CVE-2026-104037— Sssd: sssd: denial of service via packet length underflow 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.
在 SSSD（系统安全服务守护进程）中发现了一个漏洞。本地攻击者可以通过向 autofs 响应器的 UNIX 套接字发送包含无效数据包长度的特制请求，利用此问题。该漏洞会导致整数下溢和越界内存读取，从而可能使响应器进程崩溃，并最终导致拒绝服务（DoS）。
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I. Basic Information for CVE-2026-104037
Vulnerability Information
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Vulnerability Title
Sssd: sssd: denial of service via packet length underflow in autofs responder
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in SSSD. A local attacker can exploit this issue by sending a specially crafted request with an invalid packet length to the autofs responder UNIX socket. This causes an integer underflow and an out-of-bounds memory read, which can crash the responder process and result in a denial of service (DoS).
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
跨界内存读
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
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| 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-2026-104037
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-104037 (2)
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🔗 2479030 – (CVE-2026-104037) CVE-2026-104037 sssd: sssd: Denial of Service via packet length underflow in autofs responder 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-2026-104035 | 5.5 MEDIUM | Sssd: sssd: denial of service via memory exhaustion in kcm responder |
| CVE-2026-104032 | 5.5 MEDIUM | Sssd: sssd: denial of service via unprivileged autofs cache invalidation |
| 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-125
-
CVE-2026-105775
vllm-project vLLM Completions Request mamba_mixer2.py conv_s -
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-2026-104029
Sssd: sssd: denial of service via out-of-bounds read in auto -
CVE-2026-104030
Sssd: sssd: denial of service via out-of-bounds read during
V. Comments for CVE-2026-104037
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