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CVE-2026-90463

CVE-2026-90463 · Sssd: local oob read in nss service request parsers (`sss_nss_protocol_parse_svc_name` / `sss_nss_protocol_parse_svc_port`)

This page contains facts from public vulnerability sources. Check the original advisory before updating.

A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cause an out-of-bounds read. This out-of-bounds read may lead to a denial of service (DoS) by crashing the NSS responder process. While unprivileged local clients can typically reach the socket, there is no evidence of privilege escalation or reliable data disclosure.

CVSS 4.0 · Medium · EPSS 0.1%

Published
Updated

Stack: system

Affected products and versions

  • red hat enterprise linux 10

    No fix published

  • red hat enterprise linux 6

    No fix published

  • red hat enterprise linux 7

    No fix published

  • red hat enterprise linux 8

    No fix published

  • red hat enterprise linux 9

    No fix published

  • red hat openshift container platform 4

    No fix published

  • sssd Debian:12

    Versions
    • 2.10.1-1
    • 2.10.1-2
    • 2.11.1-1
    • 2.11.1-2
    • 2.11.1-2.1
    • 2.12.0-1
    • 2.12.0-2
    • 2.12.0-3~exp0
    • 2.12.0-4
    • 2.13.1-1
    • 2.13.1-2
    • 2.13.1-3
    • 2.8.2-4
    • 2.8.2-4+deb12u1
    • 2.9.1-1
    • 2.9.1-2
    • 2.9.2-1
    • 2.9.4-1
    • 2.9.4-1.1
    • 2.9.4-1.1~exp1
    • 2.9.4-2
    • 2.9.5-1
    • 2.9.5-2
    • 2.9.5-3
    • 2.9.5-4
    • 2.9.5-5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • sssd Debian:13

    Versions
    • 2.10.1-2
    • 2.11.1-1
    • 2.11.1-2
    • 2.11.1-2.1
    • 2.12.0-1
    • 2.12.0-2
    • 2.12.0-3~exp0
    • 2.12.0-4
    • 2.13.1-1
    • 2.13.1-2
    • 2.13.1-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • sssd Ubuntu:Pro:16.04:LTS

    Versions
    • 1.12.5-2
    • 1.13.1-2
    • 1.13.2-1
    • 1.13.3-1
    • 1.13.4-1
    • 1.13.4-1ubuntu1
    • 1.13.4-1ubuntu1.1
    • 1.13.4-1ubuntu1.2
    • 1.13.4-1ubuntu1.5
    • 1.13.4-1ubuntu1.6
    • 1.13.4-1ubuntu1.7
    • 1.13.4-1ubuntu1.8
    • 1.13.4-1ubuntu1.9
    • 1.13.4-1ubuntu1.10
    • 1.13.4-1ubuntu1.11
    • 1.13.4-1ubuntu1.12
    • 1.13.4-1ubuntu1.13
    • 1.13.4-1ubuntu1.14
    • 1.13.4-1ubuntu1.15
    • 1.13.4-1ubuntu1.15+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • sssd Ubuntu:Pro:18.04:LTS

    Versions
    • 1.15.3-2ubuntu1
    • 1.15.3-3ubuntu1
    • 1.16.0-5ubuntu1
    • 1.16.0-5ubuntu2
    • 1.16.1-1ubuntu1
    • 1.16.1-1ubuntu1.1
    • 1.16.1-1ubuntu1.2
    • 1.16.1-1ubuntu1.3
    • 1.16.1-1ubuntu1.4
    • 1.16.1-1ubuntu1.5
    • 1.16.1-1ubuntu1.6
    • 1.16.1-1ubuntu1.7
    • 1.16.1-1ubuntu1.8
    • 1.16.1-1ubuntu1.8+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • sssd Ubuntu:Pro:20.04:LTS

    Versions
    • 2.2.0-4ubuntu1
    • 2.2.2-1
    • 2.2.2-1ubuntu1
    • 2.2.3-1.1ubuntu1
    • 2.2.3-2
    • 2.2.3-3
    • 2.2.3-3ubuntu0.1
    • 2.2.3-3ubuntu0.2
    • 2.2.3-3ubuntu0.3
    • 2.2.3-3ubuntu0.4
    • 2.2.3-3ubuntu0.6
    • 2.2.3-3ubuntu0.7
    • 2.2.3-3ubuntu0.8
    • 2.2.3-3ubuntu0.9
    • 2.2.3-3ubuntu0.10
    • 2.2.3-3ubuntu0.11
    • 2.2.3-3ubuntu0.12
    • 2.2.3-3ubuntu0.13
    • 2.2.3-3ubuntu0.13+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • sssd Ubuntu:22.04:LTS

    Versions
    • 2.4.1-2ubuntu4
    • 2.5.2-4ubuntu1
    • 2.5.2-4ubuntu3
    • 2.5.2-4ubuntu4
    • 2.6.1-1ubuntu3
    • 2.6.3-1ubuntu3
    • 2.6.3-1ubuntu3.1
    • 2.6.3-1ubuntu3.2
    • 2.6.3-1ubuntu3.3
    • 2.6.3-1ubuntu3.4
    • 2.6.3-1ubuntu3.5
    • 2.6.3-1ubuntu3.6
    • 2.6.3-1ubuntu3.8
    • 2.6.3-1ubuntu3.9
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • sssd Ubuntu:24.04:LTS

    Versions
    • 2.9.1-2ubuntu2
    • 2.9.1-2ubuntu3
    • 2.9.2-1ubuntu2
    • 2.9.4-1ubuntu1
    • 2.9.4-1.1ubuntu3
    • 2.9.4-1.1ubuntu5
    • 2.9.4-1.1ubuntu6
    • 2.9.4-1.1ubuntu6.1
    • 2.9.4-1.1ubuntu6.2
    • 2.9.4-1.1ubuntu6.3
    • 2.9.4-1.1ubuntu6.4
    • 2.9.4-1.1ubuntu6.5
    • 2.9.4-1.1ubuntu6.6
    • 2.9.4-1.1ubuntu6.7
    • 2.9.4-1.1ubuntu6.8
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • sssd Ubuntu:26.10

    Versions
    • 2.12.0-1ubuntu5
    • 2.12.0-4ubuntu1
    • 2.12.0-4ubuntu2
    • 2.12.0-4ubuntu3
    • 2.12.0-4ubuntu4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • sssd Ubuntu:26.04:LTS

    Versions
    • 2.10.1-2ubuntu5
    • 2.10.1-2ubuntu7
    • 2.12.0-1ubuntu3
    • 2.12.0-1ubuntu4
    • 2.12.0-1ubuntu5
    • 2.12.0-1ubuntu5.1
    • 2.12.0-1ubuntu5.2
    • 2.12.0-1ubuntu5.3
    • 2.12.0-1ubuntu5.4
    • 2.12.0-1ubuntu5.5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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