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CVE-2026-12610— Sssd: use-after-free crash in sssd' 'sssd_pam' process

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.

Red Hat System Security Services Daemon是美国Red Hat公司开源的一个Linux中的守护进程组件。 Red Hat System Security Services Daemon存在资源管理错误漏洞，该漏洞源于SSSD PAM响应器中内存指针处理不当导致的释放后重用，可能导致本地攻击者操作智能卡或YubiKey内容，造成拒绝服务中断身份验证，并可能提权。以下版本受到影响：Red Hat Enterprise Linux 8.0版本、Red Hat Enterpri

CVSS 6.4 · Medium EPSS 0.12% · P2

Affected Version Matrix 13

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
any affected
Red Hat Red Hat Enterprise Linux 6 any affected
any unknown
Red Hat Red Hat Enterprise Linux 7 any affected
any unknown
Red Hat Red Hat Enterprise Linux 8 any affected
any affected
Red Hat Red Hat Enterprise Linux 9 any affected
any affected
Red Hat Red Hat Hardened Images any unaffected
Red Hat Red Hat OpenShift Container Platform 4 any affected
any affected
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I. Basic Information for CVE-2026-12610

Vulnerability Information
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Vulnerability Title
Sssd: use-after-free crash in sssd' 'sssd_pam' process
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating smartcard or YubiKey contents, leading to a denial of service that disrupts authentication. This vulnerability also presents a potential for privilege escalation, although it is difficult to exploit.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
无效指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat System Security Services Daemon 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat System Security Services Daemon是美国Red Hat公司开源的一个Linux中的守护进程组件。 Red Hat System Security Services Daemon存在资源管理错误漏洞，该漏洞源于SSSD PAM响应器中内存指针处理不当导致的释放后重用，可能导致本地攻击者操作智能卡或YubiKey内容，造成拒绝服务中断身份验证，并可能提权。以下版本受到影响：Red Hat Enterprise Linux 8.0版本、Red Hat Enterpri
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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 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 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 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 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat Hardened Images - cpe:/a:redhat:hummingbird:1
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-2026-12610

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III. Intelligence Information for CVE-2026-12610

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Vendor Advisories for CVE-2026-12610 (3)

Same Patch Batch · Red Hat · 2026-06-30 · 6 CVEs total

CVE-2026-14164 7.5 HIGH Libarchive: double-free vulnerability in rar5 decompression logic via dangling filtered_bu
CVE-2026-12388 6.5 MEDIUM Keycloak-broker: keycloak: privilege escalation to realm administrator via improper author
CVE-2026-4629 6.5 MEDIUM Keycloak: keycloak: privilege escalation through hardcoded role mapper injection
CVE-2026-13316 4.4 MEDIUM Foreman: ssrf to cloud metada service through unvalidated test_url parameters in foreman c
CVE-2026-14209 4.3 MEDIUM Keycloak-admin-ui: keycloak-admin-ui:admin ui extension brute-force-user endpoint bypasses

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-825

V. Comments for CVE-2026-12610

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