Red Hat Linux Security Advisories & Vulnerabilities
16004 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited sources checked less often
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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
High [CVE-2026-44420] Arbitrary code execution and denial of service via heap-buffer-overflow
Arbitrary code execution and denial of service via heap-buffer-overflow. Red Hat rates this important (CVSS 8.8). Weakness: CWE-131. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
High [CVE-2026-44422] Arbitrary code execution or denial of service via heap use-after-free in RDPEAR NDR parser
Arbitrary code execution or denial of service via heap use-after-free in RDPEAR NDR parser. Red Hat rates this important (CVSS 7.5). Weakness: CWE-825. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; and 1 more.
High [CVE-2026-44421] Arbitrary code execution via crafted RDPGFX PDUs
Arbitrary code execution via crafted RDPGFX PDUs. Red Hat rates this important (CVSS 8.8). Weakness: CWE-787. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
High [CVE-2026-11800] org.keycloak:keycloak-services: Keycloak: Authentication bypass via JWT algorithm confusion
org.keycloak:keycloak-services: Keycloak: Authentication bypass via JWT algorithm confusion. Red Hat rates this important (CVSS 8.1). Weakness: CWE-347. Affected package(s): rhbk/keycloak-rhel9:26.6, rhbk/keycloak-operator-bundle:26.6.4, rhbk/keycloak-rhel9-operator:26.6. Resolved in Red Hat advisory RHSA-2026:30083 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat build of Keycloak 26.6.
Medium [CVE-2026-45149] Denial of Service due to excessive memory allocation when expanding large numeric ranges
Denial of Service due to excessive memory allocation when expanding large numeric ranges. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-770. Affected package(s): nodejs20-main, rust-main, llvm21-main, nodejs26-main, nodejs25-main, yarnpkg-main. Resolved in Red Hat advisory RHSA-2026:22380 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-10052] Quay/config-tool: quay/config-tool: ssrf via unfiltered ldap and smtp config validation endpoints
A flaw was found in the Quay config-tool's LDAP and SMTP validation functions. An attacker with config editor access can exploit these functions, which make outbound connections to user-supplied endpoints without proper IP or host filtering. This allows the attacker to perform internal network reconnaissance from the Quay pod's network position, potentially mapping the internal network infrastructure. Red Hat severity: Low — CVSS 4.1 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N). Weakness: CWE-918. Affected Red Hat products: Red Hat Quay 3. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-6324] Libsoup: libsoup: http request smuggling via unsigned to signed conversion error
A flaw was found in libsoup. A remote attacker could exploit an unsigned to signed conversion error in the `soup_body_input_stream_read_chunked()` function by sending a malicious HTTP request. This vulnerability occurs when libsoup operates behind a non-libsoup proxy server or as a proxy in front of a non-libsoup backend server. Successful exploitation can allow an attacker to bypass security controls, poison web caches, or gain unauthorized access. This vulnerability is rated Moderate due to the specialized network architecture and HTTP keep-alive connection reuse required to facilitate request smuggling. In standard Red Hat deployments, libsoup is primarily utilized as a client-side HTTP library by desktop and system utilities rather than as a public-facing server or reverse proxy. Successful exploitation requires an atypical topology where a libsoup-based service processes pipelined requests behind or in front of an external proxy server with differing chunk-parsing logic. Red Hat severity: Moderate — CVSS 4.8 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N). Weakness: CWE-444. Under investigation: 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.
Critical [CVE-2026-41565] Stack buffer overflow allows arbitrary code execution via a crafted authentication tag.
Stack buffer overflow allows arbitrary code execution via a crafted authentication tag.. Red Hat rates this important (CVSS 9.8). Weakness: CWE-120. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-45292] Denial of Service due to unbounded memory allocation when parsing oversized baggage
Denial of Service due to unbounded memory allocation when parsing oversized baggage. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected package(s): offline-knowledge-portal/rhokp-rhel9:1782239370. Resolved in Red Hat advisory RHSA-2026:28573 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Offline Knowledge Portal 1.2.7; Red Hat OpenShift Dev Spaces 3.29; OpenShift Serverless; Red Hat OpenShift AI (RHOAI); and 13 more.
High [CVE-2026-44477] Metrics exporter allows privilege escalation to PostgreSQL superuser and OS RCE
Metrics exporter allows privilege escalation to PostgreSQL superuser and OS RCE. Red Hat rates this important (CVSS 8.8). Weakness: CWE-250. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Openshift Data Foundation 4.
High [CVE-2026-48526] Authentication bypass due to forged JSON Web Tokens
Authentication bypass due to forged JSON Web Tokens. Red Hat rates this important (CVSS 7.4). Weakness: CWE-347. Affected package(s): ansible-automation-platform, quay/quay-rhel8:1782487717, python3.12-pyjwt, quay/quay-rhel8:1781878070, fence-agents, quay/quay-rhel8:1781937357. Resolved in Red Hat advisory RHSA-2026:35837 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.6 for RHEL 9; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; and 26 more.
High [CVE-2026-9804] VMExport directory symlink escape enables exporter pod file read
VMExport directory symlink escape enables exporter pod file read. Red Hat rates this important (CVSS 7.7). Weakness: CWE-59. Affected package(s): container-native-virtualization/virt-exportserver-rhel9:1781757410, container-native-virtualization/virt-exportserver-rhel9:1781590993, container-native-virtualization/virt-exportserver-rhel9:1781928221, container-native-virtualization/virt-exportserver-rhel9:1782012918, container-native-virtualization/virt-exportserver-rhel9:1781838712. Resolved in Red Hat advisory RHSA-2026:28002 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Container Native Virtualization 4.17; Red Hat Container Native Virtualization 4.18; Red Hat Container Native Virtualization 4.19; Red Hat Container Native Virtualization 4.20; and 2 more.
High [CVE-2026-44604] Command injection in rpmuncompress doUntar() via unescaped archive top-level directory name in popen() shell command
Command injection in rpmuncompress doUntar() via unescaped archive top-level directory name in popen() shell command. Red Hat rates this moderate (CVSS 7). Weakness: CWE-78. Affected package(s): rpm-main. Resolved in Red Hat advisory RHSA-2026:28491 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat Hardened Images.
High [CVE-2026-9795] Privilege escalation via improper scope mapping enforcement
Privilege escalation via improper scope mapping enforcement. Red Hat rates this important (CVSS 7.3). Weakness: CWE-266. Affected package(s): rhbk/keycloak-operator-bundle:26.4.13, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9:26.6, rhbk/keycloak-rhel9:26.4, rhbk/keycloak-operator-bundle:26.6.4. Resolved in Red Hat advisory RHSA-2026:30049 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat build of Keycloak 26.4; Red Hat build of Keycloak 26.6.
High [CVE-2026-46116] defensively unhash xfrm_state lists in __xfrm_state_delete
defensively unhash xfrm_state lists in __xfrm_state_delete. Red Hat rates this important (CVSS 7). Weakness: CWE-763. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; and 7 more.
High [CVE-2026-46181] Fix mis-use of RCU in mlx4_srq_event()
Fix mis-use of RCU in mlx4_srq_event(). Red Hat rates this important (CVSS 7). Weakness: CWE-366. Affected package(s): kernel-rt, kernel. Resolved in Red Hat advisory RHSA-2026:25120 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 7 Extended Lifecycle 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; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 6 more.
High [CVE-2026-46152] drop stray 'static' from fast-RX rx_result
drop stray 'static' from fast-RX rx_result. Red Hat rates this important (CVSS 7). Weakness: CWE-1058. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:27288 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream E4S (v.9.4); Red Hat Enterprise Linux AppStream EUS (v.9.6); Red Hat Enterprise Linux AppStream (v. 9); and 23 more.
High [CVE-2026-46227] revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL
revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL. Red Hat rates this important (CVSS 7). Weakness: CWE-367. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:34094 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: 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; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 6 more.
High [CVE-2026-46117] Remove user triggerable WARN_ON() in mana_ib_create_qp_rss()
Remove user triggerable WARN_ON() in mana_ib_create_qp_rss(). Red Hat rates this important (CVSS 7). Weakness: CWE-1288. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:30129 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.
High [CVE-2026-46145] Validate rx_hash_key_len
Validate rx_hash_key_len. Red Hat rates this important (CVSS 7). Weakness: CWE-787. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:27354 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support.
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