Red Hat Linux Security Advisories & CVEs
6143 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited backstops use a safe source cadence
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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 — keep the system patched. This is the release's advisory history, not a per-package scan.
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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-2026-39314] Denial of Service via integer underflow in IPP attribute handling
Denial of Service via integer underflow in IPP attribute handling. Red Hat rates this moderate (CVSS 4). Weakness: CWE-191. Affected package(s): cups-main. Resolved in Red Hat advisory RHSA-2026:8814 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-35554] Information disclosure and data corruption due to race condition in producer buffer management
Information disclosure and data corruption due to race condition in producer buffer management. Red Hat rates this moderate (CVSS 6.8). Weakness: CWE-367. Affected package(s): kafka-clients. Resolved in Red Hat advisory RHSA-2026:11721 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-31790] Information Disclosure from Uninitialized Memory via Invalid RSA Public Key
Information Disclosure from Uninitialized Memory via Invalid RSA Public Key. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-824. Affected package(s): openssl, openssl-fips-provider, rhui5/haproxy-rhel9:1779798164, openssl-main, rhui5/rhua-rhel9:1779798222, openssl-fips-provider-main. Resolved in Red Hat advisory RHSA-2026:28211 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-31789] Heap buffer overflow on 32-bit systems from large X.509 certificate processing
Heap buffer overflow on 32-bit systems from large X.509 certificate processing. Red Hat rates this low (CVSS 5.8). Weakness: CWE-190. Affected package(s): openssl-main. Resolved in Red Hat advisory RHSA-2026:7261 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-28389] Denial of Service vulnerability in CMS processing
Denial of Service vulnerability in CMS processing. Red Hat rates this low (CVSS 5.9). Weakness: CWE-166. Affected package(s): openssl-main. Resolved in Red Hat advisory RHSA-2026:7261 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-28388] Denial of Service due to NULL pointer dereference in delta CRL processing
Denial of Service due to NULL pointer dereference in delta CRL processing. Red Hat rates this low (CVSS 5.9). Weakness: CWE-476. Affected package(s): openssl-main. Resolved in Red Hat advisory RHSA-2026:7261 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-28386] Denial of Service due to out-of-bounds read in AES-CFB128
Denial of Service due to out-of-bounds read in AES-CFB128. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-805. Affected package(s): openssl-main. Resolved in Red Hat advisory RHSA-2026:7261 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-5745] A NULL pointer dereference vulnerability exists in the ACL parser of libarchive
A NULL pointer dereference vulnerability exists in the ACL parser of libarchive. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-476. Affected package(s): libarchive-main. Resolved in Red Hat advisory RHSA-2026:8944 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 3 more.
Medium [CVE-2026-5864] Heap buffer overflow in WebAudio
Heap buffer overflow in WebAudio. Red Hat rates this important (CVSS 6.5). Weakness: CWE-131. 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.
Medium [CVE-2026-5867] Heap buffer overflow in WebML
Heap buffer overflow in WebML. Red Hat rates this important (CVSS 6.5). 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.
Medium [CVE-2026-5869] Heap buffer overflow in WebML
Heap buffer overflow in WebML. Red Hat rates this important (CVSS 6.5). Weakness: CWE-787. 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.
Medium [CVE-2026-35177] Vim zip.vim plugin: Arbitrary file overwrite via path traversal bypass
Vim zip.vim plugin: Arbitrary file overwrite via path traversal bypass. Red Hat rates this moderate (CVSS 4.1). Weakness: CWE-22. Affected package(s): vim, rhui5/installer-rhel9:1781525693, rhui5/cds-rhel9:1781525684, rhui5/rhua-rhel9:1781525739, insights-proxy/insights-proxy-container-rhel9:1782890503, rhui5/haproxy-rhel9:1781525671. Resolved in Red Hat advisory RHSA-2026:28049 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-35166] Information disclosure and content manipulation via improper markdown link escaping
Information disclosure and content manipulation via improper markdown link escaping. Red Hat rates this moderate (CVSS 4.6). Weakness: CWE-79. Affected package(s): hugo-main. Resolved in Red Hat advisory RHSA-2026:7848 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-34756] Denial of Service via excessively large 'n' parameter in OpenAI-compatible API
Denial of Service via excessively large 'n' parameter in OpenAI-compatible API. Red Hat rates this important (CVSS 6.5). Weakness: CWE-1284. 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 AI Inference Server 3.2; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI); Red Hat AI Inference Server 3.4; and 1 more.
Medium [CVE-2026-34755] Denial of Service due to excessive video frame processing
Denial of Service due to excessive video frame processing. Red Hat rates this important (CVSS 6.5). Weakness: CWE-770. 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 AI Inference Server 3.2; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI); Red Hat AI Inference Server 3.4; and 1 more.
Medium [CVE-2026-5704] hidden file injection via crafted archives
A flaw was found in tar. A remote attacker could exploit this vulnerability by crafting a malicious archive, leading to hidden file injection with fully attacker-controlled content. This bypasses pre-extraction inspection mechanisms, potentially allowing an attacker to introduce malicious files onto a system without detection. Red Hat severity: Moderate — CVSS 5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N). Weakness: CWE-434. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Discovery 2; Red Hat Hardened Images; Red Hat Update Infrastructure 5; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2026:61586, RHSA-2026:70390, RHSA-2026:61581, RHSA-2026:61783, RHSA-2026:66514, RHSA-2026:66018. Affected products named by the advisory: Red Hat package: tar.
Medium [CVE-2026-4878] Privilege escalation via TOCTOU race condition in cap_set_file()
Privilege escalation via TOCTOU race condition in cap_set_file(). Red Hat rates this important (CVSS 6.7). Weakness: CWE-367. Affected package(s): rhaiis/model-opt-cuda-rhel9:1782352950, rhaiis/vllm-spyre-rhel9:1782352919, libcap, rhui5/haproxy-rhel9:1779798164, rhcos, libcap-main. Resolved in Red Hat advisory RHSA-2026:26542 — 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 8.6 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; and 45 more.
Medium [CVE-2026-5265] Heap Over-Read in ICMP Error Response Generation
Heap Over-Read in ICMP Error Response Generation. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-130. Affected package(s): ovn25.03, ovn25.09, ovn, ovn23.09, ovn24.03, ovn23.06. Resolved in Red Hat advisory RHSA-2026:11702 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8.
Medium [CVE-2026-34933] Denial of Service via D-Bus method call
Denial of Service via D-Bus method call. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-1288. Affected package(s): avahi-main. Resolved in Red Hat advisory RHSA-2026:11316 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-27456] TOCTOU in the mount program when setting up loop devices
TOCTOU in the mount program when setting up loop devices. Red Hat rates this moderate (CVSS 4.7). Weakness: CWE-367. Affected package(s): util-linux-main. Resolved in Red Hat advisory RHSA-2026:7180 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.