CVE-2026-104032— Sssd: sssd: denial of service via unprivileged autofs cache invalidation
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.
在SSSD中发现了一个漏洞。未经授权的本地用户可以通过autofs响应程序反复请求主自动挂载映射更新，这是由于缺少授权检查所致。这会触发全局缓存失效，并迫使频繁查找后端目录提供程序，从而导致因自动挂载可用性降低和资源消耗增加而引发的拒绝服务（DoS）攻击。
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I. Basic Information for CVE-2026-104032
Vulnerability Information
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Vulnerability Title
Sssd: sssd: denial of service via unprivileged autofs cache invalidation
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in SSSD. An unprivileged local user can repeatedly request master automount map updates through the autofs responder due to missing authorization checks. This triggers global cache invalidation and forces repeated lookups to backend directory providers, leading to a Denial of Service (DoS) from degraded automount availability and elevated resource consumption.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不正确的行为次序：早期放大攻击
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-2026-104032
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-104032 (2)
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🔗 2479381 – (CVE-2026-104032) CVE-2026-104032 sssd: sssd: Denial of Service via unprivileged autofs cache invalidation Read full article issue-tracking x_refsource_REDHAT
Same Patch Batch · Red Hat · 2026-10-06 · 16 CVEs total
| CVE-2026-92821 | 6.8 MEDIUM | Sssd: sssd: access control bypass via premature ldap access rule evaluation |
| 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-2026-104043 | 5.5 MEDIUM | Sssd: sssd: denial of service via undersized packet parsing in nss responder |
| CVE-2026-104042 | 5.5 MEDIUM | Sssd: sssd: denial of service via out-of-bounds read in pam responder |
| CVE-2026-104041 | 5.5 MEDIUM | Sssd: sssd: denial of service via unbounded negative cache growth |
| CVE-2026-104037 | 5.5 MEDIUM | Sssd: sssd: denial of service via packet length underflow in autofs responder |
| CVE-2026-104035 | 5.5 MEDIUM | Sssd: sssd: denial of service via memory exhaustion in kcm responder |
| CVE-2026-104031 | 5.5 MEDIUM | Sssd: sssd: denial of service via memory exhaustion in autofs 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-2026-104039 | 4.7 MEDIUM | Sssd: sssd: denial of service via stale connection state reuse in pam gssapi responder |
| CVE-2026-104034 | 4.7 MEDIUM | Sssd: sssd: denial of service via use-after-free in kcm ticket renewal |
| CVE-2026-104040 | 4.4 MEDIUM | Sssd: sssd: information disclosure via odata injection in entra id lookups |
IV. Related Vulnerabilities
Same product: Red Hat Enterprise Linux 10
-
CVE-2026-104044
Sssd: sssd: denial of service via crafted passkey kerberos a -
CVE-2026-104043
Sssd: sssd: denial of service via undersized packet parsing -
CVE-2026-104042
Sssd: sssd: denial of service via out-of-bounds read in pam -
CVE-2026-104041
Sssd: sssd: denial of service via unbounded negative cache g -
CVE-2026-104040
Sssd: sssd: information disclosure via odata injection in en
Same vendor: Red Hat
-
CVE-2026-105305
Keycloak-services: keycloak-services: device authorization g -
CVE-2026-104044
Sssd: sssd: denial of service via crafted passkey kerberos a -
CVE-2026-104043
Sssd: sssd: denial of service via undersized packet parsing -
CVE-2026-104042
Sssd: sssd: denial of service via out-of-bounds read in pam -
CVE-2026-104041
Sssd: sssd: denial of service via unbounded negative cache g
Same weakness: CWE-408
-
CVE-2026-11605
Unnecessary validation of DNSSEC signed records -
CVE-2026-3592
Amplification vulnerabilities via self-pointed glue records -
CVE-2026-41405
OpenClaw < 2026.3.31 - Resource Exhaustion via Unauthenticat -
CVE-2026-41374
OpenClaw < 2026.3.31 - Resource Consumption via Discord Audi -
CVE-2026-41331
OpenClaw < 2026.3.31 - Resource Consumption via Unauthorized
V. Comments for CVE-2026-104032
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