CVE-2026-5745— Libarchive: a null pointer dereference vulnerability exists in the acl parser of libarchive
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I. Basic Information for CVE-2026-5745
Vulnerability Information
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Vulnerability Title
Libarchive: a null pointer dereference vulnerability exists in the acl parser of libarchive
Source: NVD (National Vulnerability Database)
Vulnerability 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).
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
libarchive 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libarchive是libarchive开源的一款多格式存档和压缩库。 libarchive存在代码问题漏洞，该漏洞源于ACL解析逻辑存在空指针取消引用，可能导致处理恶意存档文件时应用程序崩溃和拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat Hardened Images | 3.8.7-1.hum1 ~ * | cpe:/a:redhat:hummingbird:1 | |
| Red Hat | Red Hat Enterprise Linux 10 | - | cpe:/o:redhat:enterprise_linux:10 | |
| Red Hat | Red Hat Enterprise Linux 6 | - | cpe:/o:redhat:enterprise_linux:6 | |
| Red Hat | Red Hat Enterprise Linux 7 | - | cpe:/o:redhat:enterprise_linux:7 | |
| Red Hat | Red Hat Enterprise Linux 8 | - | cpe:/o:redhat:enterprise_linux:8 | |
| Red Hat | Red Hat Enterprise Linux 9 | - | cpe:/o:redhat:enterprise_linux:9 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 |
II. Public POCs for CVE-2026-5745
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|---|
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Same Patch Batch · Red Hat · 2026-04-07 · 4 CVEs total
| CVE-2026-4631 | 9.8 CRITICAL | Cockpit: cockpit: unauthenticated remote code execution due to ssh command-line argument i |
| CVE-2026-4740 | 8.2 HIGH | Rhacm: open cluster management (ocm): cross-cluster privilege escalation via improper kube |
| CVE-2025-14821 | 7.8 HIGH | Libssh: libssh: insecure default configuration leads to local man-in-the-middle attacks on |
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V. Comments for CVE-2026-5745
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