Red Hat Linux Security Advisories & CVEs
13668 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited backstops use a safe source cadence
Android app · Google Play
Monitor Red Hat CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.
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.
Official source
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-2026-64578] validate compound request size before reading StructureSize2
validate compound request size before reading StructureSize2. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-125.
Medium [CVE-2026-64575] fix double sock release on batch realloc
fix double sock release on batch realloc. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-825.
Medium [CVE-2026-64576] initialize extack in nh_res_bucket_migrate
initialize extack in nh_res_bucket_migrate(). Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-824. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9.
Medium [CVE-2026-64570] fix fils_discovery double free on alloc failure
fix fils_discovery double free on alloc failure. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-1341. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 9.
Low [CVE-2026-18839] size_t underflow in singleOptionHelp
size_t underflow in singleOptionHelp. Red Hat rates this low (CVSS 2.2). Weakness: CWE-191. 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 2 more. Affected products named by the advisory: Red Hat Hardened Images; Red Hat OpenShift Container Platform 4.
Low [CVE-2026-70430] Privilege escalation via unrestricted object instantiation in project naming strategy configuration
Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not restrict the types of objects that can be instantiated as part of the project naming strategy configuration, allowing attackers with Overall/Manage permission to instantiate arbitrary types related to configuration, including those intended for configuration only by administrators. A flaw was found in Jenkins. This includes types typically reserved for administrators, potentially leading to unauthorized configuration changes or other administrative actions within the Jenkins environment. Red Hat ships Jenkins as part of OpenShift Developer Tools and Services (ocp-tools). This weakens the separation between the Overall/Manage and Overall/Administer permissions. Exploitation requires an authenticated user who already holds the Overall/Manage permission, which is not granted by default and is typically reserved for trusted operators, limiting the practical impact. Fixed upstream in Jenkins 2.576 (weekly) and LTS 2.568.2. Red Hat severity: Low — CVSS 3.8 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N). Weakness: CWE-502. Will not fix / out of support: OpenShift Developer Tools and Services. Red Hat does not currently list a fixing RHSA for this CVE.
High [CVE-2026-56848] Heap-use-after-free in HTTP/2 handling can lead to denial of service
Heap-use-after-free in HTTP/2 handling can lead to denial of service. Red Hat rates this important (CVSS 7.5). Weakness: CWE-825. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
High [CVE-2026-15307] Remote code execution via GeoDjango spatial lookups
Remote code execution via GeoDjango spatial lookups. Red Hat rates this important (CVSS 8.8). Weakness: CWE-434. Red Hat lists fixing advisory RHSA-2026:59153 with package ansible-automation-platform-25/hub-rhel8:1787101922, ansible-automation-platform-26/lightspeed-rhel9:1787244079, python3.12-django-0:5.2.17-1.el8ap, ansible-automation-platform-25/lightspeed-rhel8:1787229385. Affected products named by the advisory: Red Hat Ansible Automation Platform 2; Red Hat Discovery 2; Red Hat OpenStack Platform 16.2; Red Hat OpenStack Platform 17.1; and 5 more. Affected products named by the advisory: Red Hat OpenStack Platform 18.0; Red Hat Satellite 6; Red Hat Update Infrastructure 4 for Cloud Providers; Red Hat Update Infrastructure 5; and 1 more.
High [CVE-2026-68494] Denial of Service via incomplete fix in async JSON parser
Denial of Service via incomplete fix in async JSON parser. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Red Hat lists fixing advisory RHSA-2026:53643 with package eap7-ironjacamar-0:1.5.26-2.Final_redhat_00001.1.el7eap, eap7-undertow-0:2.2.40-2.SP3_redhat_00001.1.el7eap, eap7-wildfly-0:7.4.25-2.GA_redhat_00001.1.el7eap, jackson-core. Affected products named by the advisory: Cryostat 4; OpenShift Developer Tools and Services; OpenShift Serverless; Red Hat AI Inference Server; and 28 more. Affected products named by the advisory: Red Hat AMQ Broker 7; Red Hat AMQ Clients; Red Hat Ansible Automation Platform 2; Red Hat build of Apache Camel 4 for Quarkus 3; and 24 more.
High [CVE-2026-42169] GIMP APNG loader heap-buffer-overflow when fcTL width exceeds IHDR width (file-png.c)
A heap-buffer-overflow vulnerability exists in the APNG (Animated PNG) file loader of GIMP. This flaw occurs when the `fcTL` width exceeds the `IHDR` width, leading to pixel data being written past the end of a heap allocation. Additionally, a heap-based buffer overflow exists in the DDS plug-in due to a BPP mismatch in the `load_layer()` function. Both vulnerabilities can be triggered by opening a specially crafted image file, potentially leading to code execution. This vulnerability in GIMP's APNG loader and DDS plug-in could lead to a heap-buffer-overflow when processing specially crafted image files. Exploitation requires a user to open a malicious APNG or DDS image. Red Hat products shipping GIMP are affected if users are exposed to untrusted image files. Red Hat severity: Moderate — CVSS 7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-131. Affected Red Hat products: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat lists Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8 as not affected. Red Hat fixing advisory: RHSA-2026:50817, RHSA-2026:73768. Affected products named by the advisory: Red Hat package: gimp.
High [CVE-2026-56846] Remote memory exhaustion via HTTP/2 retained header blocks
Remote memory exhaustion via HTTP/2 retained header blocks. Red Hat rates this important (CVSS 7.5). Weakness: CWE-400. Red Hat lists fixing advisory RHSA-2026:48305 with package nodejs22-main-22.23.2-2.3.hum1, nodejs24-main-24.18.1-0.1.hum1.
High [CVE-2026-42170] GIMP DDS plug-in heap-based buffer overflow via BPP mismatch in load_layer (ddsread.c)
GIMP DDS plug-in heap-based buffer overflow via BPP mismatch in load_layer() (ddsread.c). Red Hat rates this important (CVSS 7.8). Weakness: CWE-131. Affected products named by the advisory: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8.
High [CVE-2026-64561] Check for invalid/obsolete root *after* making MMU pages available
Check for invalid/obsolete root *after* making MMU pages available. Red Hat rates this moderate (CVSS 7). Weakness: CWE-825. Red Hat lists fixing advisory RHSA-2026:45192 with package kernel-0:5.14.0-687.30.1.el9_8, kernel-0:6.12.0-55.94.1.el10_0, kernel-0:4.18.0-553.147.1.el8_10, kernel-0:5.14.0-427.141.1.el9_4. Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8.
High [CVE-2026-67855] Denial of Service via heap use-after-free
Denial of Service via heap use-after-free. Red Hat rates this important (CVSS 7.5). Weakness: CWE-825.
High [CVE-2026-67857] Denial of Service via out-of-bounds read in client-side function
Denial of Service via out-of-bounds read in client-side function. Red Hat rates this important (CVSS 7.5). Weakness: CWE-125.
High [CVE-2026-51401] Arbitrary code execution via vms_fixfilename function
Arbitrary code execution via vms_fixfilename() function. Red Hat rates this important (CVSS 7.8). Weakness: CWE-641.
High [CVE-2026-67858] Denial of Service via buffer overflow in Local Discovery Server
Denial of Service via buffer overflow in Local Discovery Server. Red Hat rates this important (CVSS 7.5). Weakness: CWE-120.
High [CVE-2026-67859] Denial of Service via Discovery/LDS handling
Denial of Service via Discovery/LDS handling. Red Hat rates this important (CVSS 7.5). Weakness: CWE-120.
High [CVE-2026-67862] Denial of Service via buffer-overflow
Denial of Service via buffer-overflow. Red Hat rates this important (CVSS 7.5). Weakness: CWE-120.
High [CVE-2026-8400] Arbitrary class loading and instantiation via malicious IIOP server
Arbitrary class loading and instantiation via malicious IIOP server. Red Hat rates this important (CVSS 8.1). Weakness: CWE-470. Red Hat lists fixing advisory RHSA-2026:52949 with package java-1.8.0-ibm-1:1.8.0.8.70-1.el8_10. Affected product named by the advisory: Red Hat Enterprise Linux 8.