Red Hat Linux Security Advisories & Vulnerabilities
16040 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
High [CVE-2026-34714] Arbitrary code execution via crafted file
Arbitrary code execution via crafted file. Red Hat rates this important (CVSS 8.6). Weakness: CWE-917. 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-2026-5121] Arbitrary code execution via integer overflow in ISO9660 image processing
Arbitrary code execution via integer overflow in ISO9660 image processing. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-190. Affected package(s): libarchive, rhcos, rhpam, rhaiis/vllm-rocm-rhel9:1778244531, rhaiis/vllm-cuda-rhel9:1778274666, rhui5/cds-kubernetes-tp-rhel9:1777459441. Resolved in Red Hat advisory RHSA-2026:20040 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 7 Extended Lifecycle 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 27 more.
Medium [CVE-2026-33985] Information disclosure via heap memory out of bounds read
Information disclosure via heap memory out of bounds read. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-125. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:19142 — 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.
Medium [CVE-2026-33982] Information disclosure and denial of service via heap-buffer-overflow read
Information disclosure and denial of service via heap-buffer-overflow read. Red Hat rates this moderate (CVSS 6.6). Weakness: CWE-125. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:16014 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-21711] Unauthorized inter-process communication due to missing Unix Domain Socket permission checks
Unauthorized inter-process communication due to missing Unix Domain Socket permission checks. Red Hat rates this moderate (CVSS 5.2). Weakness: CWE-940. Affected package(s): nodejs24, nodejs:24. Resolved in Red Hat advisory RHSA-2026:7350 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-21713] Information disclosure via timing oracle in HMAC verification
Information disclosure via timing oracle in HMAC verification. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-208. Affected package(s): nodejs24, nodejs:24. Resolved in Red Hat advisory RHSA-2026:7350 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-21714] Memory leak and Denial of Service via crafted HTTP/2 WINDOW_UPDATE frames
Memory leak and Denial of Service via crafted HTTP/2 WINDOW_UPDATE frames. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-772. Affected package(s): nodejs24, nodejs:24. Resolved in Red Hat advisory RHSA-2026:7350 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-21717] Denial of Service via V8 string hashing mechanism due to predictable hash collisions
Denial of Service via V8 string hashing mechanism due to predictable hash collisions. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-328. Affected package(s): nodejs20-main, nodejs25-main, nodejs24, nodejs22-main, nodejs:24, nodejs24-main. Resolved in Red Hat advisory RHSA-2026:7350 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-4046] Denial of Service via iconv() function with specific character sets
Denial of Service via iconv() function with specific character sets. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-617. Affected package(s): rhui5/haproxy-rhel9:1781525671, insights-proxy/insights-proxy-container-rhel9:1780420428, glibc, rhui5/installer-rhel9:1781525693, costmanagement/costmanagement-metrics-rhel9-operator:1780946239, rhui5/cds-rhel9:1781525684. Resolved in Red Hat advisory RHSA-2026:29197 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8.
Medium [CVE-2026-21712] Denial of Service via malformed Internationalized Domain Name processing
Denial of Service via malformed Internationalized Domain Name processing. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-168. Affected package(s): nodejs24, nodejs:24. Resolved in Red Hat advisory RHSA-2026:7350 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Medium [CVE-2026-5165] Virtio-win: virtio-win: memory corruption via use-after-free in virtio blk device reset
A flaw was found in virtio-win, specifically within the VirtIO Block (BLK) device. When the device undergoes a reset, it fails to properly manage memory, resulting in a use-after-free vulnerability. This issue could allow a local attacker to corrupt system memory, potentially leading to system instability or unexpected behavior. Red Hat severity: Moderate — CVSS 6.7 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-825. Affected Red Hat products: Red Hat Enterprise Linux 10; 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: virtio-win.
Medium [CVE-2026-5164] Virtio-win: virtio-win: denial of service via unvalidated descriptor count in unmap request
A flaw was found in virtio-win. The `RhelDoUnMap()` function does not properly validate the number of descriptors provided by a user during an unmap request. A local user could exploit this input validation vulnerability by supplying an excessive number of descriptors, leading to a buffer overrun. This can cause a system crash, resulting in a Denial of Service (DoS). Red Hat severity: Moderate — CVSS 6.7 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-120. Affected Red Hat products: Red Hat Enterprise Linux 10; 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: virtio-win.
Medium [CVE-2026-5119] Information disclosure via cleartext transmission of cookies during HTTPS tunnel establishment
Information disclosure via cleartext transmission of cookies during HTTPS tunnel establishment. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-319. Affected package(s): libsoup, libsoup3. Resolved in Red Hat advisory RHSA-2026:13978 — 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 8 more.
Low [CVE-2026-21715] Information disclosure due to `fs.realpathSync.native()` bypassing filesystem read restrictions
Information disclosure due to `fs.realpathSync.native()` bypassing filesystem read restrictions. Red Hat rates this low (CVSS 3.3). Weakness: CWE-425. Affected package(s): nodejs24, nodejs:24. Resolved in Red Hat advisory RHSA-2026:7350 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
Low [CVE-2026-21716] Permission bypass allows unauthorized modification of file permissions and ownership via incomplete security fix.
Permission bypass allows unauthorized modification of file permissions and ownership via incomplete security fix.. Red Hat rates this low (CVSS 3.8). Weakness: CWE-279. Affected package(s): nodejs20-main, nodejs25-main, nodejs24, nodejs22-main, nodejs:24, nodejs24-main. Resolved in Red Hat advisory RHSA-2026:7350 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
High [CVE-2026-2370] Improper authorization allows credential disclosure and GitLab app impersonation
Improper authorization allows credential disclosure and GitLab app impersonation. Red Hat rates this important (CVSS 8.1). Weakness: CWE-233. 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-2026-20664] Processing maliciously crafted web content may lead to an unexpected process crash
Processing maliciously crafted web content may lead to an unexpected process crash. Red Hat rates this important (CVSS 8.8). Weakness: CWE-120. Affected package(s): webkit2gtk3, webkitgtk4. Resolved in Red Hat advisory RHSA-2026:19206 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: 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; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 8 more.
High [CVE-2026-28859] A malicious website may be able to process restricted web content outside the sandbox
A malicious website may be able to process restricted web content outside the sandbox. Red Hat rates this important (CVSS 8.8). Weakness: CWE-120. Affected package(s): webkit2gtk3, webkitgtk4. Resolved in Red Hat advisory RHSA-2026:19206 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: 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; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 8 more.
Medium [CVE-2026-20643] Processing maliciously crafted web content may bypass Same Origin Policy
Processing maliciously crafted web content may bypass Same Origin Policy. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-346. Affected package(s): webkit2gtk3, webkitgtk4. Resolved in Red Hat advisory RHSA-2026:19206 — 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.
Medium [CVE-2026-20665] Processing maliciously crafted web content may prevent Content Security Policy from being enforced
Processing maliciously crafted web content may prevent Content Security Policy from being enforced. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-693. Affected package(s): webkit2gtk3, webkitgtk4. Resolved in Red Hat advisory RHSA-2026:19206 — 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.
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