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).
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Affected Vendors & Products
References
History
Tue, 07 Apr 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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). | |
| Title | Libarchive: a null pointer dereference vulnerability exists in the acl parser of libarchive | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat openshift |
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| Weaknesses | CWE-476 | |
| CPEs | cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat openshift |
|
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-04-07T16:31:23.656Z
Reserved: 2026-04-07T14:32:58.869Z
Link: CVE-2026-5745
Updated: 2026-04-07T16:31:21.083Z
Status : Received
Published: 2026-04-07T16:16:32.307
Modified: 2026-04-07T16:16:32.307
Link: CVE-2026-5745
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OpenCVE Enrichment
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