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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 13
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Libarchive Libarchive
cpe:2.3:a:libarchive:libarchive:-:*:*:*:*:*:*:*
|
— | — |
|
Redhat Hardened_Images
cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*
|
— | — |
|
Redhat Openshift_Container_Platform
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
|
— | — |
|
Redhat Openshift_Container_Platform
cpe:2.3:a:redhat:openshift_container_platform:4.16:*:*:*:*:*:*:*
|
— | — |
|
Redhat Openshift_Container_Platform_For_Arm64
cpe:2.3:a:redhat:openshift_container_platform_for_arm64:4.16:*:*:*:*:*:*:*
|
— | — |
|
Redhat Openshift_Container_Platform_For_Power
cpe:2.3:a:redhat:openshift_container_platform_for_power:4.16:*:*:*:*:*:*:*
|
— | — |
|
Redhat Enterprise_Linux
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
|
— | — |
|
Redhat Enterprise_Linux
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
|
— | — |
|
Redhat Enterprise_Linux
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
|
— | — |
|
Redhat Enterprise_Linux
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
|
— | — |
|
Redhat Enterprise_Linux
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
|
— | — |
|
Redhat Enterprise_Linux_Server_Aus
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*
|
— | — |
|
Redhat Enterprise_Linux_Server_Aus
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*
|
— | — |
References 39
https://access.redhat.com/security/cve/CVE-2026-4424
secalert@redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2449006
secalert@redhat.com
https://github.com/libarchive/libarchive/pull/2898
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:8492
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:8510
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:8517
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:8521
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:8534
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:10065
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:10097
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:11768
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:12071
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:12274
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:13812
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:14773
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:14937
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:15087
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:16008
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:16009
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:16030
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:16174
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:17596
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:19724
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:19725
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:20040
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:21690
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:25096
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:8864
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:8865
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:8866
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:8867
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:8873
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:8908
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:8944
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:9026
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:9592
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:9832
secalert@redhat.com
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4424.json
0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:72502
RHSA-2026:72502