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Details of issue NIXPKGS-2026-2042

NIXPKGS-2026-2042
published 10 hours ago
Libarchive: double-free vulnerability in rar5 decompression logic via dangling filtered_buf pointer in init_unpack()
Permalink CVE-2026-14164
7.5 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
updated 10 hours ago by @LeSuisse Activity log
  • Created suggestion 17 hours ago
  • @LeSuisse ignored
    27 packages
    • libarchive-qt
    • haskellPackages.libarchive
    • kodiPackages.vfs-libarchive
    • perlPackages.ArchiveLibarchive
    • python312Packages.libarchive-c
    • python313Packages.libarchive-c
    • python314Packages.libarchive-c
    • perl5Packages.ArchiveLibarchive
    • perl538Packages.ArchiveLibarchive
    • perl540Packages.ArchiveLibarchive
    • haskellPackages.archive-libarchive
    • haskellPackages.libarchive-conduit
    • perlPackages.ArchiveLibarchivePeek
    • perlPackages.TestArchiveLibarchive
    • perl5Packages.ArchiveLibarchivePeek
    • perl5Packages.TestArchiveLibarchive
    • perl538Packages.ArchiveLibarchivePeek
    • perl538Packages.TestArchiveLibarchive
    • perl540Packages.ArchiveLibarchivePeek
    • perl540Packages.TestArchiveLibarchive
    • perlPackages.ArchiveLibarchiveExtract
    • perl5Packages.ArchiveLibarchiveExtract
    • perl538Packages.ArchiveLibarchiveExtract
    • perl540Packages.ArchiveLibarchiveExtract
    • python312Packages.extractcode-libarchive
    • python313Packages.extractcode-libarchive
    • python314Packages.extractcode-libarchive
    11 hours ago
  • @LeSuisse accepted 11 hours ago
  • @LeSuisse published on GitHub 10 hours ago
Libarchive: double-free vulnerability in rar5 decompression logic via dangling filtered_buf pointer in init_unpack()

A double free issue has been identified in libarchive's RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, resulting in a double-free condition. Successful exploitation may cause applications using the vulnerable libarchive API to terminate unexpectedly, leading to a denial of service.

Affected products

rhcos
libarchive
libarchive-main
  • *

Matching in nixpkgs

pkgs.libarchive

Multi-format archive and compression library

Ignored packages (27)

Package maintainers

Patch: https://github.com/libarchive/libarchive/commit/42453cf16255800726b4efedab25138639ceef20