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Red Hat Linux Security Advisories & Vulnerabilities

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Latest Red Hat advisories

High8.8Red Hat

High [CVE-2026-12439] Use after free in Digital Credentials

Use after free in Digital Credentials in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Critical) An use after free flaw was found in the Digital Credentials component of the Chromium browser. Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-825.

CVE-2026-12439
Unclassified
Jun 17, 2026
High8.3Red Hat

High [CVE-2026-12437] Use after free in WebShare

Use after free in WebShare in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical) Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 8.3 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H). Weakness: CWE-825.

CVE-2026-12437
Unclassified
Jun 17, 2026
High7.5Red Hat

High [CVE-2026-50559] Authorization bypass in HTTP path-based policies via encoded characters

Quarkus is a Java framework for building cloud-native applications. Prior to versions 3.37.0, 3.36.3, 3.33.2.1, 3.33.3, 3.27.4.1, 3.27.5, and 3.20.6.2, Quarkus HTTP path-based authorization policies can be bypassed using encoded semicolons (%3B) to smuggle matrix parameters past the security layer, and using encoded slashes (%2F) or backslashes (%5C) to access protected static resources. This is a distinct issue from CVE-2026-39852, which addressed only literal semicolon stripping. Versions 3.37.0, 3.36.3, 3.33.2.1, 3.33.3, 3.27.4.1, 3.27.5, and 3.20.6.2 contain a patch. A flaw was found in Quarkus. This could allow unauthorized access to protected static resources, leading to information disclosure. This is critical in deployments where Quarkus applications serve sensitive static content and rely solely on path-based authorization. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-551. Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat Build of Apache Camel 3.33.2.SP1; Red Hat build of Quarkus 3.20.6.SP2; Red Hat build of Quarkus 3.27.4.SP1; and 11 more.

CVE-2026-50559
Unclassified
Jun 17, 2026
High8.0Red Hat

High [CVE-2026-55225] Cross-namespace privilege escalation via Kafka.spec.entityOperator.watchedNamespace in Strimzi

Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or OpenShift in various deployment configurations. In Strimzi 1.0.0 and earlier, an attacker who can create a Kafka custom resource can set Kafka.spec.entityOperator watchedNamespace to a target namespace, causing the Cluster Operator to create a Role with full Secret CRUD permissions there and bind it to the Entity Operator ServiceAccount in the attacker's namespace. The attacker can mint a token for that ServiceAccount and read or write Secrets in any target namespace where the Cluster Operator has been granted permissions, regardless of STRIMZI_NAMESPACE. This issue is fixed in versions 1.0.1 and 1.1.0. When the Strimzi cluster operator is deployed with watchAnyNamespace=true (or a multi-namespace list), any namespace editor can set Kafka.spec.entityOperator.userOperator.watchedNamespace (or topicOperator.watchedNamespace) to an arbitrary namespace. The cluster operator then creates a Role granting full CRUD on Secrets in the target namespace and a RoleBinding pointing to a ServiceAccount in the attacker's namespace — effectively granting cluster-admin-equivalent access via kube-system secret exfiltration. The RBAC objects created cross-namespace have their ownerReferences deliberately stripped, making the privilege grant persistent even after the Kafka CR or attacker namespace is deleted.

CVE-2026-55225
Unclassified
Jun 17, 2026
Medium5.3Red Hat

Medium [CVE-2026-48990] Resource exhaustion via oversized JSON Web Signature (JWS) payloads

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. In versions 1.3.4 through 1.6.5, joserfc accepts oversized RFC7797 b64=false JWS payloads without applying JWSRegistry.max_payload_length, which can lead to resource exhaustion. The normal JWS compact and flattened JSON paths reject payloads above the configured payload-size limit with ExceededSizeError. The RFC7797 unencoded payload paths do not make the same check. A valid b64=false compact or flattened JSON JWS can therefore deserialize successfully with a payload larger than JWSRegistry.max_payload_length. Applications that accept lower-trust JWS values and rely on joserfc to reject oversized token content during verification have a moderate availability risk. This issue has been fixed in version 1.6.7. This vulnerability allows a remote attacker to cause resource exhaustion, leading to a Denial of Service (DoS), by sending oversized JSON Web Signature (JWS) payloads. The library fails to apply size limits, specifically JWSRegistry.max_payload_length, when processing RFC7797 b64=false JWS payloads. Affected products named by the advisory: Red Hat Ansible Automation Platform 2.6; Red Hat Ansible Automation Platform 2.7; Red Hat Hardened Images; Red Hat Migration Toolkit for Applications 8.2.

CVE-2026-48990
Unclassified
Jun 17, 2026
Medium5.9Red Hat

Medium [CVE-2026-55199] Denial of Service via crafted SSH_MSG_EXT_INFO message

libssh2 through 1.11.1, fixed in commit 1762685, contains a pre-authentication denial of service vulnerability in the SSH_MSG_EXT_INFO handler in src/packet.c that allows a malicious SSH server to cause a client CPU exhaustion loop by sending a crafted extension count value. A malicious server can set nr_extensions to 0xFFFFFFFF during key exchange, causing the client to spin in a tight CPU loop for over 60 seconds because return values from _libssh2_get_string() are unchecked and the session timeout does not apply to CPU-bound loops. A vulnerability in libssh2 allows a malicious SSH server to freeze connected clients during the handshake process. By triggering an infinite CPU loop during the initial connection handshake, the server can render the client unresponsive. Note: Red Hat Enterprise Linux (RHEL) 8 and newer are not affected by this flaw, as they do not ship the libssh2 package. 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-606. Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2026:29950. Affected products named by the advisory: Red Hat package: libssh2.

CVE-2026-55199
Red Hat Enterprise Linux
Jun 17, 2026
Medium5.9Red Hat

Medium [CVE-2026-9678] Information disclosure due to improper cache-control header parsing

Impact: Undici's cache interceptor incorrectly classifies some responses as cacheable when the upstream Cache-Control header uses whitespace-padded qualified private or no-cache field names such as private=" authorization" or no-cache="\tauthorization". The parser preserves the surrounding whitespace, so later comparisons against the literal authorization field name fail and the response is stored. In shared-cache mode, this allows a response containing one user's authenticated data to be served from cache to a subsequent caller, including an unauthenticated caller, when both requests resolve to the same cache key. Affected applications are those that explicitly enable the cache interceptor (interceptors.cache()) in shared mode, forward Authorization headers upstream, and receive cacheable responses with non-canonical qualified private or no-cache directives. Patches: Upgrade to undici v7.28.0 or v8.5.0. Workarounds: If upgrade is not immediately possible, disable shared-cache mode for traffic that includes Authorization headers, avoid caching responses to authenticated requests, or add Vary: Authorization upstream. A flaw was found in Undici. This vulnerability allows an unauthenticated attacker to access authenticated user data from the cache, leading to information disclosure.

CVE-2026-9678
Red Hat Enterprise Linux
Jun 17, 2026
Medium5.9Red Hat

Medium [CVE-2026-9675] undici WebSocket client vulnerable to denial of service via cumulative fragment bypass

Impact: The undici WebSocket client enforces maxPayloadSize per-frame but does not enforce the cumulative size of fragmented uncompressed messages. A malicious WebSocket server can stream many small fragments that each pass per-frame validation but collectively exceed the configured limit, causing unbounded memory growth in the client process. The result is memory exhaustion and a denial of service. Affected applications are those using the undici WebSocket client (new WebSocket(...)) that can be induced to connect to an attacker-controlled or compromised WebSocket endpoint. This is a regression specific to undici 8.1.0. The 6.25.0 line shipped the equivalent cumulative check from the start and is unaffected. The 7.x line never had the maxPayloadSize feature and is also unaffected. Patches: Upgrade to undici >= 8.5.0. Workarounds: No workaround is available. The fix must be applied through an upgrade. A flaw was found in undici. A malicious WebSocket server could exploit this vulnerability by sending fragmented messages that individually meet size limits but collectively exceed them. This is rated Moderate by Red Hat (CVSS 5.9) because successful exploitation requires the undici WebSocket client to connect to an attacker-controlled server (AC:H), which is unlikely in typical Red Hat product deployments where WebSocket endpoints are trusted internal services.

CVE-2026-9675
Unclassified
Jun 17, 2026
Medium4.3Red Hat

Medium [CVE-2026-12515] missing repository authorization in content_uploads exposes cross-product content existence

A flaw was found in Katello's of Red Hat Satellite. A content upload functionality where insufficient authorization checks in the ContentUploadsController allowed users with the edit_products permission to query content information for repositories outside the products they were authorized to manage. An authenticated attacker could exploit this issue to determine whether specific content exists within repositories that should otherwise be inaccessible. This issue does not allow unauthorized modification, import, or publication of content. Affected products named by the advisory: Red Hat Satellite 6.16 for RHEL 8; Red Hat Satellite 6.16 for RHEL 9; Red Hat Satellite 6.17 for RHEL 9; Red Hat Satellite 6.18 for RHEL 9; and 2 more. Affected products named by the advisory: Red Hat Satellite 6.19 for RHEL 9.

CVE-2026-12515
Unclassified
Jun 17, 2026
Medium5.4Vendor: LowRed Hat

Medium [CVE-2026-12528] 389-ds-base: 389-ds-base: heap-buffer-overflows in __aclp__normalize_acltxt

A flaw was found in 389 Directory Server in the __aclp__normalize_acltxt() function of aclparse.c. A malformed ACI (Access Control Instruction) string can trigger heap-buffer-overflow writes and reads during ACI parsing. The function fails to validate that the ACI keyword has sufficient length after whitespace stripping, leading to a 1-byte out-of-bounds write and subsequent out-of-bounds reads. An authenticated user with write access to the aci attribute could send a crafted ACI value to silently corrupt heap memory in the directory server process. This flaw in 389 Directory Server has a Low impact. While modern Red Hat Directory Server configurations typically limit write access to the `aci` attribute to the Directory Manager, certain older deployments or custom ACI patterns could allow other authenticated users to introduce the malformed string. The resulting 1-byte heap corruption is silent in production builds and is not considered weaponizable for code execution. Red Hat severity: Low — CVSS 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L). Weakness: CWE-787. 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.

CVE-2026-12528
Red Hat Enterprise Linux
Jun 17, 2026
Medium4.8Red Hat

Medium [CVE-2026-48142] Memory disclosure or denial of service via ngx_http_charset_module heap buffer over-read

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When content is served or proxied through a location block with both source_charset utf-8; and a charset directive (for example, charset koi8-r;) configured, remote, unauthenticated attackers can send requests (in conjunction with conditions beyond their control) to cause a heap buffer over-read in the NGINX worker process, leading to limited disclosure of memory or a restart. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated. A flaw was found in NGINX. Remote, unauthenticated attackers can exploit a vulnerability in the `ngx_http_charset_module` when specific charset configurations are present. Red Hat severity: Moderate — CVSS 4.8 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L). Weakness: CWE-125. Affected Red Hat products: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat fixing advisory: RHSA-2026:27197. Affected products named by the advisory: Red Hat package: nginx.

CVE-2026-48142
Web Servers & Proxies
Jun 17, 2026
Low3.7Red Hat

Low [CVE-2026-11525] Weakening of cookie SameSite policy due to incorrect parsing of Set-Cookie header

Impact: When undici parses a Set-Cookie header, it accepts any SameSite attribute value that contains Strict, Lax, or None as a substring, rather than the case-insensitive exact match specified by RFC 6265. Non-spec values are silently mapped to one of the three standard tokens. For example, SameSite=NoneOfYourBusiness is parsed as None (the most permissive setting), and SameSite=StrictLax is parsed as Lax (a downgrade from Strict). Affected applications are those that consume Set-Cookie headers from server responses (for example via undici's fetch or proxy code paths) and then forward or rely on the parsed sameSite attribute. A malicious or non-compliant server can coerce the consumer's view of a cookie's SameSite policy to a weaker value, silently degrading the SameSite enforcement the cookie is supposed to provide. This was introduced in undici 5.15.0 when the cookies feature was added. Patches: Upgrade to undici v6.26.0, v7.28.0 or v8.5.0. When undici processes Set-Cookie headers, it incorrectly interprets the SameSite attribute, accepting partial matches instead of exact ones. This allows a malicious server to downgrade a cookie's SameSite policy to a less secure setting, potentially leading to unintended information disclosure or a weakening of security protections for the user.

CVE-2026-11525
Red Hat Enterprise Linux
Jun 17, 2026
Low3.7Red Hat

Low [CVE-2026-6733] Response queue poisoning on reused keep-alive sockets can lead to incorrect response delivery.

Impact: Undici's HTTP/1.1 client is vulnerable to response queue poisoning on reused keep-alive sockets. An attacker-controlled upstream server can inject an unsolicited HTTP/1.1 response onto an idle socket after a request completes. When the client dispatches the next request on that socket, it associates the injected response with the new request, causing responses to be delivered to the wrong requests. This requires an attacker-controlled or compromised upstream HTTP/1.1 server and keep-alive connection reuse. Patches: Upgrade to undici v6.26.0, v7.28.0 or v8.5.0. Workarounds: Disable keep-alive connection reuse by setting keepAliveTimeout: 0 on the Client or Pool. A flaw was found in undici. This could result in a low impact on data integrity. This can lead to incorrect response delivery, potentially impacting data integrity, but requires a compromised server and active keep-alive connections. Red Hat severity: Low — CVSS 3.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N). Weakness: CWE-940. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images; and 13 more.

CVE-2026-6733
Red Hat Enterprise Linux
Jun 17, 2026
High7.5Red Hat

High [CVE-2026-48779] Denial of Service via memory exhaustion from small WebSocket fragments

ws is an open source WebSocket client and server for Node.js. All versions from 1.1.0 up to (but not including) 5.2.5, from 6.0.0 up to 6.2.4, from 7.0.0 up to 7.5.11, and from 8.0.0 up to 8.21.0 are affected by a memory exhaustion DoS vulnerability. A peer can send a high volume of exceptionally small fragments and data chunks, with modest network traffic, to force the remote peer into allocating and holding structural wrappers that consume far more memory than the default documented message-size limit, leading to process termination due to OOM. This issue has been fixed in versions 5.2.5, 6.2.4, 7.5.11, and 8.21.0. This action forces the affected component to allocate and hold structural wrappers that consume excessive memory. Consequently, this leads to process termination and a denial of service (DoS) for the remote peer. This is an Important denial of service vulnerability in the `ws` WebSocket library. This can result in service disruption for Red Hat products that utilize `ws` for WebSocket communication. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-1050. Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat AMQ Broker 7.13.6; Red Hat AMQ Broker 7.14.1; Red Hat Enterprise Linux 10; and 35 more.

CVE-2026-48779
Red Hat Enterprise Linux
Jun 16, 2026
High8.2Red Hat

High [CVE-2026-42089] Arbitrary code execution via unconfirmed package installation

Yeoman Environment provides an API to discover, create, and run generators, and to configure where and how a generator is resolved. Versions 2.9.0 through 6.0.0 install missing local generator packages from caller-supplied package names without user confirmation. In downstream consumers that pass attacker-controlled project configuration into this path, this can result in arbitrary package installation and code execution during CLI bootstrap. The vulnerable method is installLocalGenerators(), which calls repository.install() directly without prompting the user. This issue has been fixed in version 6.0.0. This vulnerability allows an attacker to install arbitrary packages and execute code during command-line interface (CLI) bootstrap. The primary impact is arbitrary code execution. This is an Important flaw in Yeoman Environment that could lead to arbitrary code execution. The vulnerability arises when downstream consumers process attacker-controlled project configurations, allowing the installation of unconfirmed local generator packages during CLI bootstrap. Exploitation requires user interaction with malicious input, limiting the attack vector to specific development workflows. Red Hat severity: Important — CVSS 8.2 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H). Weakness: CWE-426.

CVE-2026-42089
Unclassified
Jun 16, 2026
High8.8Red Hat

High [CVE-2026-44932] Arbitrary code execution via unsanitized DHCP replies

Passing of unsanitized strings from DHCP replies into the wicked dhcp client before wicked 0.6.79 could be used by attackers operating a malicious DHCP server to execute code on the local machine. A remote attacker, by operating a malicious Dynamic Host Configuration Protocol (DHCP) server, could send specially crafted DHCP replies containing unsanitized strings. This vulnerability allows the attacker to execute arbitrary code on the local machine, potentially leading to a complete compromise of the affected system. This Important vulnerability in the wicked DHCP client allows a remote attacker to achieve arbitrary code execution on a system configured to obtain an IP address from a malicious DHCP server. By sending specially crafted DHCP replies, an attacker can exploit unsanitized strings, leading to a complete compromise of the affected system. This risk is primarily present in environments where systems are exposed to untrusted DHCP servers. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-94.

CVE-2026-44932
Unclassified
Jun 16, 2026
High7.5Vendor: MediumRed Hat

High [CVE-2026-12398] Galaxy_ng: shell injection in legacy role import via unsanitized git ref names

A command injection vulnerability was found in galaxy_ng. The do_git_checkout() function in the legacy role import API (v1) interpolates unsanitized git ref names (branch/tag names) into shell commands executed via subprocess.run() with shell=True. An authenticated user who controls a git repository can create a branch or tag with shell metacharacters in the name to achieve remote code execution on the pulp worker. The vulnerable endpoint is only reachable when GALAXY_ENABLE_LEGACY_ROLES is set to True, which is not the default configuration. Red Hat Ansible Automation Platform ships galaxy_ng with GALAXY_ENABLE_LEGACY_ROLES set to False by default in all supported versions (2.4, 2.5, 2.6). When this setting is False, the vulnerable v1 API endpoint is not registered and returns a 404 response, making the vulnerability unreachable. Standard AAP deployments are not affected. Customers who have explicitly enabled legacy role support (GALAXY_ENABLE_LEGACY_ROLES=True) should apply the mitigation steps above until a fix is available. Red Hat severity: Moderate — CVSS 7.5 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-78. Affected Red Hat products: Red Hat Ansible Automation Platform 2. Red Hat does not currently list a fixing RHSA for this CVE.

CVE-2026-12398
Unclassified
Jun 16, 2026
High7.5Red Hat

High [CVE-2026-12329] Memory safety bug fixed in Thunderbird ESR 140.12

Memory safety bug fixed in Thunderbird ESR 140.12. This vulnerability was fixed in Firefox ESR 140.12 and Thunderbird 140.12. Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H). Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.8 Telecommunications Update Service; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Affected products named by the advisory: Red Hat package: firefox; Red Hat package: thunderbird.

CVE-2026-12329
Red Hat Enterprise Linux
Jun 16, 2026
High7.5Red Hat

High [CVE-2026-12328] Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152

Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-825. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.8 Telecommunications Update Service; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.

CVE-2026-12328
Red Hat Enterprise Linux
Jun 16, 2026
High7.5Red Hat

High [CVE-2026-12326] Memory safety bugs fixed in Firefox 152 and Thunderbird 152

Memory safety bugs present in Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152 and Thunderbird 152. Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-825. Red Hat lists 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 as not affected.

CVE-2026-12326
Unclassified
Jun 16, 2026

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