Description
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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected products
- libarchive / libarchive
- RedHat / enterprise_linux6.0 – 6.0
- RedHat / enterprise_linux7.0 – 7.0
- RedHat / enterprise_linux8.0 – 8.0
- RedHat / enterprise_linux9.0 – 9.0
- RedHat / enterprise_linux10.0 – 10.0
- RedHat / enterprise_linux_server_aus8.2 – 8.2
- RedHat / enterprise_linux_server_aus8.4 – 8.4
- RedHat / hardened_images
- RedHat / openshift_container_platform4.0 – 4.0
- RedHat / openshift_container_platform4.16 – 4.16
- RedHat / openshift_container_platform_for_arm644.16 – 4.16
- RedHat / openshift_container_platform_for_power4.16 – 4.16
References
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:10065
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:10097
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:11768
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:12071
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:12274
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:13812
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:14773
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:14937
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:15087
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:16008
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:16009
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:16030
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:16174
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:17596
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:19724
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:19725
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:20040
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:21690
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:25096
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:8492
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:8510
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:8517
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:8521
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:8534
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:8864
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:8865
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:8866
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:8867
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:8873
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:8908
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:8944
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:9026
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:9592
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:9832
- VENDOR_ADVISORYhttps://access.redhat.com/security/cve/CVE-2026-4424
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=2449006
- PATCHhttps://github.com/libarchive/libarchive/pull/2898
Updated 5m ago · 8 sources