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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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-2026-42013] Certificate validation bypass due to oversized Subject Alternative Name
Certificate validation bypass due to oversized Subject Alternative Name. Red Hat rates this moderate (CVSS 8.2). Weakness: CWE-295. Affected package(s): rhui5/installer-rhel9:1781525693, libtasn1, gnutls, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:20613 — 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 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 24 more.
High [CVE-2026-42009] Denial of Service via DTLS packet reordering vulnerability
Denial of Service via DTLS packet reordering vulnerability. Red Hat rates this important (CVSS 7.5). Weakness: CWE-475. Affected package(s): rhui5/installer-rhel9:1781525693, libtasn1, gnutls, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:29794 — 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 52 more.
High [CVE-2026-42010] Authentication Bypass via NUL Character in Username
Authentication Bypass via NUL Character in Username. Red Hat rates this important (CVSS 7.1). Weakness: CWE-170. Affected package(s): rhui5/installer-rhel9:1781525693, libtasn1, gnutls, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:20613 — 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 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 50 more.
High [CVE-2026-5260] Information disclosure via heap overread in RSA key exchange
Information disclosure via heap overread in RSA key exchange. Red Hat rates this moderate (CVSS 8.2). Weakness: CWE-126. Affected package(s): rhui5/installer-rhel9:1781525693, libtasn1, gnutls, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:20613 — 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 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 25 more.
Medium [CVE-2026-4873] Information disclosure due to incorrect TLS connection reuse
Information disclosure due to incorrect TLS connection reuse. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-319. Affected package(s): curl-main. Resolved in Red Hat advisory RHSA-2026:12916 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-5773] Wrong file transfer due to incorrect SMB connection reuse
Wrong file transfer due to incorrect SMB connection reuse. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-1025. Affected package(s): curl-main. Resolved in Red Hat advisory RHSA-2026:12916 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-6253] Proxy credential disclosure via redirects to unauthenticated proxies
Proxy credential disclosure via redirects to unauthenticated proxies. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-201. Affected package(s): curl-main. Resolved in Red Hat advisory RHSA-2026:12916 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-5545] Authentication bypass due to incorrect HTTP Negotiate connection reuse
Authentication bypass due to incorrect HTTP Negotiate connection reuse. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-488. Affected package(s): curl-main. Resolved in Red Hat advisory RHSA-2026:12916 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-6429] Credential leak via reused proxy connection during HTTP redirects
Credential leak via reused proxy connection during HTTP redirects. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-201. Affected package(s): curl-main. Resolved in Red Hat advisory RHSA-2026:12916 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-42014] Use-after-free in gnutls_pkcs11_token_set_pin
Use-after-free in gnutls_pkcs11_token_set_pin. Red Hat rates this moderate (CVSS 6.6). Weakness: CWE-825. Affected package(s): rhui5/installer-rhel9:1781525693, libtasn1, gnutls, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:20613 — 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 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 16 more.
Medium [CVE-2026-42015] Memory corruption due to off-by-one error in PKCS#12 bag handling
Memory corruption due to off-by-one error in PKCS#12 bag handling. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-193. Affected package(s): rhui5/installer-rhel9:1781525693, libtasn1, gnutls, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:20613 — 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 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 16 more.
Low [CVE-2026-6276] Information disclosure due to cookie leak when reusing connections with custom Host headers
Information disclosure due to cookie leak when reusing connections with custom Host headers. Red Hat rates this low (CVSS 3.7). Weakness: CWE-346. Affected package(s): curl-main. Resolved in Red Hat advisory RHSA-2026:12916 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Low [CVE-2026-5419] Information disclosure via timing side-channel in PKCS#7 padding removal
Information disclosure via timing side-channel in PKCS#7 padding removal. Red Hat rates this low (CVSS 3.7). Weakness: CWE-208. Affected package(s): rhui5/haproxy-rhel9:1781525671, gnutls, rhui5/installer-rhel9:1781525693, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:20613 — 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 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Discovery 2; and 9 more.
Critical [CVE-2026-41607] Out-of-bounds Read vulnerability
Out-of-bounds Read vulnerability. Red Hat rates this important (CVSS 9.1). Weakness: CWE-125. Affected package(s): multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779212259, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1780167118, rhosdt/tempo-rhel9:1778158374, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779579439, rhosdt/tempo-query-rhel9:1778158343. Resolved in Red Hat advisory RHSA-2026:21769 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Management for Kubernetes 2.15; Red Hat OpenShift distributed tracing 3.9.3; Red Hat AI Inference Server; and 14 more.
Critical [CVE-2026-7358] Use after free in Animation
Use after free in Animation. Red Hat rates this important (CVSS 9.6). 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.
Critical [CVE-2026-7352] Use after free in Media
Use after free in Media. Red Hat rates this important (CVSS 9). 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.
Critical [CVE-2026-7363] Use after free in Canvas
Use after free in Canvas. Red Hat rates this important (CVSS 9.6). 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.
Critical [CVE-2026-7350] Use after free in WebMIDI
Use after free in WebMIDI. Red Hat rates this important (CVSS 9). 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.
Critical [CVE-2026-7342] Use after free in WebView
Use after free in WebView. Red Hat rates this important (CVSS 9.6). 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.
Critical [CVE-2026-7333] Use after free in GPU
Use after free in GPU. Red Hat rates this important (CVSS 9.6). 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.
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