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CVE-2026-104045— Sssd: sssd: denial of service via race condition in autofs responder

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SSSD 中发现了一个缺陷。本地用户可通过利用 autofs 响应器在异步枚举完成与映射失效之间的竞态条件，触发拒绝服务（DoS）攻击。通过重复发送并发的映射枚举和失效请求，攻击者可导致内存泄漏，从而引发过度内存消耗，致使 autofs 服务中断或崩溃。

CVSS 4.7 · Medium

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-104045

Vulnerability Information
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Vulnerability Title
Sssd: sssd: denial of service via race condition in autofs responder
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in SSSD. A local user can trigger a Denial of Service (DoS) by exploiting a race condition in the autofs responder between asynchronous enumeration completion and map invalidation. By repeatedly sending concurrent map enumeration and invalidation requests, an attacker can cause memory to leak, leading to excessive memory consumption that can disrupt or crash the autofs service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对已超过有效生命周期的资源丧失索引
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-104045

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III. Intelligence Information for CVE-2026-104045

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Other References for CVE-2026-104045 (2)

Same Patch Batch · Red Hat · 2026-10-06 · 26 CVEs total

CVE-2026-106062 7.8 HIGH Gimp: gimp: heap buffer overflow in dds loader on crafted directdraw surface file
CVE-2026-101258 7.8 HIGH Ghostscript: ghostscript: -dsafer sandbox bypass via type 5 shading oob write and procedur
CVE-2026-83550 7.1 HIGH Postgres-exporter: net/http/pprof exposed on metrics listener
CVE-2026-104048 6.8 MEDIUM Sssd: sssd: authorization bypass via cross-domain username collision in hbac evaluation
CVE-2026-92821 6.8 MEDIUM Sssd: sssd: access control bypass via premature ldap access rule evaluation
CVE-2026-106063 6.3 MEDIUM Gimp: gimp: heap buffer overflow in dicom export on oversized image dimensions
CVE-2026-104046 6.2 MEDIUM Sssd: sssd: denial of service via incomplete identity provider authentication requests
CVE-2026-104044 6.2 MEDIUM Sssd: sssd: denial of service via crafted passkey kerberos authentication request
CVE-2026-104038 5.9 MEDIUM Sssd: sssd: denial of service via missing sid extension in certificate mapping
CVE-2026-104036 5.8 MEDIUM Sssd: sssd: denial of service via out-of-bounds write in nfs idmap plugin
CVE-2026-104031 5.5 MEDIUM Sssd: sssd: denial of service via memory exhaustion in autofs responder
CVE-2026-104032 5.5 MEDIUM Sssd: sssd: denial of service via unprivileged autofs cache invalidation
CVE-2026-104035 5.5 MEDIUM Sssd: sssd: denial of service via memory exhaustion in kcm responder
CVE-2026-104037 5.5 MEDIUM Sssd: sssd: denial of service via packet length underflow in autofs responder
CVE-2026-104041 5.5 MEDIUM Sssd: sssd: denial of service via unbounded negative cache growth
CVE-2026-104042 5.5 MEDIUM Sssd: sssd: denial of service via out-of-bounds read in pam responder
CVE-2026-104043 5.5 MEDIUM Sssd: sssd: denial of service via undersized packet parsing in nss responder
CVE-2026-105305 5.4 MEDIUM Keycloak-services: keycloak-services: device authorization grant bypasses per-client minim
CVE-2026-104033 5.4 MEDIUM Sssd: sssd: access control bypass via improper ldap shadow expiration check
CVE-2026-106033 5.4 MEDIUM Ansible: ansible-ui: ansible ui dom xss in /redirect next parameter

Showing top 20 of 26 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-772

V. Comments for CVE-2026-104045

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