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Vulnerability · Published Oct 21, 2026 · Assigned by redhat

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

Medium 6.2

In plain English

A medium-severity out-of-bounds read in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).

Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)0.1%top 96.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libmodulemdno fix listedDEBIAN-CVE-2026-92824
Debian:13libmodulemdno fix listedDEBIAN-CVE-2026-92824
Debian:14libmodulemdno fix listedDEBIAN-CVE-2026-92824
Ubuntu:22.04:LTSlibmodulemdno fix listedUBUNTU-CVE-2026-92824
Ubuntu:24.04:LTSlibmodulemdno fix listedUBUNTU-CVE-2026-92824
Ubuntu:26.04:LTSlibmodulemdno fix listedUBUNTU-CVE-2026-92824
Ubuntu:26.10libmodulemdno fix listedUBUNTU-CVE-2026-92824

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 5 see references

Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References