Red Hat Linux RHEL & SELinux Vulnerabilities & Security Advisories
1648 advisories tracked · Red Hat Security Data API · 2 listed in the CISA Known Exploited Vulnerabilities catalog
Every row below is a published Red Hat Linux advisory that VulniPulse classified as RHEL & SELinux, with the CVEs, affected and fixed releases and exploitation status the vendor stated. Severity mix: 35 critical, 622 high, 819 medium, 170 low.
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Latest Red Hat RHEL & SELinux advisories
High [CVE-2026-67320] Information disclosure via Prototype Pollution in Node HTTP adapter
axios in a Node.js deployment using the HTTP adapter can route requests through an attacker-controlled proxy. axios hardens merged request configuration by creating a null-prototype object, but request interceptors run after the merge; a common immutable interceptor pattern such as {...config} or Object.assign({}, config) converts the hardened config back into a regular object. axios then dispatches that object without re-hardening it, and the Node HTTP adapter reads config.proxy through the prototype chain. For plaintext HTTP requests, the proxy can observe Authorization headers, Basic auth from config.auth, method, absolute URL, Host, and request body, and can return its own response. This does not establish browser impact or HTTPS header/body disclosure under normal TLS validation. Affected versions are >=0.31.1 (fixed in 0.33.0) and >=1.15.2 (fixed in 1.18.0). This vulnerability, known as Prototype Pollution, occurs because request interceptors can revert hardened request configurations, allowing an attacker to manipulate the Object.prototype.proxy property. If successfully exploited, an attacker can route affected plaintext HTTP requests through a malicious proxy, potentially observing sensitive data such as authentication headers and request bodies, and even returning their own responses.
High [CVE-2026-18358] gnome-remote-desktop system-mode RDP server missing connection throttling allows unauthenticated denial of service
A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon is running in system mode with RDP enabled, the incoming connection handler bypasses the connection throttler, allowing an unauthenticated remote attacker to open many parallel pre-authentication connections to the RDP listener. This can accumulate accepted sockets and pending routing-token operations until timeout, exhausting resources and preventing legitimate users from establishing RDP sessions. This issue does not affect the upstream version. This vulnerability only affects deployments where gnome-remote-desktop is explicitly configured to run in system mode with the RDP port reachable from untrusted networks. The default user-session mode is not affected. The Moderate rather than Important severity rating reflects that exploitation requires a non-default configuration (system-mode RDP must be explicitly enabled and the listener must be network-accessible), which significantly limits the practical attack surface. Red Hat severity: Moderate — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-400. Affected Red Hat products: Red Hat Enterprise Linux 10. Red Hat fixing advisory: RHSA-2026:54512. Affected products named by the advisory: Red Hat package: gnome-remote-desktop.
High [CVE-2026-11770] pre-auth LDAP filter injection in CleanAllRUV status check
A flaw was found in 389 Directory Server. An unauthenticated remote attacker can inject LDAP search filters into the CleanAllRUV replication status-check extended operation. Because the handler performs the search against cn=config with elevated replication plugin privileges and returns a boolean match result, the attacker can extract sensitive server configuration metadata, including replication bind DNs and password storage scheme information. Red Hat products with `nsslapd-allow-anonymous-access` enabled by default are particularly susceptible. Red Hat severity: Moderate — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-90. Affected products named by the advisory: Red Hat Directory Server 11.7 E4S for RHEL 8; Red Hat Directory Server 11.9 for RHEL 8; Red Hat Directory Server 12.2 E4S for RHEL 9; Red Hat Directory Server 12.4 E4S for RHEL 9; and 14 more.
High [CVE-2026-15722] pre-authentication stack buffer overflow in get_ruvelement_from_berval via unbounded replica ID parsing
A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base). The get_ruvelement_from_berval() function in repl5_ruv.c copies digit characters from a network-supplied RUV berval into a fixed 16-byte stack buffer without bounds checking. A remote unauthenticated attacker can crash the LDAP server by sending a crafted StartNSDS50ReplicationRequest extended operation containing a replica ID field with more than 16 digit characters. The overflow occurs during payload decoding, before any authorization check. Stack protectors limit impact to denial of service. The overflow data is limited to ASCII digit characters and a null byte. Stack protectors and ASLR prevent the overflow from being leveraged for code execution — the stack canary detects the corruption and aborts the process. The practical impact is therefore limited to denial of service. Customers who have restricted network access to the LDAP port to trusted replication partners, or who have disabled anonymous access by setting nsslapd-allow-anonymous-access to 'off' or 'rootdse', are not exposed to unauthenticated exploitation of this flaw. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-121.
High [CVE-2026-18140] Denial of Service via uncontrolled recursion with deeply nested JSON
Uncontrolled recursion in the unknown-key skip path of the aws-smithy-json runtime crate before 0.62.7, which the smithy-rs code generator invokes from every generated struct deserializer, might allow remote unauthenticated users to cause a denial of service (process abort via stack exhaustion) via a single small HTTP request containing deeply nested JSON to a smithy-rs generated server. To remediate this issue, users should upgrade to aws-smithy-json 0.62.7 or later and rebuild. This can make the affected server unavailable to legitimate users. Red Hat products utilizing `smithy-rs` generated servers, such as components in Red Hat Enterprise Linux and Red Hat Trusted Artifact Signer, are susceptible to service disruption if exposed to untrusted networks. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-776. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Logging Subsystem for Red Hat OpenShift 6.6; Red Hat Trusted Artifact Signer; Red Hat Trusted Profile Analyzer. Red Hat lists Confidential Compute Attestation; Red Hat Trusted Profile Analyzer as not affected. Will not fix / out of support: Red Hat Trusted Profile Analyzer. Red Hat fixing advisory: RHSA-2026:67593, RHSA-2026:67595, RHSA-2026:66521. Affected products named by the advisory: Red Hat package: goose.
High [CVE-2026-60075] Date::Manip for Perl: Denial of Service via CPU exhaustion in date parsing
Date::Manip versions through 6.99 for Perl allow CPU exhaustion via quadratic backtracking in the unanchored time substitution in _parse_time. _parse_time removes a time from anywhere in the string with the unanchored substitution `s/$timerx/ /`, where $timerx is an auto-generated alternation of time patterns reached through a leading `(?:$atrx|^|\s+)`. The engine therefore retries the match at every position of an interior whitespace run: at each start position the leading `\s+` consumes the rest of the run greedily, the time alternation fails because the run holds no digits, and the engine backtracks a space at a time across the run before advancing the start position, which is quadratic in the length of the run. No time need be present in the string for this to happen, only a long run of whitespace, and the parse time rises about fourfold for each doubling of the run: a few kilobytes of whitespace costs seconds of CPU per parse and tens of kilobytes costs minutes. Any caller that passes an untrusted string of unbounded length to ParseDate(), Date::Manip::Date->parse() or ->parse_time() can be made to spend unbounded CPU in a single parse, a denial of service. An attacker could exploit a vulnerability in the `_parse_time` function by providing a specially crafted input string containing long sequences of whitespace.
High [CVE-2026-16529] Denial of Service due to signed integer overflow
A signed integer overflow in the PCP __pmGetPDU() function can be exploited via crafted network packets during PDU processing or SASL negotiation. This permanently blinds the affected daemon, resulting in a total denial of service (DoS) for subsequent packet reads. This is an Important denial of service vulnerability in PCP due to a signed integer overflow. An unauthenticated remote attacker could exhaust resources by sending a specially crafted request to the pmlogger or pmcd services, leading to a permanent denial of service for the affected daemon. While both services are typically bound to the loopback interface by default, remote exploitation is possible if the default binding configuration is altered or if PMLOGGER_LOCAL is unset for pmlogger. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-190. 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 9 more.
High [CVE-2026-16527] PCP pmproxy: Unauthenticated access to /store endpoint allows bypassing pmcd access rules
An unauthenticated remote attacker can bypass access controls by sending crafted requests to the PCP pmproxy /store endpoint. This allows the attacker to overwrite any PMDA metric, leading to arbitrary code execution and system takeover. Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L). Weakness: CWE-306. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat lists Red Hat OpenShift Container Platform 4 as not affected. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:55617, RHSA-2026:55560, RHSA-2026:55740. Affected products named by the advisory: Red Hat package: pcp.
High [CVE-2026-16526] Privilege escalation to root via linux_sockets PMDA vulnerability
A flaw in the PCP linux_sockets module exposes an unsecured internal connection. An attacker with initial code execution can exploit this to escalate privileges and execute arbitrary commands as root. This is an Important privilege escalation vulnerability in PCP where an attacker can escalate privileges from the `pcp` user to `root`. This flaw requires a prior `linux_sockets` command injection vulnerability and a non-default configuration where the `linux_sockets` PMDA is loaded as a DSO in PMCD. Exploitation can occur locally or remotely depending on the `pmcd` and `pmproxy` configurations. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-403. 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 9 more.
High [CVE-2026-16524] PCP linux_sockets PMDA: Arbitrary Command Execution via Command Injection
A command injection flaw in PCP's linux_sockets PMDA allows malicious shell metacharacters via the network.persocket.filter metric. This failed validation lets attackers execute arbitrary commands as the PMDA user when metrics refresh. This flaw is rated as Important because it allows a local attacker to achieve arbitrary command execution as the PMDA process user within the Performance Co-Pilot (PCP) environment. Exploitation requires the `linux_sockets` PMDA to be loaded and the `ss` utility to be present, which are common configurations. The vulnerability stems from an inverted validation logic in the `sockets_check_filter()` function, enabling the injection of malicious shell metacharacters into a filter value that is later executed. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-78. 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 9 more.
High [CVE-2026-17847] Insufficient validation of untrusted input in ANGLE
Insufficient validation of untrusted input in ANGLE in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium) Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Moderate — CVSS 7.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L). Weakness: CWE-1286. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:74084, RHSA-2026:69098. Affected products named by the advisory: Red Hat package: webkit2gtk3; Red Hat package: webkitgtk4.
High [CVE-2026-17745] Out of bounds read in Skia
Out of bounds read in Skia in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium) Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Moderate — CVSS 8.2 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H). Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 9. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:74084. Affected products named by the advisory: Red Hat package: webkit2gtk3; Red Hat package: webkitgtk4.
High [CVE-2026-17702] Inappropriate implementation in Skia
Inappropriate implementation in Skia in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (Chromium security severity: High) Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 7.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N). Weakness: CWE-346. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 9. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:74084. Affected products named by the advisory: Red Hat package: webkit2gtk3; Red Hat package: webkitgtk4.
High [CVE-2026-17701] Out of bounds read in ANGLE
Insufficient validation of untrusted input in ANGLE in Google Chrome on Mac prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High) An out of bounds read flaw was found in the ANGLE component of the Chromium browser. Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 8.2 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H). Weakness: CWE-1286. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:74084, RHSA-2026:69098. Affected products named by the advisory: Red Hat package: webkit2gtk3; Red Hat package: webkitgtk4.
High [CVE-2026-17689] Uninitialized Use in ANGLE
Uninitialized Use in ANGLE in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High) An uninitialized use flaw was found in the ANGLE component of the Chromium browser. Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 7.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N). Weakness: CWE-824. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:74084, RHSA-2026:69098. Affected products named by the advisory: Red Hat package: webkit2gtk3; Red Hat package: webkitgtk4.
High [CVE-2026-17671] Insufficient validation of untrusted input in ANGLE
Insufficient validation of untrusted input in ANGLE in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High) Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 8.2 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H). Weakness: CWE-1286. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:74084, RHSA-2026:69098. Affected products named by the advisory: Red Hat package: webkit2gtk3; Red Hat package: webkitgtk4.
High [CVE-2026-5056] Arbitrary code execution via stack-based buffer overflow in qtdemux
GStreamer qtdemux Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the parsing of UncompressedFrameConfigBox structures. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29392. This occurs due to insufficient data length validation when parsing UncompressedFrameConfigBox structures. An Important security flaw in GStreamer's QuickTime parser could allow an attacker to execute malicious code if a user opens a specially crafted media file. Because the vulnerable code was introduced in GStreamer 1.26.0, Red Hat Enterprise Linux (RHEL) versions 9 and older do not contain this code and are not affected by this vulnerability. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-121. Red Hat fixing advisory: RHSA-2026:49508. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat package: gstreamer1-plugins-good.
High [CVE-2026-55995] Denial of Service via double-free in iSNS attribute decoder
A Double Free vulnerability in open-iscsi allows an unauthenticated MITM attacker to cause DoS. This issue affects open-iscsi: from? through 56718d4e9d1a4f51c30697b5c0534144bb41c9bb. An unauthenticated man-in-the-middle (MITM) attacker can exploit a double-free vulnerability in the iSNS attribute decoder. This can lead to a denial of service (DoS) condition, making the affected system unavailable. The vulnerability is network-exploitable without requiring user interaction or authentication, posing a significant risk to the availability of iSNS services in environments where the `isns-utils` package is deployed and the iSNS service is exposed. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-763. 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 7 more.
High [CVE-2026-67214] Denial of Service via negative size input in non-secure module functions
nanoid (Nano ID) before 5.1.16 contains an infinite loop in the customAlphabet and nanoid functions of its non-secure module (nanoid/non-secure). When these functions are given a negative size, the loop counter is decremented from a negative value and never reaches its termination condition, spinning indefinitely and hanging the calling thread. An application that passes an unvalidated, attacker-controlled negative size to these functions is exposed to a denial-of-service condition. A flaw was found in nanoid (Nano ID), a JavaScript library used for generating unique identifiers. This vulnerability allows an attacker to cause a Denial of Service (DoS) by providing a negative size input to the customAlphabet or nanoid functions within the library's non-secure module. When a negative size is provided, these functions enter an infinite loop, causing the application to hang indefinitely and disrupting service availability. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-839. Affected products named by the advisory: multicluster engine for Kubernetes 2.17; multicluster engine for Kubernetes 2.8; multicluster engine for Kubernetes 2.9; Red Hat Advanced Cluster Management for Kubernetes 2.11; and 35 more.
High [CVE-2026-44944] Authentication bypass in iscsiuio control socket
An Incorrect Authorization vulnerability in open-iscsi allows unprivilidged local users to use the isscsiuio control socket. This issue affects open-iscsi: from? through 668ca1df9c9a1e9bdd5c999ae1d67c9c8909237e. This enables unauthorized access to the control socket, potentially leading to system compromise or disruption of iSCSI (Internet Small Computer System Interface) operations. This could lead to unauthorized access and manipulation of iSCSI sessions, potentially compromising data confidentiality, integrity, and availability on systems where iSCSI is configured. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-1220. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat fixing advisory: RHSA-2026:53845, RHSA-2026:53844, RHSA-2026:62029, RHSA-2026:60427, RHSA-2026:60428. Affected products named by the advisory: Red Hat package: iscsi-initiator-utils.