CVE catalog

CVE-2026-92824

libmodulemd: CVE-2026-92824

Severity: Medium · CVSS 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Oct 21, 2026, 3:03:55 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.12% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libmodulemd	sid	`2.15.3-1`	vulnerable
Debian	libmodulemd	forky	`2.15.3-1`	vulnerable
Debian	libmodulemd	trixie	`2.15.0-1`	vulnerable
Debian	libmodulemd	bookworm	`2.14.0-3`	vulnerable
Ubuntu	libmodulemd	22.04	`2.12.0-1`	vulnerable
Ubuntu	libmodulemd	22.04	`2.13.0-1`	vulnerable
Ubuntu	libmodulemd	24.04	`2.14.0-3`	vulnerable
Ubuntu	libmodulemd	24.04	`2.14.0-3build1`	vulnerable
Ubuntu	libmodulemd	24.04	`2.14.0-3build2`	vulnerable
Ubuntu	libmodulemd	26.10	`2.15.2-3`	vulnerable
Ubuntu	libmodulemd	26.10	`2.15.2-4`	vulnerable
Ubuntu	libmodulemd	26.10	`2.15.3-1`	vulnerable
Ubuntu	libmodulemd	26.04	`2.15.0-1`	vulnerable
Ubuntu	libmodulemd	26.04	`2.15.2-1`	vulnerable
Ubuntu	libmodulemd	26.04	`2.15.2-3`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libmodulemd	source	sid	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	libmodulemd	source	forky	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	libmodulemd	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	libmodulemd	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported

Notes

[trixie] libmodulemd: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[gir1.2-modulemd-2.0]Affected
Source package: [libmodulemd]
Details (2)
- 2.14.0-3 · amd64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
- 2.14.0-3 · arm64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
[libmodulemd2]Affected
Source package: [libmodulemd]
Details (2)
- 2.14.0-3 · amd64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
- 2.14.0-3 · arm64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
[libmodulemd-dev]Affected
Source package: [libmodulemd]
Details (2)
- 2.14.0-3 · amd64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
- 2.14.0-3 · arm64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
[libmodulemd-tools]Affected
Source package: [libmodulemd]
Details (2)
- 2.14.0-3 · amd64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12
- 2.14.0-3 · arm64 · bookworm
  Affected
  dsa · libmodulemd · debian · bookworm; dsa · libmodulemd · debian · 12

[Debian 13 (Trixie)]

[gir1.2-modulemd-2.0]Affected
Source package: [libmodulemd]
Details (2)
- 2.15.0-1 · amd64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
- 2.15.0-1 · arm64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
[libmodulemd2]Affected
Source package: [libmodulemd]
Details (2)
- 2.15.0-1 · amd64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
- 2.15.0-1 · arm64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
[libmodulemd-dev]Affected
Source package: [libmodulemd]
Details (2)
- 2.15.0-1 · amd64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
- 2.15.0-1 · arm64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
[libmodulemd-tools]Affected
Source package: [libmodulemd]
Details (2)
- 2.15.0-1 · amd64 · trixie
  Affected
  dsa · libmodulemd · debian · 13
- 2.15.0-1 · arm64 · trixie
  Affected
  dsa · libmodulemd · debian · 13

Observed: Oct 25, 2026, 2:50:46 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]