Red Hat Linux Security Advisories & CVEs
5969 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited backstops use a safe source cadence
Android app · Google Play
Monitor Red Hat CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.
Security advisories for your Red Hat release
Pick your distribution release to see every advisory issued for it and its severity mix. Fixes ship as errata — keep the system patched. This is the release's advisory history, not a per-package scan.
Official source
Red Hat Security Data API
Red Hat Enterprise Linux errata (RHSA) via the official Red Hat Security Data API — CVE severity, CVSS and affected packages. A credential-free official source.
Latest Red Hat advisories
Medium [CVE-2026-52863] Denial of service due to memory corruption under specific configurations.
In NLnet Labs Unbound 1.25.0 up to and including 1.25.1, a fix that makes the 'respip' and 'dns64' modules work together, creates a shallow copy of the view name in effect that could lead to memory corruption if the owner of the original view name is jostled out when Unbound is under pressure. Unbound needs to be configured with one of 'respip'/'rpz' modules, together with a module that can attach subqueries (respip CNAME redirection, dns64, subnetcache) and a configured 'access-control-view' while Unbound is under pressure so that joslte logic kicks in and starts dropping slow queries. Likelihood of a crash is low, since it relies heavily on the underlying memory allocator and the memory layout. Debug memory builds (e.g., ASAN) that catch the free terminate the server. A flaw was found in Unbound, a validating, recursive, and caching Domain Name System (DNS) resolver. When configured with specific modules and under heavy load, a memory corruption vulnerability can occur due to improper handling of view names during subquery processing. This issue could lead to a denial of service (DoS) by causing the Unbound server to crash. This Moderate flaw in Unbound arises from memory corruption under specific, non-default configurations involving 'respip' or 'rpz' modules, subquery attachment, and 'access-control-view' when the server is under heavy load.
Medium [CVE-2026-50251] Denial of Service via crafted DNS glue records
In NLnet Labs Unbound up to and including version 1.25.1, when 'unwanted-reply-threshold' is enabled (set to any value greater than zero), glue records of 0.0.0.0/::0 can short-circuit Unbound, on systems that can direct such traffic, by issuing DNS queries and receiving seemingly unwanted replies since the remote IP does not match the original source IP of 0.0.0.0/::0. This behavior keeps on looping for the glue records and pushing the counter to the configured 'unwanted-reply-threshold' that triggers a defensive cache clear. A malicious actor who controls a delegation that returns in-bailiwick glue of 0.0.0.0/::0 can drive the counter to the limit of 'unwanted-reply-threshold' to the threshold and trigger a cache clean of the message and rrset caches; at will, indefinitely, without sending a single spoofed packet. The iterator uses the 0.0.0.0/::0 glue, and a system that can route this (e.g., Linux kernel routes the datagram over loopback), Unbound's own listener answers from 127.0.0.1. Because of the mismatch of 0.0.0.0 and 127.0.0.1, in this example, Unbound accounts the reply as an unwanted (probably spoofed) answer. The counter resets to zero on every cache flush, so the attack loops forever. A flaw was found in Unbound. A remote malicious actor can exploit a vulnerability by controlling a DNS delegation that returns specific glue records.
Medium [CVE-2026-50045] Denial of Service via DNSSEC query amplification bypass
Denial of Service via DNSSEC query amplification bypass. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-406. Red Hat lists fixing advisory RHSA-2026:43588 with package unbound-main-1.25.2-0.1.hum1.
Medium [CVE-2026-14586] Denial of Service via assertion failure in DNS-over-QUIC environments
In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, in DNS-over-QUIC environments, with high concurrency and under pressure, an assertion in libngtcp2 about monotonic timestamps could trigger and result in server termination and thus denial of service. When interfacing with libngtcp2, for DNS-over-QUIC support in Unbound, it is expected to use monotonic time. Unbound was using realtime instead, and in DoQ environments with high concurrency and under pressure, an assert in libngtcp2 for the quic timestamp would trigger and terminate the server. This vulnerability needs Unbound to be compiled with DoQ support ('--with-libngtcp2') and the 'quic-port' to be configured for the listening interfaces. Under heavy DNS-over-QUIC (DoQ) traffic, a timing discrepancy in Unbound’s libngtcp2 library can trigger an assertion failure. This causes the server to crash unexpectedly, resulting in a denial of service (DoS). Moderate: This Unbound vulnerability, leading to a denial of service, is contingent on the resolver being compiled with DNS-over-QUIC (DoQ) support and having a `quic-port` configured. The flaw manifests under high concurrency and network pressure due to a timing discrepancy in the `libngtcp2` library. Red Hat deployments not utilizing DoQ or without the `quic-port` enabled are not affected.
Medium [CVE-2026-16560] heap-buffer-overflow in rdn_av_swap on quoted multivalued RDN
A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation. Red-hat rates this vulnerability as Moderate impact. The function can allow an unauthenticated attacker to send malformed DN requests and trigger the bug. Denial of service is more reliably observed when heap debugging is enabled (for example AddressSanitizer or MALLOC_CHECK_=3), or depending on heap layout and subsequent memory allocator activity. There is no configuration switch to disable DN normalization for client-supplied DNs. Red Hat severity: Moderate — CVSS 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). Weakness: CWE-1220. Affected Red Hat products: Red Hat Directory Server 11; Red Hat Directory Server 12; Red Hat Directory Server 13; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: 389-ds-base.
Medium [CVE-2026-44192] Remote Code Execution and Data Exfiltration via Path Traversal
A flaw was found in the Ansible Lightspeed Model Context Protocol (MCP) server. This vulnerability, known as path traversal, allows an attacker to manipulate an AI agent through indirect prompt injection. By doing so, the attacker can cause the server to write files to unauthorized locations on the user's system. This can result in the exposure of sensitive host information and enable the attacker to execute malicious commands, potentially leading to a full system compromise. This can lead to critical host data exfiltration or staged remote code execution when a user initiates an Ansible Execution Environment build, enabling access to sensitive host files or execution of malicious commands. Note the VS Code extension is distributed via VS Code Marketplace, not shipped in AAP RPMs or containers. The vulnerable code does not exist in any AAP-shipped artifact. Red Hat severity: Moderate — CVSS 6.6 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L). Weakness: CWE-22. Red Hat lists Red Hat Ansible Automation Platform 2 as not affected.
Medium [CVE-2026-65602] Information disclosure and integrity bypass via IngressRouteTCP cross-provider reference
Traefik 3.6.0 through 3.6.22 and 3.7.0 through 3.7.6 fail to enforce the crossProviderNamespaces allowlist for IngressRouteTCP service serversTransport references (the allowlist was only enforced for HTTP serversTransport references). A low-privileged Kubernetes user in a namespace not listed in crossProviderNamespaces can set serversTransport: foo@file on an IngressRouteTCP service, causing Traefik to accept the forbidden cross-provider reference and use a file-provider TCPServersTransport — including privileged backend mTLS client certificates, SPIFFE identity, or PROXY-protocol settings. This is fixed in 3.6.23 and 3.7.7. Red Hat OpenShift Dev Spaces ships a version of traefik affected by this vulnerability. Exploitation requires specific Kubernetes RBAC permissions and a crossProviderNamespaces configuration with cross-provider TCPServersTransport resources. Red Hat severity: Moderate — CVSS 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N). Weakness: CWE-863. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2020-10698 +1] websocket EventConsumer missing authorization for inventory_update_events, project_update_events, and system_job_events allows cross-organization stdout disclosure
A flaw was found in AWX. The websocket event consumer performs RBAC authorization checks only for event groups that are mapped in the consumer_access() function (job_events, workflow_events, ad_hoc_command_events). Three event groups - inventory_update_events, project_update_events, and system_job_events — are not mapped, causing the authorization check to be skipped. Any authenticated user can subscribe to these unmapped websocket event groups for any object ID and receive real-time stdout output from jobs belonging to organizations they have no access to. This is an incomplete remediation of CVE-2020-10698. This flaw affects all versions of Ansible Automation Platform that ship the Controller component (formerly Ansible Tower). Exploitation requires a valid authenticated user account on the AWX/Controller instance, but no specific role or organization membership is needed. The attacker receives stdout and event metadata in real time for inventory updates, project updates, and system jobs across all organizations. In multi-tenant deployments (including managed services), this allows one tenant's users to observe another tenant's job output. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-862. Affected Red Hat products: Red Hat Ansible Automation Platform 2. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-16473] heap out-of-bounds read via crafted sbc audio frame
A flaw was found in the sbc library (BlueZ SBC codec). An off-by-one error in the SBC frame decoder allows a crafted audio payload to trigger a one-byte heap out-of-bounds read. This could allow an adjacent attacker streaming Bluetooth audio to read a single byte of adjacent heap memory. Red Hat severity: Moderate — CVSS 4.3 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N). Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: sbc.
Medium [CVE-2026-10723] Incorrect acceptance of NSEC3 records
BIND may accept incorrect child-zone NSEC3 records as valid, which could allow an attacker to forge authenticated NXDOMAIN responses. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1. Exploitation requires high attack complexity, limiting the immediate risk to Red Hat products. Red Hat severity: Moderate — CVSS 6.8 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N). Weakness: CWE-345. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat OpenShift Container Platform 4.16; Red Hat OpenShift Container Platform 4.18; Red Hat OpenShift Container Platform 4.22; Red Hat Hardened Images; Red Hat Enterprise Linux 6; Red Hat OpenShift Container Platform 4. Red Hat lists Red Hat Enterprise Linux 9 as not affected. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:55437, RHSA-2026:60383, RHSA-2026:54509, RHSA-2026:54654, RHSA-2026:54510, RHSA-2026:55442, RHSA-2026:57189, RHSA-2026:55441, RHSA-2026:62549, RHSA-2026:65851, RHSA-2026:60440, RHSA-2026:54071.
Medium [CVE-2026-10822] Key Record using PRIVATEDNS algorithm may lead to exit
If BIND encounters a particular invalid data structure in a DNS record, it will accept the invalid data, and may subsequently abort and exit. BIND will first need to store a DNS record for a key (KEY, DNSKEY, etc.). That key must specify a PRIVATEDNS algorithm (253), and in the algorithm identifier, improperly give a length longer than the actual identifier data. If BIND later needs to render that record to text, it will use the invalid length during processing, leading to a consistency check failing. This Moderate impact flaw in BIND allows a specially crafted DNS key record with a PRIVATEDNS algorithm and overlong algorithm identifier to cause the named daemon to abort when rendering the record to text. The attack requires prior storage of the malformed record (requiring user interaction), limiting the immediate risk to most Red Hat deployments. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-617. Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4. Red Hat fixing advisory: RHSA-2026:54071. Affected products named by the advisory: Red Hat package: bind9.16; Red Hat package: bind9.18; Red Hat package: dhcp.
Medium [CVE-2026-16566] jenkins_credential module returns generated API token in plaintext output
A flaw was found in the community.general Ansible collection's jenkins_credential module. When creating a Jenkins API token (credential_type: token), the module correctly protects the input password with no_log=True in the argument specification, but places the generated API token returned by the Jenkins API directly into the Ansible task result dictionary without output suppression. The token is emitted in plaintext via exit_json(), causing it to appear in Ansible task output, AWX/Tower/AAP Controller job logs, callback plugin output, CI/CD pipeline logs, and fact caching backends. An attacker with access to any of these output channels can obtain the Jenkins API token and gain the same privileges as the user who created it. Red Hat severity: Moderate — CVSS 6.1 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N). Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected.
Medium [CVE-2026-47143] Denial of Service vulnerability via crafted input
Capstone is a disassembly framework. Versions prior to 6.0.0-Alpha8 and 5.0.8 have a NULL pointer dereference in `modRMRequired()` and `decode()` when disassembling 3DNow! opcodes (`0F 0F`) in builds compiled with `-DCAPSTONE_X86_REDUCE`, allowing a remote attacker to crash any application using the reduced X86 Capstone library by supplying a crafted input containing the 4-byte sequence `0F 0F `. This vulnerability only affects builds compiled with the -DCAPSTONE_X86_REDUCE flag; standard full builds are not vulnerable. Red Hat severity: Moderate — CVSS 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-476. Affected Red Hat products: Red Hat Hardened Images. Red Hat fixing advisory: RHSA-2026:43841.
Medium [CVE-2026-46917] Improve DTLS handshaking (Oracle CPU 2026-07)
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). A flaw was found in OpenJDK. The DTLS implementation is open to two different DoS attacks. Red Hat severity: Moderate — CVSS 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). Weakness: CWE-400. Affected products named by the advisory: OPENJDK ELS 11.0.32; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 16 more.
Medium [CVE-2026-47021] Enhance XBM image support (Oracle CPU 2026-07)
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: 2D). Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). A flaw was found in OpenJDK. The regex defined in XbmImageDecoder (matchRegex) is vulnerable to a DoS attack when the input contains a long string without a closing character; due to excessive backtracking. Red Hat severity: Moderate — CVSS 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). Weakness: CWE-1333. Affected products named by the advisory: OPENJDK ELS 11.0.32; Red Hat Build of OpenJDK 17.0.20; Red Hat Build of OpenJDK 21.0.12; Red Hat Build of OpenJDK 25.0.4; and 21 more.
Medium [CVE-2026-47027] Enhance Jar file processing (Oracle CPU 2026-07)
Vulnerability in Oracle Java SE (component: Libraries). Supported versions that are affected are Oracle Java SE: 8u491, 8u491-perf, 11.0.31, 17.0.19, 21.0.11, 25.0.3, 26.0.1; Oracle GraalVM for JDK: 17.0.19 and 21.0.11; Oracle GraalVM Enterprise Edition: 21.3.18. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Java SE. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). A flaw was found in OpenJDK. The processImpl() method in SignatureFileVerifier exhibits O(n^2) time complexity when verifying JAR files where different entries have different signer combinations, potentially leading to DoS. Red Hat severity: Moderate — CVSS 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
Medium [CVE-2026-60147] Improve certification checking (Oracle CPU 2026-07)
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Security). Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N). A flaw was found in OpenJDK. OpenJDK can apply two different security meanings to the same wildcard dNSName SAN across certificate policy enforcement and hostname verification. During path validation, DNSName.constrains compares *.foo.com and secret.foo.com literally and returns NAME_SAME_TYPE, so NameConstraintsExtension.verify does not reject the chain when secret.foo.com is an exact-host exclusion. Later, HostnameChecker interprets the same SAN as a wildcard template and accepts secret.foo.com for *.foo.com. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N). Weakness: CWE-295.
Medium [CVE-2026-12548] heap out-of-bounds read in libsoup due to integer truncation
A heap out-of-bounds read flaw was found in libsoup. When parsing multipart HTTP messages, an integer type mismatch between the caller and soup_headers_parse() can cause the length parameter to be incorrectly truncated, leading to a heap buffer over-read. A remote attacker could use this flaw to crash an application using libsoup or potentially disclose heap memory contents. Red Hat severity: Moderate — CVSS 4.2 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L). Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 10. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: libsoup3.
Medium [CVE-2026-16441] Incorrect method delegation can lead to integrity issues
Incorrect method delegation can lead to integrity issues. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-843. Red Hat lists fixing advisory RHSA-2026:52949 with package java-1.8.0-ibm-1:1.8.0.8.70-1.el8_10, java-21-ibm-semeru-certified-jdk-1:21.0.12.0.8-2.el10_2, java-21-ibm-semeru-certified-jdk-1:21.0.12.0.8-1.el10_0. Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 10.
Medium [CVE-2026-16243] Denial of service via improper input validation in arraycmp SIMD
Denial of service via improper input validation in arraycmp SIMD. Red Hat rates this moderate (CVSS 4.8). Weakness: CWE-1284. Red Hat lists fixing advisory RHSA-2026:52949 with package java-1.8.0-ibm-1:1.8.0.8.70-1.el8_10, java-21-ibm-semeru-certified-jdk-1:21.0.12.0.8-2.el10_2, java-21-ibm-semeru-certified-jdk-1:21.0.12.0.8-1.el10_0. Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 10.