Red Hat Linux Security Advisories & Vulnerabilities
16039 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited sources checked less often
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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, so keep the system patched. This is the release's advisory history, not a per-package scan.
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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
Medium [CVE-2026-34481] Denial of Service via invalid JSON output
Denial of Service via invalid JSON output. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-241. Affected package(s): log4j-layout-template-json, offline-knowledge-portal/rhokp-rhel9:1779996999. Resolved in Red Hat advisory RHSA-2026:22619 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-34480] Invalid XML output causes denial of service in logging
Invalid XML output causes denial of service in logging. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-168. Affected package(s): log4j-core-test, offline-knowledge-portal/rhokp-rhel9:1779996999, log4j-core. Resolved in Red Hat advisory RHSA-2026:22619 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-34479] Apache Log4j 1-to-Log4j 2 bridge: Log processing denial of service due to improper XML escaping
Apache Log4j 1-to-Log4j 2 bridge: Log processing denial of service due to improper XML escaping. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-91. Affected package(s): offline-knowledge-portal/rhokp-rhel9:1779996999. Resolved in Red Hat advisory RHSA-2026:21773 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-34478] Log injection via CRLF sequences due to configuration attribute renames
Log injection via CRLF sequences due to configuration attribute renames. Red Hat rates this moderate (CVSS 5.8). Weakness: CWE-93. Affected package(s): log4j-core-test, offline-knowledge-portal/rhokp-rhel9:1779996999, log4j-core. Resolved in Red Hat advisory RHSA-2026:22619 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-34477] Man-in-the-middle attack due to incomplete hostname verification
Man-in-the-middle attack due to incomplete hostname verification. Red Hat rates this moderate (CVSS 6.8). Weakness: CWE-295. Affected package(s): offline-knowledge-portal/rhokp-rhel9:1779996999. Resolved in Red Hat advisory RHSA-2026:21773 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-40227] Denial of Service via malicious IPC API call with null element
Denial of Service via malicious IPC API call with null element. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-476. Affected package(s): systemd-main. Resolved in Red Hat advisory RHSA-2026:7299 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-40226] systemd nspawn: Escape-to-host action via crafted config file
systemd nspawn: Escape-to-host action via crafted config file. Red Hat rates this moderate (CVSS 6.4). Weakness: CWE-348. Affected package(s): systemd-main. Resolved in Red Hat advisory RHSA-2026:7299 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-40225] udev in systemd: Privilege escalation via malicious hardware devices and unsanitized kernel output
udev in systemd: Privilege escalation via malicious hardware devices and unsanitized kernel output. Red Hat rates this moderate (CVSS 6.4). Weakness: CWE-250. Affected package(s): systemd-main. Resolved in Red Hat advisory RHSA-2026:7299 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-40224] Local privilege escalation via varlink
Local privilege escalation via varlink. Red Hat rates this moderate (CVSS 6.7). Weakness: CWE-266. Affected package(s): systemd-main. Resolved in Red Hat advisory RHSA-2026:7299 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-40223] Local unprivileged user can cause Denial of Service
Local unprivileged user can cause Denial of Service. Red Hat rates this moderate (CVSS 4.7). Weakness: CWE-617. Affected package(s): systemd-main. Resolved in Red Hat advisory RHSA-2026:7299 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Low [CVE-2026-40228] Unintended output to user terminals via logger command
Unintended output to user terminals via logger command. Red Hat rates this low (CVSS 2.9). Weakness: CWE-117. Affected package(s): systemd-main. Resolved in Red Hat advisory RHSA-2026:7299 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Critical [CVE-2026-5194] Reduced security of ECDSA authentication via missing digest size checks
Reduced security of ECDSA authentication via missing digest size checks. Red Hat rates this critical (CVSS 10). Weakness: CWE-295. 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-2026-34486] Missing Encryption of Sensitive Data due to EncryptInterceptor bypass
Missing Encryption of Sensitive Data due to EncryptInterceptor bypass. Red Hat rates this important (CVSS 7.5). Weakness: CWE-807. 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 8.8 Telecommunications Update Service; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions; and 8 more.
High [CVE-2026-32990] Improper Input Validation vulnerability due to incomplete fix
Improper Input Validation vulnerability due to incomplete fix. Red Hat rates this moderate (CVSS 7.3). Weakness: CWE-184. Affected package(s): tomcat, jws6-tomcat. Resolved in Red Hat advisory RHSA-2026:12195 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8.
High [CVE-2026-29146] Information disclosure via Padding Oracle vulnerability in EncryptInterceptor
Information disclosure via Padding Oracle vulnerability in EncryptInterceptor. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1240. Affected package(s): jws6-tomcat. Resolved in Red Hat advisory RHSA-2026:20405 — 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 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.8 Telecommunications Update Service; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions; and 10 more.
High [CVE-2026-34734] HDF5 h5dump: Arbitrary code execution via a crafted HDF5 file
HDF5 h5dump: Arbitrary code execution via a crafted HDF5 file. Red Hat rates this important (CVSS 7.8). Weakness: CWE-825. 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 AI (RHEL AI) 3.
High [CVE-2026-34971] Sandbox escape due to miscompiled heap access on aarch64
Sandbox escape due to miscompiled heap access on aarch64. Red Hat rates this important (CVSS 8.5). Weakness: CWE-125. 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 Connectivity Link 1.
High [CVE-2026-39983] Command injection via CRLF sequences in file path parameters
Command injection via CRLF sequences in file path parameters. Red Hat rates this important (CVSS 8.6). Weakness: CWE-93. Affected package(s): rhdh/rhdh-hub-rhel9:1777903262, rhdh/rhdh-hub-rhel9:1776784286. Resolved in Red Hat advisory RHSA-2026:13826 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Developer Hub 1.8; Red Hat Developer Hub 1.9; Red Hat OpenShift Container Platform 4.
High [CVE-2026-35205] Arbitrary code execution due to insufficient plugin provenance verification
Arbitrary code execution due to insufficient plugin provenance verification. Red Hat rates this important (CVSS 8). Weakness: CWE-347. Affected package(s): helm-cli. Resolved in Red Hat advisory RHSA-2026:26441 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-35204] Arbitrary file write via specially crafted plugin
Arbitrary file write via specially crafted plugin. Red Hat rates this important (CVSS 8.2). Weakness: CWE-22. Affected package(s): helm-cli. Resolved in Red Hat advisory RHSA-2026:26441 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
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