Red Hat Linux Security Advisories & Vulnerabilities
16064 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited sources checked less often
Get an email when Red Hat publishes the next one.
See Red Hat's last 90 days of advisories first. Then choose one product with live alerts free for life, or a free month of real-time alerts on everything with the severity, the fixed version and the vendor's link (card needed, then US$15/month; we email you before the first charge).
iPhone and Android apps · New on the App Store
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, so 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
High [CVE-2026-23136] Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state
Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state. Red Hat rates this moderate (CVSS 7.6). Weakness: CWE-440. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:27708 — 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-2026-23144] Linux kernel: Local denial of service and memory leak in DAMON sysfs via setup failure
Linux kernel: Local denial of service and memory leak in DAMON sysfs via setup failure. Red Hat rates this moderate (CVSS 7.3). Weakness: CWE-772. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:8342 — 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-2026-23139] update last_gc only when GC has been performed
update last_gc only when GC has been performed. Red Hat rates this moderate (CVSS 7.6). Weakness: CWE-400. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:15883 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
High [CVE-2026-23193] Fix use-after-free in iscsit_dec_session_usage_count()
Fix use-after-free in iscsit_dec_session_usage_count(). Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-364. Affected package(s): kernel-rt, kernel. Resolved in Red Hat advisory RHSA-2026:13936 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
High [CVE-2026-23204] use skb_header_pointer_careful()
use skb_header_pointer_careful(). Red Hat rates this moderate (CVSS 7.3). Weakness: CWE-1285. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:10756 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 9.
High [CVE-2026-23191] Fix racy access at PCM trigger
Fix racy access at PCM trigger. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-367. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:13936 — 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 7; Red Hat Enterprise Linux 1.
High [CVE-2026-23156] Linux kernel: Information disclosure in efivarfs via incorrect error propagation
Linux kernel: Information disclosure in efivarfs via incorrect error propagation. Red Hat rates this moderate (CVSS 7.3). Weakness: CWE-390. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:9095 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2025-71201] Fix early read unlock of page with EOF in middle
Fix early read unlock of page with EOF in middle. Red Hat rates this moderate (CVSS 4.7). Weakness: CWE-826. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2025:20095 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-23185] cancel mlo_scan_start_wk
cancel mlo_scan_start_wk. Red Hat rates this important (CVSS 6.7). Weakness: CWE-772. 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 Enterprise Linux 10; Red Hat Enterprise Linux 9.
Medium [CVE-2026-23146] Linux kernel: Denial of Service in Bluetooth HCI UART driver via null pointer dereference
Linux kernel: Denial of Service in Bluetooth HCI UART driver via null pointer dereference. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-476. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2025:20095 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
Medium [CVE-2026-23205] fix memory leak in smb2_open_file()
fix memory leak in smb2_open_file(). Red Hat rates this low (CVSS 5.5). Weakness: CWE-772. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2025:20095 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
High [CVE-2026-23111] Privilege escalation or denial of service in nf_tables via inverted element activity check
Privilege escalation or denial of service in nf_tables via inverted element activity check. Red Hat rates this important (CVSS 7.8). Weakness: CWE-672. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:9112 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux AppStream EUS (v. 10.0); Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream EUS (v.9.4); Red Hat Enterprise Linux AppStream EUS (v.9.6); and 24 more.
High [CVE-2026-2441] Use after free in CSS
Use after free in CSS. Red Hat rates this important (CVSS 8.8). 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-2026-2443] Libsoup: out-of-bounds read in libsoup handle_partial_get leading to heap information disclosure
A flaw was identified in libsoup, a widely used HTTP library in GNOME-based systems. When processing specially crafted HTTP Range headers, the library may improperly validate requested byte ranges. In certain build configurations, this could allow a remote attacker to access portions of server memory beyond the intended response. Exploitation requires a vulnerable configuration and access to a server using the embedded SoupServer component. This issue has a LOW impact. An out-of-bounds read vulnerability in libsoup, when processing HTTP Range headers, can lead to heap information disclosure. Although upstream exploitation may allow disclosure of heap memory contents, Red Hat does not build GLib with G_DISABLE_CHECKS, which prevents creation of out-of-bounds byte slices in supported products. As a result, the risk of meaningful information disclosure in shipped configurations is limited. The issue primarily affects applications exposing the SoupServer component and processing untrusted HTTP Range headers. Red Hat severity: Low — CVSS 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N). Weakness: CWE-125. 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.
Medium [CVE-2025-33042] Code injection on Java generated code
Code injection on Java generated code. Red Hat rates this moderate (CVSS 5.6). Weakness: CWE-94. Affected package(s): avro. Resolved in Red Hat advisory RHSA-2026:7109 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-25949] Denial of Service via stalled STARTTLS requests
Denial of Service via stalled STARTTLS requests. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected package(s): devspaces/traefik-rhel9:1774227265. Resolved in Red Hat advisory RHSA-2026:6192 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat OpenShift Dev Spaces 3.27.
High [CVE-2026-2007] PostgreSQL pg_trgm heap buffer overflow writes pattern onto server memory
PostgreSQL pg_trgm heap buffer overflow writes pattern onto server memory. Red Hat rates this important (CVSS 8.2). Weakness: CWE-120. Affected package(s): postgresql18-main, postgresql18. Resolved in Red Hat advisory RHSA-2026:19009 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Hardened Images; Red Hat Enterprise Linux 9.
High [CVE-2026-2006] PostgreSQL missing validation of multibyte character length executes arbitrary code
PostgreSQL missing validation of multibyte character length executes arbitrary code. Red Hat rates this important (CVSS 8.8). Weakness: CWE-1285. Affected package(s): postgresql, postgresql:16, postgresql:15, postgresql18-main, rhui5/rhua-rhel9:1773670137, postgresql:13. Resolved in Red Hat advisory RHSA-2026:4516 — 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 8.2 Advanced 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; and 11 more.
High [CVE-2026-2005] PostgreSQL pgcrypto heap buffer overflow executes arbitrary code
PostgreSQL pgcrypto heap buffer overflow executes arbitrary code. Red Hat rates this important (CVSS 8.8). Weakness: CWE-120. Affected package(s): postgresql, postgresql:16, postgresql:15, postgresql18-main, rhui5/rhua-rhel9:1773670137, postgresql:13. Resolved in Red Hat advisory RHSA-2026:4516 — 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 8.2 Advanced 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; and 11 more.
High [CVE-2026-2004] PostgreSQL intarray missing validation of type of input to selectivity estimator executes arbitrary code
PostgreSQL intarray missing validation of type of input to selectivity estimator executes arbitrary code. Red Hat rates this important (CVSS 8.8). Weakness: CWE-1287. Affected package(s): postgresql, postgresql:16, postgresql:15, postgresql18-main, rhui5/rhua-rhel9:1773670137, postgresql:13. Resolved in Red Hat advisory RHSA-2026:4516 — 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 8.2 Advanced 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; and 11 more.
Free weekly CVE digest
Every Monday: the week's critical and high advisories for Red Hat or every vendor, new CISA KEV entries and upcoming end-of-life dates.