CVE-2022-2906

Memory leaks in code handling Diffie-Hellman key exchange via TKEY RRs (OpenSSL 3.0.0+ only)

Published Sep 21, 2022 CVSS 3.1 · 7.5 High EPSS 2.0% KEV · Not listed
Description
An attacker can leverage this flaw to gradually erode available memory to the point where named crashes for lack of resources. Upon restart the attacker would have to begin again, but nevertheless there is the potential to deny service.

Remediation

Vendor Solution

Upgrade to the patched release most closely related to your current version of BIND: BIND 9.18.7 or BIND 9.19.5.


Vendor Workaround

There are no known workarounds. TKEY record processing in GSS-TSIG mode is not affected by this defect. The memory leak impacts authoritative DNS server TKEY record processing only. Client processing (resolver functions) do not trigger this defect.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2022-35134 An attacker can leverage this flaw to gradually erode available memory to the point where named crashes for lack of resources. Upon restart the attacker would have to begin again, but nevertheless there is the potential to deny service.
Ubuntu USN Ubuntu USN USN-5626-1 Bind vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
isc
Published
Updated
May 28, 2025, 3:25 PM
Reserved
Aug 19, 2022, 12:00 AM
Status
Modified
Published
Sep 21, 2022, 11:15 AM
Modified
Jun 17, 2026, 4:42 AM
Severity
Moderate
Public date
Sep 21, 2022, 12:00 AM