Product

Red Hat Enterprise Linux

By Red Hat

Red Hat Enterprise Linux (RHEL) is a commercial open-source Linux distribution developed by Red Hat for the commercial market.


Website
https://redhat.com/rhel/
CPE product names
enterprise_linuxRed Hat Enterprise Linux 6

Recent vulnerabilities

2817 published under this product's CPE names in cvelistv5

CVE-2026-55653 (GCVE-0-2026-55653)

Vulnerability from cvelistv5 – Published: 2026-06-23 03:36 – Updated: 2026-10-06 15:17
VLAI
Title
Openssh: double free in red hat enterprise linux versions of openssh dh-gex client path during fips known-group validation leads to client-side denial of service
Summary
A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 14:30 UTC
CWE
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:36759 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47755 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47756 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47757 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:54387 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:58981 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:76748 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-55653 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2462351 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:9.9p1-25.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:9.9p1-7.el10_0.5 , < * (rpm)
    cpe:/o:redhat:enterprise_linux_eus:10.0
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:8.0p1-30.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/o:redhat:enterprise_linux:8::baseos
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:9.9p1-9.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
Create a notification for this product.
Red Hat Red Hat Hardened Images Unaffected: 10.3p1-6.hum1 , < * (rpm)
    cpe:/a:redhat:hummingbird:1
Create a notification for this product.
Red Hat Red Hat Update Infrastructure 5 Unaffected: 1786435483 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
Create a notification for this product.
Red Hat Red Hat Update Infrastructure 5 Unaffected: 1786533529 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
Create a notification for this product.
Red Hat Red Hat Update Infrastructure 5 Unaffected: 1787135742 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
Create a notification for this product.
Red Hat Red Hat Update Infrastructure 5 Unaffected: 1787241260 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
Create a notification for this product.
Date Public
2026-06-22 23:17
Show details on NVD website

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CVE-2026-55655 (GCVE-0-2026-55655)

Vulnerability from cvelistv5 – Published: 2026-06-23 03:36 – Updated: 2026-10-06 15:17
VLAI
Title
Openssh: local mitm of x11 forwarding via abstract unix socket pre-binding in red hat enterprise linux openssh client versions
Summary
A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a local UNIX-domain X socket is used. A successful attack can compromise the confidentiality of forwarded X11 traffic, including sensitive window contents and input, and may allow some manipulation of the forwarded session.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 12:21 UTC
CWE
  • CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:36759 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47755 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47756 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:47757 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:54387 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:58981 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:76748 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-55655 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2462250 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:9.9p1-25.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:9.9p1-7.el10_0.5 , < * (rpm)
    cpe:/o:redhat:enterprise_linux_eus:10.0
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:8.0p1-30.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/o:redhat:enterprise_linux:8::baseos
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:9.9p1-9.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
Create a notification for this product.
Red Hat Red Hat Hardened Images Unaffected: 10.3p1-6.hum1 , < * (rpm)
    cpe:/a:redhat:hummingbird:1
Create a notification for this product.
Red Hat Red Hat Update Infrastructure 5 Unaffected: 1786435483 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
Create a notification for this product.
Red Hat Red Hat Update Infrastructure 5 Unaffected: 1786533529 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
Create a notification for this product.
Red Hat Red Hat Update Infrastructure 5 Unaffected: 1787135742 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
Create a notification for this product.
Red Hat Red Hat Update Infrastructure 5 Unaffected: 1787241260 , < * (rpm)
    cpe:/a:redhat:rhui:5::el9
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
Create a notification for this product.
Date Public
2026-06-22 23:22
Show details on NVD website

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CVE-2026-104034 (GCVE-0-2026-104034)

Vulnerability from cvelistv5 – Published: 2026-10-06 00:12 – Updated: 2026-10-06 14:47
VLAI
Title
Sssd: sssd: denial of service via use-after-free in kcm ticket renewal
Summary
A flaw was found in SSSD. A use-after-free vulnerability exists in the Kerberos Credential Manager (KCM) responder during Kerberos ticket-granting ticket (TGT) renewal, where a deferred callback accesses memory that has already been released. An authenticated local user with a renewable Kerberos ticket can trigger this issue on systems configured with KCM renewal, causing the KCM responder service to crash and resulting in a Denial of Service (DoS).
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 14:42 UTC
CWE
  • CWE-825 - Expired Pointer Dereference
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-104034 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2479178 issue-trackingx_refsource_REDHAT
Date Public
2026-10-05 23:29
Show details on NVD website

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CVE-2026-92821 (GCVE-0-2026-92821)

Vulnerability from cvelistv5 – Published: 2026-10-06 00:12 – Updated: 2026-10-06 14:47
VLAI
Title
Sssd: sssd: access control bypass via premature ldap access rule evaluation
Summary
A flaw was found in SSSD. When configured to evaluate password expiration warnings before restrictive access rules in LDAP (Lightweight Directory Access Protocol) environments, an expired-password warning terminates rule evaluation early and treats the access request as successful. A remote authenticated user with an expired password using an alternative authentication method, such as SSH public key authentication, can exploit this flaw to bypass access control restrictions and gain unauthorized access to protected systems.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 14:42 UTC
CWE
  • CWE-393 - Return of Wrong Status Code
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-92821 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2479031 issue-trackingx_refsource_REDHAT
Date Public
2026-10-05 23:50
Show details on NVD website

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CVE-2026-104043 (GCVE-0-2026-104043)

Vulnerability from cvelistv5 – Published: 2026-10-06 01:02 – Updated: 2026-10-06 14:47
VLAI
Title
Sssd: sssd: denial of service via undersized packet parsing in nss responder
Summary
A flaw was found in SSSD. A local attacker with access to the Name Service Switch (NSS) responder UNIX socket can trigger an integer underflow by sending a specially crafted request with an undersized packet header. This issue causes an out-of-bounds memory read during packet parsing, crashing the responder process and resulting in a Denial of Service (DoS).
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 14:42 UTC
CWE
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-104043 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2478852 issue-trackingx_refsource_REDHAT
Date Public
2026-10-06 00:49
Show details on NVD website

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CVE-2026-104030 (GCVE-0-2026-104030)

Vulnerability from cvelistv5 – Published: 2026-10-05 19:07 – Updated: 2026-10-06 13:37
VLAI
Title
Sssd: sssd: denial of service via out-of-bounds read during passkey parsing
Summary
A flaw was found in sssd. This vulnerability allows a local user to cause a Denial of Service (DoS) by submitting a specially crafted passkey authentication token that lacks null terminators. The authentication service reads past the end of the provided memory buffer, causing the process to crash and disrupting authentication services.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 13:37 UTC
CWE
References
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https://access.redhat.com/security/cve/CVE-2026-104030 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2479429 issue-trackingx_refsource_REDHAT
Date Public
2026-10-05 17:23
Show details on NVD website

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CVE-2026-104032 (GCVE-0-2026-104032)

Vulnerability from cvelistv5 – Published: 2026-10-06 00:12 – Updated: 2026-10-06 13:34
VLAI
Title
Sssd: sssd: denial of service via unprivileged autofs cache invalidation
Summary
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.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 13:32 UTC
CWE
  • CWE-408 - Incorrect Behavior Order: Early Amplification
References
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https://bugzilla.redhat.com/show_bug.cgi?id=2479381 issue-trackingx_refsource_REDHAT
Date Public
2026-10-05 23:24
Show details on NVD website

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CVE-2026-104037 (GCVE-0-2026-104037)

Vulnerability from cvelistv5 – Published: 2026-10-06 00:12 – Updated: 2026-10-06 13:28
VLAI
Title
Sssd: sssd: denial of service via packet length underflow in autofs responder
Summary
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).
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 13:27 UTC
CWE
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-104037 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2479030 issue-trackingx_refsource_REDHAT
Date Public
2026-10-05 23:50
Show details on NVD website

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CVE-2026-104041 (GCVE-0-2026-104041)

Vulnerability from cvelistv5 – Published: 2026-10-06 01:00 – Updated: 2026-10-06 13:21
VLAI
Title
Sssd: sssd: denial of service via unbounded negative cache growth
Summary
A flaw was found in SSSD. An unprivileged local user can repeatedly request lookups for nonexistent entries through the Name Service Switch (NSS) responder. Because the negative cache does not limit the total number of stored entries and only removes expired records when an existing key is rechecked, the cache can grow without bound. This behavior can lead to memory exhaustion, resulting in a Denial of Service (DoS) as the responder becomes unresponsive or terminates.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 13:19 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-104041 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2478864 issue-trackingx_refsource_REDHAT
Date Public
2026-10-06 00:42
Show details on NVD website

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CVE-2026-104031 (GCVE-0-2026-104031)

Vulnerability from cvelistv5 – Published: 2026-10-06 00:10 – Updated: 2026-10-06 13:02
VLAI
Title
Sssd: sssd: denial of service via memory exhaustion in autofs responder
Summary
A flaw was found in SSSD. In configurations where the autofs responder service is enabled, memory allocated during successful request processing is not released until the client connection terminates. A local attacker can exploit this vulnerability by maintaining an open connection and repeatedly submitting valid requests, leading to memory exhaustion and a Denial of Service (DoS).
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 13:01 UTC
CWE
  • CWE-772 - Missing Release of Resource after Effective Lifetime
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-104031 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2479418 issue-trackingx_refsource_REDHAT
Date Public
2026-10-05 21:45
Show details on NVD website

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displaying 1 - 10 vulnerabilities in total 2817