Affected: AlmaLinux:10: bsdtar, AlmaLinux:10: libarchive, AlmaLinux:10: libarchive-devel

The libarchive programming library can create and read several different streaming archive formats, including GNU tar, cpio, and ISO 9660 CD-ROM images. Libarchive is used notably in the bsdtar utility, scripting language bindings such as python-libarchive, and several popular desktop file managers.

Security Fix(es):

* libarchive: libarchive: Information disclosure via heap out-of-bounds read in RAR archive processing (CVE-2026-4424)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected: Alpaquita:23: libarchive, Alpaquita:25: libarchive, Alpaquita:stream: libarchive

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.

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.

Affected: openEuler:24.03-LTS: libarchive

is an open-source BSD-licensed C programming library that provides streaming access to a variety of different archive formats, including tar, cpio, pax, zip, and ISO9660 images. The distribution also includes bsdtar and bsdcpio, full-featured implementations of tar and cpio that use . Security Fix(es):

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.(CVE-2026-4424)

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.(CVE-2026-4426)

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 executio…

Security update for libarchive

libxslt: Processing web content may disclose sensitive information nginx: NGINX: Data injection via man-in-the-middle attack on TLS proxied connections openssh: OpenSSH GSSAPI: Information disclosure or denial of service due to uninitialized variables libarchive: Infinite Loop Denial of Service in RAR5 Decompression via archive_read_data() in libarchive libarchive: libarchive: Information disclosure via heap out-of-bounds read in RAR archive processing python: Python: Command-line option injection in webbrowser.open() via crafted URLs libarchive: libarchive: Arbitrary code execution via integer overflow in ISO9660 image processing net/url: Incorrect parsing of IPv6 host literals in net/url vim: Vim: Arbitrary code execution via 'helpfile' option processing nghttp2: nghttp2: Denial of Service via malformed HTTP/2 frames after session termination NGINX: NGINX: Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled NGINX: NGINX: Denial of Service or file modification via buffer overflow in ngx_http_dav_module NGINX: NGINX: Denial of Service due to memory corruption via crafted MP4 file vim: Vim: Arbitrary code execution via OS command injection in the netrw plugin vim: Vim: Denial of service and information disclosure via crafted swap file nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files vim: Vim: Arbitrary code execution via command injection in glob() function

Security update for libarchive

Affected: Ubuntu:Pro:14.04:LTS: libarchive, Ubuntu:Pro:16.04:LTS: libarchive, Ubuntu:Pro:18.04:LTS: libarchive, Ubuntu:Pro:20.04:LTS: libarchive, Ubuntu:22.04:LTS: libarchive, Ubuntu:24.04:LTS: libarchive, Ubuntu:25.10: libarchive, Ubuntu:26.04:LTS: libarchive

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.

The vulnerabilities found in LabX Standard versions 21.3.22 - 21.4.23 are CVE-2025-69419, CVE-2026-0915, CVE-2025-15467, CVE-2026-4800, CVE-2026-33186, CVE-2026-39821, CVE-2026-33671 and are fixed in LabX Standard v21.4.25.

The vulnerabilities found in LabX Enterprise versions 21.3.22 - 21.4.23 are CVE-2026-4800, CVE-2026-33186, CVE-2026-39821, CVE-2026-33671 and are fixed in LabX Enterprise v21.4.25

All other vulnerabilities are to be fixed in the upcoming releases.

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in libarchive ausnutzen, um Informationen offenzulegen und um einen Denial-of-Service-Zustand zu erzeugen.