Red Hat Linux Security Advisories & Vulnerabilities
16005 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-2026-46145] Validate rx_hash_key_len
Validate rx_hash_key_len. Red Hat rates this important (CVSS 7). Weakness: CWE-787. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:27354 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; 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.
High [CVE-2026-46189] Fix double free on pvrdma_alloc_ucontext() error path
Fix double free on pvrdma_alloc_ucontext() error path. Red Hat rates this important (CVSS 7). Weakness: CWE-1341. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:30848 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: 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); Red Hat Enterprise Linux AppStream EUS (v.9.6); and 34 more.
High [CVE-2026-46176] Fix error path fall-through in mlx5_ib_dev_res_srq_init()
Fix error path fall-through in mlx5_ib_dev_res_srq_init(). Red Hat rates this important (CVSS 7). Weakness: CWE-825. Affected package(s): kernel. 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 10.0 Extended Update Support; Red Hat Enterprise Linux 9.6 Extended Update Support.
High [CVE-2026-46215] Set old handle to NULL before prime swap in change_handle
Set old handle to NULL before prime swap in change_handle. Red Hat rates this important (CVSS 7.8). 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-2026-46173] prevent preemption of oopsing TASK_DEAD task
prevent preemption of oopsing TASK_DEAD task. Red Hat rates this moderate (CVSS 7). Weakness: CWE-1341. 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 1.
High [CVE-2026-46209] Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs()
Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs(). Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-190. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:34911 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
High [CVE-2026-46166] use safe list iteration in radar detect work
use safe list iteration in radar detect work. Red Hat rates this important (CVSS 7). Weakness: CWE-825. 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 10.0 Extended Update Support; Red Hat Enterprise Linux 9.6 Extended Update Support.
High [CVE-2026-43000] Privilege escalation via chained application credential impersonation and trust misuse
Privilege escalation via chained application credential impersonation and trust misuse. Red Hat rates this important (CVSS 8.4). Weakness: CWE-266. 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 13 (Queens); Red Hat OpenStack Platform 16.2; Red Hat OpenStack Platform 17.1; Red Hat OpenStack Platform 18.0.
High [CVE-2026-42999] Unauthorized access and privilege escalation via arbitrary policy attribute injection
Unauthorized access and privilege escalation via arbitrary policy attribute injection. Red Hat rates this important (CVSS 8.3). Weakness: CWE-639. 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 13 (Queens); Red Hat OpenStack Platform 16.2; Red Hat OpenStack Platform 17.1; Red Hat OpenStack Platform 18.0.
High [CVE-2026-46195] validate dacloffset before building DACL pointers
validate dacloffset before building DACL pointers. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. 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 9; Red Hat Enterprise Linux 10.
High [CVE-2026-46135] fix race between ICReq handling and queue teardown
fix race between ICReq handling and queue teardown. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-1341. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:27354 — 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.
Medium [CVE-2026-10028] Glib-networking: infinite loop in glib-networking gnutls backend allows remote denial of service via circular certificate chain
A flaw was found in glib-networking. This crafted chain, which contains circular issuer relationships, can cause an infinite loop during certificate verification. The unbounded traversal consumes excessive CPU resources, leading to a denial of service for the affected process or worker. The vulnerability happens when the application is performing a certificate validation and the crafted certificate chain contains a circular issuer relationship. Red Hat Product Security team has rated this vulnerability as having a Low impact since, in general, the result of a exploitation needs the user to be tricked to connect to a malicious server and would have a low availability impact as consequence. Red Hat severity: Low — CVSS 4.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L). Weakness: CWE-835. 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 does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: glib-networking.
Medium [CVE-2026-42250] Denial of Service in bzip2recover via a specially crafted file
Denial of Service in bzip2recover via a specially crafted file. Red Hat rates this moderate (CVSS 5). Weakness: CWE-193. Affected package(s): bzip2-main. Resolved in Red Hat advisory RHSA-2026:30268 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-9673] CSV Injection vulnerability allows arbitrary code execution via `preventCsvInjection` bypass.
CSV Injection vulnerability allows arbitrary code execution via `preventCsvInjection` bypass.. Red Hat rates this moderate (CVSS 6.1). Weakness: CWE-1236. Affected package(s): rhdh/rhdh-hub-rhel9:1782761244. Resolved in Red Hat advisory RHSA-2026:33574 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-9798] brute-force protection bypass in ciba flow
A flaw was found in Keycloak, an open-source identity and access management solution. When a user account is temporarily locked due to repeated failed login attempts, an attacker with valid client credentials can exploit the Client-Initiated Backchannel Authentication (CIBA) flow to bypass this brute-force protection. This allows continued authentication attempts and token issuance even when the account should be locked, potentially enabling further unauthorized access attempts. Affected products named by the advisory: Red Hat build of Keycloak 26.4; Red Hat build of Keycloak 26.6.
Medium [CVE-2026-9796] Keycloak: keycloak: privilege escalation via time-of-check to time-of-use (toctou) vulnerability
A flaw was found in Keycloak. An authenticated administrator with the `manage-clients` role can exploit a Time-of-check to time-of-use (TOCTOU) vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to `realm-admin` for all users within the realm, granting them extensive control over the system. The composite role relationship persists even after the attacker's own permissions are revoked and across system reboots. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N). Weakness: CWE-367. Affected Red Hat products: Red Hat build of Keycloak 26.6; Red Hat build of Keycloak 26.6.6; Red Hat Build of Keycloak. Will not fix / out of support: Red Hat Build of Keycloak. Red Hat fixing advisory: RHSA-2026:56524, RHSA-2026:56523.
Medium [CVE-2026-9801] Denial of Service via malformed LDAP password policy response
Denial of Service via malformed LDAP password policy response. Red Hat rates this moderate (CVSS 4.9). Weakness: CWE-1284. Affected package(s): rhbk/keycloak-operator-bundle:26.4.13, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9:26.4, rhbk/keycloak-operator-bundle:26.6.3, rhbk/keycloak-rhel9:26.6. Resolved in Red Hat advisory RHSA-2026:30049 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-9802] Unauthorized account access via replayed refresh tokens after cluster restart
Unauthorized account access via replayed refresh tokens after cluster restart. Red Hat rates this moderate (CVSS 6.8). Weakness: CWE-613. Affected package(s): rhbk/keycloak-operator-bundle:26.4.13, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9:26.4, rhbk/keycloak-operator-bundle:26.6.3, rhbk/keycloak-rhel9:26.6. Resolved in Red Hat advisory RHSA-2026:30049 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-9803] Denial of Service via malformed Authorization header
Denial of Service via malformed Authorization header. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-125. Affected package(s): rhbk/keycloak-operator-bundle:26.4.13, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9:26.4, rhbk/keycloak-operator-bundle:26.6.3, rhbk/keycloak-rhel9:26.6. Resolved in Red Hat advisory RHSA-2026:30049 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-9793] security policy bypass in jwe-encrypted request object processing
A flaw was found in Keycloak. When a JSON Web Encryption (JWE) encrypted request object is submitted, Keycloak may incorrectly process unsigned claims if the decrypted content is raw JSON, bypassing the configured signature policy. This allows a remote attacker to submit unauthorized claims, leading to a compromise of data integrity within the OpenID Connect (OIDC) authorization flow. While a redirect URI allowlist acts as a compensating control, this vulnerability violates OIDC Core and Financial-grade API (FAPI) signing requirements. Affected products named by the advisory: Red Hat build of Keycloak 26.4; Red Hat build of Keycloak 26.6.
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