A flaw was found in libarchive. A NULL pointer dereference vulnerability exists in the ACL parsing logic, specifically within the archive_acl_from_text_nl() function. When processing a malformed ACL string (such as a bare "d" or "default" tag without subsequent fields), the function fails to perform adequate validation before advancing the pointer. An attacker can exploit this by providing a maliciously crafted archive, causing an application utilizing the libarchive API (such as bsdtar) to crash, resulting in a Denial of Service (DoS).
References
| Link | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-5745 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2455921 | Issue Tracking Third Party Advisory |
Configurations
Configuration 1 (hide)
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History
28 Apr 2026, 20:18
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Redhat
Redhat enterprise Linux Libarchive libarchive Libarchive Redhat hardened Images Redhat openshift Container Platform |
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| References | () https://access.redhat.com/security/cve/CVE-2026-5745 - Third Party Advisory | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2455921 - Issue Tracking, Third Party Advisory | |
| CPE | cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* cpe:2.3:a:libarchive:libarchive:-:*:*:*:*:*:*:* |
07 Apr 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-07 16:16
Updated : 2026-04-28 20:18
NVD link : CVE-2026-5745
Mitre link : CVE-2026-5745
CVE.ORG link : CVE-2026-5745
JSON object : View
Products Affected
libarchive
- libarchive
redhat
- openshift_container_platform
- enterprise_linux
- hardened_images
CWE
CWE-476
NULL Pointer Dereference