Red Hat Linux Security Advisories & Vulnerabilities
16038 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
Medium [CVE-2026-6848] Quay: red hat quay: authentication bypass allows privileged actions without valid credentials
A flaw was found in Red Hat Quay. This allows a user with a timed-out session, or an attacker with access to an idle authenticated browser session, to perform privileged actions without providing valid credentials. The vulnerability enables unauthorized execution of sensitive operations despite the user interface displaying an error for invalid credentials. This enables the execution of sensitive operations, such as token generation or robot account creation, without requiring valid credentials after a session timeout. Red Hat severity: Moderate — CVSS 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N). Weakness: CWE-613. Affected Red Hat products: Red Hat Quay 3. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-6844] Binutils: binutils: denial of service vulnerabilities in readelf via crafted elf files
A flaw was found in the `readelf` utility of the binutils package. A local attacker could exploit two Denial of Service (DoS) vulnerabilities by providing a specially crafted Executable and Linkable Format (ELF) file. One vulnerability, a resource exhaustion (CWE-400), can lead to an out-of-memory condition. The other, a null pointer dereference (CWE-476), can cause a segmentation fault. Both issues can result in the `readelf` utility becoming unresponsive or crashing, leading to a denial of service. Moderate: A denial of service vulnerability in `readelf` can be triggered by processing a crafted ELF file, leading to resource exhaustion or a null pointer dereference. This issue affects Red Hat Enterprise Linux 7, 8, 9, and 10, as well as other Red Hat products that include the binutils package. Exploitation requires a local attacker to entice a user to execute `readelf` on a malicious file. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-400. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images; Red Hat OpenShift Container Platform 4. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-6843] Nano: nano: format string vulnerability leads to denial of service
A flaw was found in nano. A local user could exploit a format string vulnerability in the `statusline()` function. By creating a directory with a name containing `printf` specifiers, the application attempts to display this name, leading to a segmentation fault (SEGV). This results in a Denial of Service (DoS) for the `nano` application. This Moderate impact vulnerability in nano allows an attacker to cause a denial of service by crafting a malicious directory name containing format string specifiers. When nano attempts to display an error message related to such a directory, it can lead to a crash. This affects Red Hat Enterprise Linux and OpenShift Container Platform. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). Weakness: CWE-134. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; and 3 more. Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4; Red Hat package: nano.
Medium [CVE-2026-31467] Linux kernel: Denial of Service in erofs filesystem
Linux kernel: Denial of Service in erofs filesystem. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-833. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:25191 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Low [CVE-2026-6842] Nano: nano: local attacker can inject malicious.desktop launcher due to insecure directory permissions
A flaw was found in nano. In environments with permissive umask settings, a local attacker can exploit incorrect directory permissions (0777 instead of 0700) for the `~/.local` directory. This allows the attacker to inject a malicious `.desktop` launcher, which could lead to unintended actions or information disclosure if the launcher is subsequently processed. This issue affects Red Hat Enterprise Linux 8 and 9. Red Hat severity: Low — CVSS 2.5 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N). Weakness: CWE-732. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: nano.
Critical [CVE-2026-40372] Privilege escalation via improper cryptographic signature verification
Privilege escalation via improper cryptographic signature verification. Red Hat rates this critical (CVSS 9.1). Weakness: CWE-347. 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-2026-40575] Authentication bypass due to spoofed X-Forwarded-Uri header
Authentication bypass due to spoofed X-Forwarded-Uri header. Red Hat rates this important (CVSS 8.7). Weakness: CWE-290. 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 Ceph Storage 9.
High [CVE-2026-40938] Arbitrary code execution and secret exfiltration via malicious git commands
Arbitrary code execution and secret exfiltration via malicious git commands. Red Hat rates this important (CVSS 8.5). Weakness: CWE-88. Affected package(s): openshift-pipelines/pipelines-rhel9-operator:1780645012, serve-tkn-cli, openshift-builds/openshift-builds-image-processing-rhel9:1778682932, openshift-builds/openshift-builds-image-processing-rhel9:1780373835, openshift-builds/openshift-builds-git-cloner-rhel9:1780374151, openshift-builds/openshift-builds-image-bundler-rhel9:1780373867. Resolved in Red Hat advisory RHSA-2026:24484 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Builds 1.7.4; Red Hat OpenShift Builds 1.8.0; Red Hat OpenShift Pipelines 1.21; Red Hat OpenShift Builds 1.7.1; and 2 more.
High [CVE-2026-40906] Critical data compromise and loss via SQL injection
Critical data compromise and loss via SQL injection. Red Hat rates this important (CVSS 8.8). Weakness: CWE-89. 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-2026-22016] Enhance Path Factories Redux (Oracle CPU 2026-04)
Enhance Path Factories Redux (Oracle CPU 2026-04). Red Hat rates this important (CVSS 7.5). Weakness: CWE-611. Affected package(s): java. Resolved in Red Hat advisory RHSA-2026:11829 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Build of OpenJDK 17.0.19; Red Hat Build of OpenJDK 17.0.9; Red Hat Build of OpenJDK 21.0.11; Red Hat Build of OpenJDK 25.0.3; and 20 more.
High [CVE-2026-34282] Enhance TLS connection handling (Oracle CPU 2026-04)
Enhance TLS connection handling (Oracle CPU 2026-04). Red Hat rates this important (CVSS 7.5). Weakness: CWE-835. Affected package(s): java. Resolved in Red Hat advisory RHSA-2026:11829 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Build of OpenJDK 17.0.19; Red Hat Build of OpenJDK 17.0.9; Red Hat Build of OpenJDK 21.0.11; Red Hat Build of OpenJDK 25.0.3; and 17 more.
High [CVE-2026-40895] Information disclosure via cross-domain redirects
Information disclosure via cross-domain redirects. Red Hat rates this important (CVSS 7.5). Weakness: CWE-212. Affected package(s): openshift-service-mesh/kiali-rhel9:1778164042, rhoai/odh-mod-arch-model-registry-rhel9:1780467147, rhoai/odh-mod-arch-gen-ai-rhel9:1778473763, devspaces/openvsx-rhel9:1779528224, rhoai/odh-dashboard-rhel9:1779189627, cryostat/cryostat-openshift-console-plugin-rhel9:4.2.0. Resolved in Red Hat advisory RHSA-2026:13826 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Management for Kubernetes 2.15; Red Hat Advanced Cluster Security for Kubernetes 4.10; and 43 more.
High [CVE-2026-40890] Denial of Service via malformed Markdown input
Denial of Service via malformed Markdown input. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-1286. Affected package(s): multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779925273, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1780167118, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779579439, rhacm2/acm-grafana-rhel9:1780677003. Resolved in Red Hat advisory RHSA-2026:21769 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-40611] Arbitrary file write and deletion via path traversal from a malicious ACME server
Arbitrary file write and deletion via path traversal from a malicious ACME server. Red Hat rates this important (CVSS 8.8). Weakness: CWE-22. Affected package(s): devspaces/traefik-rhel9:1779786779. Resolved in Red Hat advisory RHSA-2026:21772 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat OpenShift Dev Spaces 3.28.
High [CVE-2026-40161] Information disclosure of Git API token via user-controlled serverURL
Information disclosure of Git API token via user-controlled serverURL. Red Hat rates this moderate (CVSS 7.7). Weakness: CWE-918. Affected package(s): openshift-builds/openshift-builds-webhook-rhel9:1780374084, openshift-builds/openshift-builds-controller-rhel9:1780373846, serve-tkn-cli, openshift-builds/openshift-builds-image-processing-rhel9:1780373835, openshift-builds/openshift-builds-git-cloner-rhel9:1780374151, openshift-builds/openshift-builds-rhel9-operator:1780480839. Resolved in Red Hat advisory RHSA-2026:24484 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-6786] Memory safety bugs fixed in Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150
Memory safety bugs fixed in Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 9 more.
High [CVE-2026-6784] Memory safety bugs fixed in Firefox 150 and Thunderbird 150
Memory safety bugs fixed in Firefox 150 and Thunderbird 150. Red Hat rates this important (CVSS 7.5). 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.
High [CVE-2026-6785] Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150
Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 9 more.
High [CVE-2026-6754] Use-after-free in the JavaScript Engine component
Use-after-free in the JavaScript Engine component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-825. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 9 more.
High [CVE-2026-6752] Incorrect boundary conditions in the WebRTC component
Incorrect boundary conditions in the WebRTC component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-131. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 9 more.
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