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CVE-2026-92824— Libmodulemd: libmodulemd: out-of-bounds read when emitting rpm-map artifacts

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 libmodulemd 中发现了一个漏洞。在模块流 v2 的 rpm-map 输出路径中，内部循环错误地将摘要算法的数量用作其边界，而非当前摘要表中的校验和数量。构造的包含多种摘要类型的 modulemd v2 元数据，可能在 YAML 序列化过程中触发越界读取，通常导致程序崩溃并引发拒绝服务（DoS）。

CVSS 6.2 · Medium

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-92824

Vulnerability Information
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Vulnerability Title
Libmodulemd: libmodulemd: out-of-bounds read when emitting rpm-map artifacts
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in libmodulemd. In the module stream v2 rpm-map emission path, an inner loop incorrectly uses the count of digest algorithms as its bound instead of the number of checksums in the current digest table. Crafted modulemd v2 metadata with multiple digest types can trigger an out-of-bounds read during YAML serialization, typically causing a crash and resulting in a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
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 Hardened Images - cpe:/a:redhat:hummingbird:1
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-92824

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III. Intelligence Information for CVE-2026-92824

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Other References for CVE-2026-92824 (2)

Same Patch Batch · Red Hat · 2026-10-21 · 4 CVEs total

CVE-2026-92822 6.2 MEDIUM Libmodulemd: libmodulemd: unbounded recursion when parsing nested xmd yaml
CVE-2026-92823 6.2 MEDIUM Libmodulemd: libmodulemd: missing decompressed-size limit when parsing compressed yaml
CVE-2026-114038 5.1 MEDIUM Device-mapper-multipath: device-mapper-multipath: information disclosure via malformed for

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-125

V. Comments for CVE-2026-92824

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