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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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, 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-2026-6753] Incorrect boundary conditions in the WebRTC component
Incorrect boundary conditions in the WebRTC component. 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-2026-6751] Uninitialized memory in the Audio/Video: Web Codecs component
Uninitialized memory in the Audio/Video: Web Codecs component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-824. 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-2026-6750] Privilege escalation in the Graphics: WebRender component
Privilege escalation in the Graphics: WebRender component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-266. 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-2026-6749] Information disclosure due to uninitialized memory in the Graphics: Canvas2D component
Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-824. 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-2026-6747] Use-after-free in the WebRTC component
Use-after-free in the WebRTC 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-2026-6746] Use-after-free in the DOM: Core & HTML component
Use-after-free in the DOM: Core & HTML 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-2026-40244] Arbitrary code execution via integer overflow in EXR image processing
Arbitrary code execution via integer overflow in EXR image processing. Red Hat rates this important (CVSS 8.2). Weakness: CWE-190. 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-2026-22013] Improve Kerberos credentialing (Oracle CPU 2026-04)
Improve Kerberos credentialing (Oracle CPU 2026-04). Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-319. 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 Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-22021] Enhance certificate chain validation (Oracle CPU 2026-04)
Enhance certificate chain validation (Oracle CPU 2026-04). Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-674. 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 Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-33813] Denial of Service via malformed WEBP image parsing
Denial of Service via malformed WEBP image parsing. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-190. Affected package(s): multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779925273, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1780167118, cryostat/cryostat-storage-rhel9:4.2.0, golang1, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779579439. 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.
Medium [CVE-2017-20230] Storable for Perl: Denial of service via stack overflow in retrieve_hook function
Storable for Perl: Denial of service via stack overflow in retrieve_hook function. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-190. Affected package(s): perl-storable-main. Resolved in Red Hat advisory RHSA-2026:7578 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-4367] Denial of Service via out-of-bounds read in XPM file parsing
Denial of Service via out-of-bounds read in XPM file parsing. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-125. Affected package(s): libxpm-main. Resolved in Red Hat advisory RHSA-2026:30354 — 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 2 more.
Medium [CVE-2026-6772] Incorrect boundary conditions in the Libraries component in NSS
Incorrect boundary conditions in the Libraries component in NSS. Red Hat rates this moderate (CVSS 6.1). 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 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Medium [CVE-2026-6770] Other issue in the Storage: IndexedDB component
Other issue in the Storage: IndexedDB component. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-440. 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 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Medium [CVE-2026-6771] Mitigation bypass in the DOM: Security component
Mitigation bypass in the DOM: Security component. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-358. 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 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Medium [CVE-2026-6769] Privilege escalation in the Debugger component
Privilege escalation in the Debugger component. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-266. 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 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Medium [CVE-2026-6767] Other issue in the Libraries component in NSS
Other issue in the Libraries component in NSS. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-676. 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 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Medium [CVE-2026-6766] Incorrect boundary conditions in the Libraries component in NSS
Incorrect boundary conditions in the Libraries component in NSS. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-125. 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 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Medium [CVE-2026-6764] Incorrect boundary conditions in the DOM: Device Interfaces component
Incorrect boundary conditions in the DOM: Device Interfaces component. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-805. 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 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
Medium [CVE-2026-6765] Information disclosure in the Form Autofill component
Information disclosure in the Form Autofill component. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-359. 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 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
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