OESA-2026-4592

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-4592
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-4592.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-4592
Upstream
CVE (2)
  • CVE-2026-104036
  • CVE-2026-104038
Published
2026-10-29T09:03:20Z
Modified
2026-10-29T09:15:39Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
sssd security update
Details

Provides a set of daemons to manage access to remote directories and authentication mechanisms. It provides an NSS and PAM interface toward the system and a pluggable back end system to connect to multiple different account sources. It is also the basis to provide client auditing and policy services for projects like FreeIPA.

Security Fix(es):

A flaw was found in SSSD's NFS idmap plugin. When retrieving cached user or group names, the plugin detects if an entry exceeds the destination buffer size but fails to abort before copying data. A local attacker can trigger this vulnerability by requesting identity lookups that resolve to oversized cached entries, resulting in an out-of-bounds write. This flaw primarily leads to a Denial of Service (DoS) by crashing the identity mapping service, and may also corrupt adjacent process memory.(CVE-2026-104036)

A flaw was found in sssd. A remote attacker can cause a denial of service (DoS) by submitting a certificate that lacks an expected Security Identifier (SID) extension. In deployments configured with SID-based certificate mapping rules, the service fails to verify the presence of the extension before processing it, causing the process to crash during authentication or lookup operations.(CVE-2026-104038)

Database specific 
{
    "severity":  "Medium"
}
References

Affected packages

openEuler:24.03-LTS-SP1 / sssd

Package

Name
sssd
Purl
pkg:rpm/openEuler/sssd&distro=openEuler-24.03-LTS-SP1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.9.4-30.oe2403sp1

Ecosystem specific 

{
    "aarch64":  [
        "libipa_hbac-2.9.4-30.oe2403sp1.aarch64.rpm",
        "libipa_hbac-devel-2.9.4-30.oe2403sp1.aarch64.rpm",
        "libsss_autofs-2.9.4-30.oe2403sp1.aarch64.rpm",
        "libsss_certmap-2.9.4-30.oe2403sp1.aarch64.rpm",
        "libsss_certmap-devel-2.9.4-30.oe2403sp1.aarch64.rpm",
        "libsss_idmap-2.9.4-30.oe2403sp1.aarch64.rpm",
        "libsss_idmap-devel-2.9.4-30.oe2403sp1.aarch64.rpm",
        "libsss_nss_idmap-2.9.4-30.oe2403sp1.aarch64.rpm",
        "libsss_nss_idmap-devel-2.9.4-30.oe2403sp1.aarch64.rpm",
        "libsss_sudo-2.9.4-30.oe2403sp1.aarch64.rpm",
        "python3-libipa_hbac-2.9.4-30.oe2403sp1.aarch64.rpm",
        "python3-libsss_nss_idmap-2.9.4-30.oe2403sp1.aarch64.rpm",
        "python3-sss-2.9.4-30.oe2403sp1.aarch64.rpm",
        "python3-sss-murmur-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-ad-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-client-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-common-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-common-pac-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-dbus-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-debuginfo-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-debugsource-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-idp-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-ipa-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-kcm-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-krb5-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-krb5-common-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-ldap-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-nfs-idmap-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-proxy-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-tools-2.9.4-30.oe2403sp1.aarch64.rpm",
        "sssd-winbind-idmap-2.9.4-30.oe2403sp1.aarch64.rpm"
    ],
    "noarch":  [
        "python3-sssdconfig-2.9.4-30.oe2403sp1.noarch.rpm",
        "sssd-help-2.9.4-30.oe2403sp1.noarch.rpm"
    ],
    "src":  [
        "sssd-2.9.4-30.oe2403sp1.src.rpm"
    ],
    "x86_64":  [
        "libipa_hbac-2.9.4-30.oe2403sp1.x86_64.rpm",
        "libipa_hbac-devel-2.9.4-30.oe2403sp1.x86_64.rpm",
        "libsss_autofs-2.9.4-30.oe2403sp1.x86_64.rpm",
        "libsss_certmap-2.9.4-30.oe2403sp1.x86_64.rpm",
        "libsss_certmap-devel-2.9.4-30.oe2403sp1.x86_64.rpm",
        "libsss_idmap-2.9.4-30.oe2403sp1.x86_64.rpm",
        "libsss_idmap-devel-2.9.4-30.oe2403sp1.x86_64.rpm",
        "libsss_nss_idmap-2.9.4-30.oe2403sp1.x86_64.rpm",
        "libsss_nss_idmap-devel-2.9.4-30.oe2403sp1.x86_64.rpm",
        "libsss_sudo-2.9.4-30.oe2403sp1.x86_64.rpm",
        "python3-libipa_hbac-2.9.4-30.oe2403sp1.x86_64.rpm",
        "python3-libsss_nss_idmap-2.9.4-30.oe2403sp1.x86_64.rpm",
        "python3-sss-2.9.4-30.oe2403sp1.x86_64.rpm",
        "python3-sss-murmur-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-ad-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-client-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-common-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-common-pac-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-dbus-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-debuginfo-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-debugsource-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-idp-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-ipa-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-kcm-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-krb5-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-krb5-common-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-ldap-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-nfs-idmap-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-proxy-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-tools-2.9.4-30.oe2403sp1.x86_64.rpm",
        "sssd-winbind-idmap-2.9.4-30.oe2403sp1.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4592.json"