Red Hat Linux Security Advisories & CVEs
4891 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
High [CVE-2026-37459] denial of service via crafted BGP UPDATE message
denial of service via crafted BGP UPDATE message. Red Hat rates this important (CVSS 7.5). Weakness: CWE-191. Affected package(s): frr10, frr. Resolved in Red Hat advisory RHSA-2026:24370 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 8.
High [CVE-2026-54228] TOCTOU race condition in abrt-dbus SetElement allows arbitrary file writes to dump directories
TOCTOU race condition in abrt-dbus SetElement allows arbitrary file writes to dump directories. Red Hat rates this important (CVSS 7.8). Weakness: CWE-367. 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 8.8 Telecommunications Update Service; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 3 more.
High [CVE-2026-54229] ChownProblemDir succeeds during active post-create event processing due to inadequate locking
ChownProblemDir succeeds during active post-create event processing due to inadequate locking. Red Hat rates this important (CVSS 7). Weakness: CWE-362. 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 8.8 Telecommunications Update Service; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 3 more.
High [CVE-2026-54230] event handler scripts follow symlinks when writing output files, allowing arbitrary file overwrites
event handler scripts follow symlinks when writing output files, allowing arbitrary file overwrites. Red Hat rates this important (CVSS 7). Weakness: CWE-59. 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 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; and 3 more.
High [CVE-2026-39805] HTTP Request Smuggling via Duplicate Content-Length Headers
HTTP Request Smuggling via Duplicate Content-Length Headers. Red Hat rates this important (CVSS 7.4). Weakness: CWE-444. 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-2026-39804] Denial of Service due to memory exhaustion via WebSocket permessage-deflate compression
Denial of Service due to memory exhaustion via WebSocket permessage-deflate compression. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. 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-2026-42786] Denial of Service via uncontrolled memory growth in WebSocket connections
Denial of Service via uncontrolled memory growth in WebSocket connections. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. 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-2026-42788] Denial of Service via oversized HTTP/2 frames
Denial of Service via oversized HTTP/2 frames. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. 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-2026-43001] Unauthorized cross-project access due to improper validation in EC2 credential creation
Unauthorized cross-project access due to improper validation in EC2 credential creation. Red Hat rates this important (CVSS 8). Weakness: CWE-1288. 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 OpenStack Platform 16.2; Red Hat OpenStack Platform 17.1; Red Hat OpenStack Platform 18.0; Red Hat OpenStack Services on OpenShift 18.0.
High [CVE-2026-43003] OpenStack ironic-python-agent: Arbitrary code execution via malicious image
OpenStack ironic-python-agent: Arbitrary code execution via malicious image. Red Hat rates this important (CVSS 8.5). Weakness: CWE-78. 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 OpenShift Container Platform 4.22; Red Hat OpenShift Container Platform 4.21; Red Hat OpenShift Container Platform 4.20; Red Hat OpenShift Container Platform 4.19.
High [CVE-2026-43027] pass helper to expect cleanup
pass helper to expect cleanup. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-459. 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 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
High [CVE-2026-43006] reject zero-length fixed buffer import
reject zero-length fixed buffer import. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-805. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:21557 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
High [CVE-2026-43056] fix use-after-free in add_adev() error path
fix use-after-free in add_adev() error path. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-825. 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 9; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 1.
High [CVE-2026-43020] validate LTK enc_size on load
validate LTK enc_size on load. Red Hat rates this moderate (CVSS 7.3). Weakness: CWE-120. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:21745 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
High [CVE-2026-43051] fix out-of-bounds read in wacom_intuos_bt_irq
fix out-of-bounds read in wacom_intuos_bt_irq. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-125. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:21745 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
High [CVE-2026-43023] fix race conditions in sco_sock_connect()
fix race conditions in sco_sock_connect(). Red Hat rates this moderate (CVSS 7). Weakness: CWE-821. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:21557 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
High [CVE-2026-31772] fix stack buffer overflow in hci_le_big_create_sync
fix stack buffer overflow in hci_le_big_create_sync. Red Hat rates this moderate (CVSS 7). Weakness: CWE-787. Affected package(s): kernel. 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 9; Red Hat Enterprise Linux 1.
High [CVE-2026-37457] denial of service via crafted FlowSpec component
denial of service via crafted FlowSpec component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. Affected package(s): frr, frr10. Resolved in Red Hat advisory RHSA-2026:24340 — 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.
High [CVE-2026-43037] clear skb2->cb[] in ip4ip6_err()
clear skb2->cb[] in ip4ip6_err(). Red Hat rates this critical (CVSS 8.8). Weakness: CWE-843. Affected package(s): kernel, rhcos, kernel-rt, kpatch-patch. Resolved in Red Hat advisory RHSA-2026:28741 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: NVIDIA for RHEL 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION; Red Hat Enterprise Linux 7 Extended Lifecycle Support; and 20 more.
High [CVE-2026-31703] Fix use after free in inode_switch_wbs_work_fn()
Fix use after free in inode_switch_wbs_work_fn(). Red Hat rates this important (CVSS 7). 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.