Red Hat Linux Security Advisories & Vulnerabilities
16036 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited sources checked less often
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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
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.
High [CVE-2026-43038] clear skb2->cb[] in ip6_err_gen_icmpv6_unreach()
clear skb2->cb[] in ip6_err_gen_icmpv6_unreach(). Red Hat rates this important (CVSS 7.3). Weakness: CWE-843. Affected package(s): kernel, kernel-rt. 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 AppStream EUS (v. 10.0); Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream E4S (v.9.2); Red Hat Enterprise Linux AppStream E4S (v.9.4); and 44 more.
High [CVE-2026-31709] validate the whole DACL before rewriting it in cifsacl
validate the whole DACL before rewriting it in cifsacl. Red Hat rates this important (CVSS 7.8). Weakness: CWE-1288. 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 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; and 1 more.
Medium [CVE-2026-42404] Information disclosure and network access bypass via PolicyReference API
Information disclosure and network access bypass via PolicyReference API. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-918. Affected package(s): neethi. Resolved in Red Hat advisory RHSA-2026:19835 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-42402] Denial of Service via algorithmic complexity in policy normalization
Denial of Service via algorithmic complexity in policy normalization. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-770. Affected package(s): neethi. Resolved in Red Hat advisory RHSA-2026:19835 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-42403] Denial of Service via circular policy references
Denial of Service via circular policy references. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-606. Affected package(s): neethi. Resolved in Red Hat advisory RHSA-2026:19835 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-5403] Heap-based Buffer Overflow in Wireshark
Heap-based Buffer Overflow in Wireshark. Red Hat rates this important (CVSS 7.8). Weakness: CWE-122. 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 10.
High [CVE-2026-5656] Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Wireshark
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Wireshark. Red Hat rates this important (CVSS 7.8). Weakness: CWE-22. Affected package(s): wireshark. Resolved in Red Hat advisory RHSA-2026:20600 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support.
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