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HIGH

CVE-2022-38178

CVSS v3

7.5

HIGH

EPSS Score

3.0 %

exploit probability, as of 2026-10-20

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • bindAlmaLinux:9all versions · fixed in 32:9.16.23-1.el9_0.1and 8 other packages
  • bindAlmaLinux:8all versions · fixed in 32:9.11.36-3.el8_6.1and 16 other packages
  • bind9.16AlmaLinux:8all versions · fixed in 32:9.16.23-0.7.el8_6.1and 8 other packages

Vendor advisories

  • CVE-2022-38178 Red Hat Product Security1,741 products fixed

    bind: memory leaks in EdDSA DNSSEC verification code

  • ICSA-25-105-08 CISA2 known affected

    ABB M2M Gateway

    ABB M2M Gateway ARM600, firmware versions = 4.1.2 <= 5.0.3 · ABB M2M Gateway SW, software versions = 5.0.1 <= 5.0.3

  • RHSA-2022:8598 Red Hat Product Security2 products fixed

    Red Hat Security Advisory: Red Hat Virtualization Host security update [ovirt-4.5.3-1]

  • RHSA-2022:6780 Red Hat Product Security171 products fixed

    Red Hat Security Advisory: bind security update

  • RHSA-2022:6778 Red Hat Product Security171 products fixed

    Red Hat Security Advisory: bind security update

  • RHSA-2022:6781 Red Hat Product Security75 products fixed

    Red Hat Security Advisory: bind9.16 security update

4 more advisories

Full record on NVD

Description

By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2022-09-21
Last Modified
2026-09-01

Frequently asked questions

What is CVE-2022-38178?

By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.

Is CVE-2022-38178 actively exploited?

Active exploitation of CVE-2022-38178 has not been confirmed. Its EPSS score was 3.0% on 2026-10-20, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-38178?

CVE-2022-38178 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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