[CLSA-2026:1790211579] Fix CVE(s): CVE-2026-82049
Type:
security
Severity:
Important
Release date:
2026-09-24 00:59:51 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 3.11.16 and blocks the variant that never reaches os.link() - CVE-2026-82049
CVEs fixed:
Updated packages:
  • alt-python311_3.11.16-2_amd64.deb
    sha:05c88fbc51effc75df3e2d20c3ced50962b629e6
  • alt-python311-debug_3.11.16-2_amd64.deb
    sha:68179439607b462fc93d092d57eee5f2e8fd90a2
  • alt-python311-devel_3.11.16-2_amd64.deb
    sha:f8e03ab0c022c13ea18b4048f4e7962ea4ecb15e
  • alt-python311-idle_3.11.16-2_amd64.deb
    sha:8c275965e9fb95198d5228bc7d618003ec4b1b18
  • alt-python311-libs_3.11.16-2_amd64.deb
    sha:b9cb9e774f70a778e61c0439edc5a032933172c3
  • alt-python311-test_3.11.16-2_amd64.deb
    sha:e0897e886ac4f8c3498ea93dd3436a29bde6a710
  • alt-python311-tkinter_3.11.16-2_amd64.deb
    sha:60c5810d61a133993db43fbd1da00fbd84745445
  • alt-python311_3.11.16-2_arm64.deb
    sha:efe926f4fff51d9d5f5beedf35c773f755bf5d83
  • alt-python311-debug_3.11.16-2_arm64.deb
    sha:89dbfe8740b7a880e5ad1cafbfcc0a3a5d040517
  • alt-python311-devel_3.11.16-2_arm64.deb
    sha:8456aacb40e499d0f58dcd97bef21247cc198e96
  • alt-python311-idle_3.11.16-2_arm64.deb
    sha:2bc228c805d82e86c6e3ad563f409f59ff5bb595
  • alt-python311-libs_3.11.16-2_arm64.deb
    sha:f0e690f6e7e61adeab8335188d9cde9242c42a2a
  • alt-python311-test_3.11.16-2_arm64.deb
    sha:9a5aa18a9586979efcee95e03c1373e45aa0a732
  • alt-python311-tkinter_3.11.16-2_arm64.deb
    sha:9b906831fc670a407ada360017325f449e6ca40d
Notes:
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