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TI-2026-03112 Aliases CVE-2026-3608GHSA-8xcr-6f99-hm7w

Stack overflow in Kea daemons

Priority MEDIUM 42CWE-617Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-617.

Summary

Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error. This issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01385 72nd percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ISCKea2.6.0 – 2.6.4; 3.0.0 – 3.0.2—No fix listedCNA
  • Kea VendorISC Affected 2.6.0 – 2.6.4; 3.0.0 – 3.0.2 Fixed in — No fix listed CNA

Remediation

Red Hat 2 advisories

  • RHSA-2026:11344 Released 2026-04-28 · Red Hat rating Important
    kea security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kea-doc-2.6.3-2.el10_0.3, kea-hooks-2.6.3-2.el10_0.3
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kea-2.6.3-2.el10_0.3, kea-libs-2.6.3-2.el10_0.3
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kea-keama-2.6.3-2.el10_0.3
  • RHSA-2026:7342 Released 2026-04-09 · Red Hat rating Important
    kea security update
    • Red Hat Enterprise Linux AppStream (v. 10) kea-doc-3.0.1-3.el10_1, kea-hooks-3.0.1-3.el10_1
    • Red Hat Enterprise Linux BaseOS (v. 10) kea-3.0.1-3.el10_1, kea-libs-3.0.1-3.el10_1
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kea-keama-3.0.1-3.el10_1

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:7342
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:11344
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:7342
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:11344
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:7342
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:11344

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-3608
  2. 2026-10-03 Alias added: GHSA-8xcr-6f99-hm7w

References

Patch 2

Advisory 1

  • TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
  • TI-2023-27571 Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related… CVSS 3.1HIGH 7.5
  • TI-2021-07476 A second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack CVSS 3.1CRITICAL 9.8
  • TI-1999-00042 Command execution via shell metachars in INN daemon (innd) 1.5 using "newgroup" and… CVSS 3.1CRITICAL 9.8
  • TI-2023-27773 The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance… CVSS 3.1HIGH 7.5
  • TI-2025-27240 Cache poisoning attacks with unsolicited RRs CVSS 3.1HIGH 8.6
See all 285 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences