libarchive: Fix of 2 CVEs

CVE-2021-23177: fix extraction of ACLs to the symlink target instead of the link - CVE-2021-31566: do not follow symlinks when fixing up permissions and file flags - CVE-2026-5121: validate pzlog2bs in the iso9660 zisofs reader...

CLSA-2026-1792818643 libarchive: Fix of 2 CVEs

CVE-2021-23177: fix extraction of ACLs to the symlink target instead of the link - CVE-2021-31566: do not follow symlinks when fixing up permissions and file flags - CVE-2026-5121: validate pzlog2bs in the iso9660 zisofs reader...

CVE-2026-89778

A flaw was found in the Linux kernel's isofs ISO 9660 file system component, specifically within the zisofs decompression logic. A local attacker could exploit this vulnerability by mounting a specially crafted ISO9660 image. When a compressed file on such an image contains a malformed 'ZF' Rock...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: isofs: The release function of zisofs incorrectly releases the bufferhead associated with the block pointer. zisofsfillpages reads the compressed block pointer table. The error path releases the current bufferhead; this release...

AlmaLinux 9.2 [TuxCare] Security Update: bsdcat / bsdcpio / bsdtar / libarchive / libarchive-devel Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1777365744)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1777365744 advisory. - A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper...

Rocky Linux 9.6 [TuxCare] Security Update: bsdcat / bsdcpio / bsdtar / libarchive / libarchive-devel (ALMALINUX9.6:CLSA-2026:1777366496)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1777366496 advisory. - A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic....

AZL-102995 CVE-2026-90434 affecting package kernel for versions less than 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: isofs: release zisofs block pointer buffer head zisofsfillpages reads the compressed block pointer table. The error paths release the current bufferhead, the loop also releases the old bufferhead when it advances. However, the...

PT-2026-94782

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the zisofs fill pages function where the compressed block pointer table is read. While error paths and loop advancements correctly release the buffer head, the success...

CVE-2026-90434: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: isofs: release zisofs block pointer buffer head zisofsfillpages reads the compressed block pointer table. The error paths release the current bufferhead, the loop also releases the old bufferhead when it advances. However, the...

DEBIAN-CVE-2026-89778

In the Linux kernel, the following vulnerability has been resolved: isofs: fix out-of-bounds page array access on empty zisofs block zisofsuncompressblock's empty-block fast path returns pcount 17, so a crafted "ZF" Rock Ridge record can set it below PAGESHIFT; the bug is reached by an ordinary...

CVE-2026-89778

In the Linux kernel, the following vulnerability has been resolved: isofs: fix out-of-bounds page array access on empty zisofs block zisofsuncompressblock's empty-block fast path returns pcount 17, so a crafted "ZF" Rock Ridge record can set it below PAGESHIFT; the bug is reached by an ordinary...

CVE-2026-89778

In the Linux kernel, the following vulnerability has been resolved: isofs: fix out-of-bounds page array access on empty zisofs block zisofsuncompressblock's empty-block fast path returns pcount 17, so a crafted "ZF" Rock Ridge record can set it below PAGESHIFT; the bug is reached by an ordinary...

CVE-2026-89778

CVE-2026-89778 is an out-of-bounds page array access in the Linux kernel's zisofs (compressed ISO9660) filesystem. The root cause is in zisofs_uncompress_block()'s empty-block fast path, which returns pcount <

CVE-2026-89778

In the Linux kernel, the following vulnerability has been resolved: isofs: fix out-of-bounds page array access on empty zisofs block zisofsuncompressblock's empty-block fast path returns pcount 17, so a crafted "ZF" Rock Ridge record can set it below PAGESHIFT; the bug is reached by an ordinary...

CVE-2026-89778 isofs: fix out-of-bounds page array access on empty zisofs block

In the Linux kernel, the following vulnerability has been resolved: isofs: fix out-of-bounds page array access on empty zisofs block zisofsuncompressblock's empty-block fast path returns pcount 17, so a crafted "ZF" Rock Ridge record can set it below PAGESHIFT; the bug is reached by an ordinary...

EUVD-2026-80299

In the Linux kernel, the following vulnerability has been resolved: isofs: fix out-of-bounds page array access on empty zisofs block zisofsuncompressblock's empty-block fast path returns pcount 17, so a crafted "ZF" Rock Ridge record can set it below PAGESHIFT; the bug is reached by an ordinary...

CVE-2026-89778: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: isofs: fix out-of-bounds page array access on empty zisofs block zisofsuncompressblock's empty-block fast path returns pcount 17, so a crafted "ZF" Rock Ridge record can set it below PAGESHIFT; the bug is reached by an ordinary...

PT-2026-93384

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An out-of-bounds page array access exists in the zisofs component of the ISO9660 file system. The issue occurs in the zisofs uncompress block function's empty-block fast path, which fail...

CVE-2026-89778: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: isofs: fix out-of-bounds page array access on empty zisofs block zisofsuncompressblock's empty-block fast path returns pcount 17, so a crafted "ZF" Rock Ridge record can set it below PAGESHIFT; the bug is reached by an ordinary...

CVE-2026-89778: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: isofs: fix out-of-bounds page array access on empty zisofs block zisofsuncompressblock's empty-block fast path returns pcount 17, so a crafted "ZF" Rock Ridge record can set it below PAGESHIFT; the bug is reached by an ordinary...