() - CVE-2026-82049
CVEs fixed:
Updated packages:
  • alt-python310_3.10.21-2_amd64.deb
    sha:adbbcdfe4471c6906bb53c1f1be86e20a6af9310
  • alt-python310-debug_3.10.21-2_amd64.deb
    sha:b134550362a2e73eac28533749ee4632f00e45a4
  • alt-python310-devel_3.10.21-2_amd64.deb
    sha:546b737a818b8fdc98c6660456bab487cb24e11c
  • alt-python310-idle_3.10.21-2_amd64.deb
    sha:e944468a52a0a813db3995c363e95a81b388b4d3
  • alt-python310-libs_3.10.21-2_amd64.deb
    sha:00d162d8eabda362a15f5b76c45506cb65739978
  • alt-python310-test_3.10.21-2_amd64.deb
    sha:de2143e5d9d24229c9b76dafc0b2e4d669c784a5
  • alt-python310-tkinter_3.10.21-2_amd64.deb
    sha:a6cbaba97453f66158076aeda1586882b1ad3477
  • alt-python310_3.10.21-2_arm64.deb
    sha:3427da66d8df274e6c7d9378ad416735e0ea96d8
  • alt-python310-debug_3.10.21-2_arm64.deb
    sha:bba2a2d9ff08403950bfe848acfdf92ef25401d3
  • alt-python310-devel_3.10.21-2_arm64.deb
    sha:f640e1d7ccffba60857265d39b56632fda2541fa
  • alt-python310-idle_3.10.21-2_arm64.deb
    sha:31a658adf20b981c8415b900cd66253dc6ecdc2b
  • alt-python310-libs_3.10.21-2_arm64.deb
    sha:4c4a110d81cbe0edff2a967dfb50d55509719ed0
  • alt-python310-test_3.10.21-2_arm64.deb
    sha:ea0d8fb96fd64062fdce9a39219deeebc5419eda
  • alt-python310-tkinter_3.10.21-2_arm64.deb
    sha:dd1e6119cef9d6a39991235d9d4d417605ff8c18
Notes:
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