Accepted libarchive 3.7.4-4+deb13u1 (source) into proposed-updates

Debian FTP Masters Wed, 06 May 2026 11:32:48 -0700
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Hash: SHA512

Format: 1.8
Date: Fri, 24 Apr 2026 11:36:34 +0700
Source: libarchive
Architecture: source
Version: 3.7.4-4+deb13u1
Distribution: trixie
Urgency: medium
Maintainer: Peter Pentchev <[email protected]>
Changed-By: Arnaud Rebillout <[email protected]>
Closes: 1107624 1130753 1131444 1131446 1133002
Changes:
 libarchive (3.7.4-4+deb13u1) trixie; urgency=medium
 .
   * Non-maintainer upload by the LTS team.
 .
   [ Bastien Roucaries ]
   * Fix CVE-2025-5918 (Closes: #1107624)
     A vulnerability has been identified in the libarchive library. This flaw
     can be triggered when file streams are piped into bsdtar, potentially
     allowing for reading past the end of the file.  This out-of-bounds read
     can lead to unintended consequences, including unpredictable program
     behavior, memory corruption, or a denial-of-service condition.
 .
   [ Arnaud Rebillout ]
   * Fix CVE-2026-4111 (Closes: #1130753)
     A flaw was identified in the RAR5 archive decompression logic of the
     libarchive library, specifically within the archive_read_data() processing
     path. When a specially crafted RAR5 archive is processed, the
     decompression routine may enter a state where internal logic prevents
     forward progress.  This condition results in an infinite loop that
     continuously consumes CPU resources. Because the archive passes checksum
     validation and appears structurally valid, affected applications cannot
     detect the issue before processing. This can allow attackers to cause
     persistent denial-of-service conditions in services that automatically
     process archives.
   * Fix CVE-2026-4424 (Closes: #1131446)
     A flaw was found in libarchive. This heap out-of-bounds read vulnerability
     exists in the RAR archive processing logic due to improper validation of
     the LZSS sliding window size after transitions between compression
     methods. A remote attacker can exploit this by providing a specially
     crafted RAR archive, leading to the disclosure of sensitive heap memory
     information without requiring authentication or user interaction.
   * Fix CVE-2026-4426 (Closes: #1131444)
     A flaw was found in libarchive. An Undefined Behavior vulnerability exists
     in the zisofs decompression logic, caused by improper validation of a
     field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A remote
     attacker can exploit this by supplying a specially crafted ISO file. This
     can lead to incorrect memory allocation and potential application crashes,
     resulting in a denial-of-service (DoS) condition.
   * Fix CVE-2026-5121 (Closes: #1133002)
     A flaw was found in libarchive. On 32-bit systems, an integer overflow
     vulnerability exists in the zisofs block pointer allocation logic. A
     remote attacker can exploit this by providing a specially crafted ISO9660
     image, which can lead to a heap buffer overflow. This could potentially
     allow for arbitrary code execution on the affected system.
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Accepted libarchive 3.7.4-4+deb13u1 (source) into proposed-updates

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