Red Hat Linux Security Advisories & CVEs
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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
Medium [CVE-2026-72745] Information disclosure and memory corruption via malformed Kerberos GSS Wrap token
FreeRDP before 3.30.0 contains an out-of-bounds vulnerability in kerberos_DecryptMessage() (winpr/libwinpr/sspi/Kerberos/kerberos.c). The 16-bit EC (extra count) field of a peer-supplied GSS Wrap token (RFC 4121) is used directly in pointer arithmetic to locate the encrypted regions without being bounds-checked, while only RRC and the total buffer length are validated. A malicious peer (server or client) can supply a large EC value (up to 0xFFFF) during CredSSP/NLA authentication, moving the decrypt operation's base pointers past the end of the ~60-byte token buffer. Because the AES-CTS-HMAC enctypes decrypt in place before the HMAC integrity check, this results in an out-of-bounds read and in-place out-of-bounds write, potentially leading to information disclosure, memory corruption, or denial of service. A flaw was found in FreeRDP. By supplying a large 'extra count' (EC) value in a Kerberos GSS Wrap token, an attacker can cause the decryption operation to access memory outside of its intended buffer. CVE-2026-72745 has been rejected as a duplicate of CVE-2026-73242 (ref: ). Red Hat severity: Moderate — CVSS 6.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H). Weakness: CWE-823. Red Hat lists 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 as not affected.
Medium [CVE-2026-33922] Arbitrary file deletion via path traversal in Offline archives functionality
A path traversal vulnerability was discovered in the Offline archives functionality of the local web interface due to insufficient validation of an input parameter. A local user with administrative credentials for the web interface could submit an archive name containing traversal sequences and delete arbitrary files reachable by the Arc process, which runs with administrative privileges on the host. A flaw was found in Arc. A local user with administrative credentials can exploit this by submitting an archive name containing special characters, allowing them to delete arbitrary files on the system. The Arc process runs with administrative privileges, leading to a significant impact on system integrity and availability. Red Hat severity: Moderate — CVSS 6 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H). Weakness: CWE-22.
Medium [CVE-2026-33921] Information disclosure and arbitrary packet sending via insecure access restrictions
The Windows installer deployed Npcap leaving its access restriction option at the insecure default value, so the driver was accessible to every local user of the host instead of being restricted to administrators only. A local user without administrative privileges could use the Npcap driver to capture the traffic reaching the host, which discloses information belonging both to the host and to other systems on the same network segment, and to send arbitrary raw packets on that segment. Red Hat severity: Moderate — CVSS 5.2 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N). Weakness: CWE-1188.
Medium [CVE-2026-71218] Unbounded peer-controlled allocation in iperf3 JSON_read allows unauthenticated remote memory exhaustion
A flaw was found in iperf3. A remote unauthenticated attacker can exploit a vulnerability in the `JSON_read()` function, which accepts a peer-controlled message length and allocates memory without an upper bound. This allows the attacker to trigger excessive memory consumption, leading to a Denial of Service (DoS) through memory exhaustion, severe slowdown, or termination of the iperf3 service. Red Hat severity: Moderate — CVSS 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). Weakness: CWE-789. Affected Red Hat products: Red Hat Enterprise Linux 10; 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: iperf3.
Medium [CVE-2026-19519] denial of service via unchecked type assertion in RPM header parser
A flaw was found in claircore's RPM package scanner. Crafted RPM header data in a container layer can cause an unchecked type assertion to panic the scanner. The panic is not recovered, causing the Clair indexer process to crash, leading to a denial of service. Red Hat Quay Clair and RHACS Scanner V4 deployments run the indexer as multiple OpenShift pods (default replica count >= 2) with automatic kubelet restart on crash. An unrecovered panic in claircore RPM header parsing terminates one indexer pod; the remaining replicas and automatic pod restart limit the impact to a temporary interruption of image indexing rather than a lasting registry or scanning outage. Availability impact is therefore Low (A:L), consistent with the precedent claircore panic-DoS flaw CVE-2026-16254 (apk parser out-of-bounds slice), which received the same CVSS vector and score. Red Hat severity: Moderate — CVSS 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L). Weakness: CWE-617. Affected Red Hat products: Red Hat Advanced Cluster Security 4; Red Hat Quay 3. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-19391] Incomplete credential redaction exposes SSSD bind passwords and Pacemaker fence credentials in uploaded archives
A flaw was found in insights-core where the password redaction layer fails to recognize credentials not keyed under the literal string 'password'. This allows SSSD LDAP bind passwords (ldap_default_authtok) and Pacemaker fence device credentials to be included in cleartext in archives uploaded to console.redhat.com. The default insights-client configuration is affected, leading to potential exposure of sensitive credentials to individuals with access to these uploaded archives. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-312. Affected Red Hat products: Pen Drive Powered by Red Hat Lightspeed; Red Hat Certification Program for Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9. Red Hat lists Red Hat Satellite 6 as not affected. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: insights-core.
Medium [CVE-2026-5304] Privilege escalation via malicious ACAP application installation
An ACAP configuration file lacks input validation, which could potentially lead to privilege escalation. This vulnerability can only be exploited if the Axis device is configured to allow the installation of unsigned ACAP applications, and if an attacker convinces the victim to install a malicious ACAP application. A flaw was found in Axis devices. Red Hat severity: Moderate — CVSS 5.7 (CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N). Weakness: CWE-266.
Medium [CVE-2026-24330] Arbitrary File Read via malicious archive deployment
A flaw was found in wildfly-core. A remote attacker, authenticated as a 'deployer' account, can import and deploy a malicious archive file from an untrusted source. This is achieved by leveraging WildFly libraries to craft a Java project that allows an HTTP POST request to upload and deploy the malicious archive. This could lead to further exploitation, such as arbitrary file read vulnerabilities. This vulnerability is rated Moderate for Red Hat products as it requires an attacker to be authenticated as a 'deployer' account. An authenticated attacker could deploy a malicious archive, potentially leading to arbitrary file read vulnerabilities. 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-434. Affected Red Hat products: Red Hat Fuse 7; Red Hat JBoss Enterprise Application Platform 7; Red Hat JBoss Enterprise Application Platform 8; Red Hat JBoss Enterprise Application Platform Expansion Pack; Red Hat Process Automation 7; Red Hat Single Sign-On 7. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-24329] Denial of Service via malformed payload injection by an authenticated administrative user.
A flaw was found in wildfly-core. A remote user authenticated as an administrative user can inject a malformed payload into the Inet Address field through the Management Model. This injection causes the server to crash and become unrecoverable, as the payload is written into the standalone.xml configuration file. Manual intervention is required to restore server operation, leading to a denial of service. Impact is limited to environments where administrative access to the management interface is granted. Red Hat severity: Moderate — CVSS 4.9 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-91. Affected Red Hat products: Red Hat Fuse 7; Red Hat JBoss Enterprise Application Platform 7; Red Hat JBoss Enterprise Application Platform 8; Red Hat JBoss Enterprise Application Platform Expansion Pack; Red Hat Process Automation 7; Red Hat Single Sign-On 7. Will not fix / out of support: Red Hat JBoss Enterprise Application Platform 8. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-62899] .NET:.NET Core:.NET Security Feature Bypass Vulnerability
Inconsistent interpretation of http requests ('http request/response smuggling') in.NET allows an unauthorized attacker to bypass a security feature over a network. This Moderate impact flaw in System. Net.HttpListener on Red Hat platforms running.NET Core allows for a security feature bypass. The vulnerability arises from incorrect parsing of the Content-Length header, potentially affecting applications that utilize HttpListener to process HTTP requests. Red Hat severity: Moderate — CVSS 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N). Weakness: CWE-444. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Hardened Images; Red Hat OpenShift Dev Spaces. Red Hat fixing advisory: RHSA-2026:54541, RHSA-2026:54590, RHSA-2026:55858, RHSA-2026:58566, RHSA-2026:58567, RHSA-2026:54538, RHSA-2026:54542, RHSA-2026:54550, RHSA-2026:54574, RHSA-2026:55856, RHSA-2026:55857, RHSA-2026:58568, RHSA-2026:58569, RHSA-2026:58570, RHSA-2026:44914, RHSA-2026:55142, RHSA-2026:55405. Affected products named by the advisory: Red Hat package: dotnet8.0; Red Hat package: dotnet9.0; Red Hat package: dotnet10.0.
Medium [CVE-2026-62900] .NET:.NET Information Disclosure Vulnerability
Improper removal of sensitive information before storage or transfer in.NET allows an unauthorized attacker to disclose information over a network. Red Hat severity: Moderate — CVSS 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-212. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Hardened Images; Red Hat OpenShift Dev Spaces. Red Hat fixing advisory: RHSA-2026:54541, RHSA-2026:54590, RHSA-2026:55858, RHSA-2026:58566, RHSA-2026:58567, RHSA-2026:54538, RHSA-2026:54542, RHSA-2026:54550, RHSA-2026:54574, RHSA-2026:55856, RHSA-2026:55857, RHSA-2026:58568, RHSA-2026:58569, RHSA-2026:58570, RHSA-2026:44914, RHSA-2026:55142, RHSA-2026:55405. Affected products named by the advisory: Red Hat package: dotnet8.0; Red Hat package: dotnet9.0; Red Hat package: dotnet10.0.
Medium [CVE-2026-6426] vhost inflight migration VMState integer type mismatch causes out-of-bounds access
A type mismatch vulnerability was found in QEMU's vhost inflight migration VMState handling. The destination buffer size is stored as a uint64_t but read by the VMS_VBUFFER load path as a signed int32_t. On little-endian hosts, a crafted incoming migration state with bit 31 set causes the value to be interpreted as negative and then implicitly converted to a very large size_t, leading qemu_get_buffer() to copy migration-stream data beyond the bounds of the mmap-backed inflight region. This can result in a crash of the QEMU process or memory corruption. Exploitation requires control of the migration producer or write access to the migration channel, combined with a destination configured to use vhost inflight migration. Red Hat severity: Low — CVSS 4.4 (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-681. 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 Enterprise Linux for NVIDIA 26; Red Hat OpenShift Container Platform 4. Will not fix / out of support: Red Hat Enterprise Linux for NVIDIA 26. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: qemu-kvm-ma.
Medium [CVE-2026-18942] feast apply CronJob runs user Python with feature-server SA — tenant code to SA token escalation
feast apply CronJob runs user Python with feature-server SA — tenant code to SA token escalation. Red Hat rates this important (CVSS 5.5). Red Hat lists fixing advisory RHSA-2026:53262 with package rhoai/odh-feature-server-rhel9:1786110051, rhoai/odh-feature-server-rhel9:1786107278. Affected products named by the advisory: Red Hat OpenShift AI 2.25; Red Hat OpenShift AI 3.4.
Medium [CVE-2026-16456] Cross-namespace secret read via NIM Account CRD confused deputy
Cross-namespace secret read via NIM Account CRD confused deputy. Red Hat rates this important (CVSS 6.5). Weakness: CWE-441. Red Hat lists fixing advisory RHSA-2026:53262 with package rhoai/odh-model-controller-rhel9:1785187158, rhoai/odh-model-controller-rhel9:1784950479, rhoai/odh-model-controller-rhel9:1785189333. Affected products named by the advisory: Red Hat OpenShift AI 3.3; Red Hat OpenShift AI 2.25; Red Hat OpenShift AI 3.4.
Medium [CVE-2026-6791] Denial of Service via stack exhaustion during tilde expansion
When expanding paths that begin with a tilde (~) followed by a username, the internal parse_tilde function extracts the username to determine the user's home directory. The implementation allocates memory for this username directly on the stack using the strndupa macro. Because the size of this allocation was determined by the length of the user-supplied input without any bounds checks, passing an excessively long username e.g. thousands of characters, forces the thread to exhaust its stack space. Thus if an application passes untrusted, attacker-controlled input to the wordexp function, an attacker can trigger a stack clash. A flaw was found in glibc. When processing paths that start with a tilde (~) followed by a username, the `wordexp` function can be forced to allocate an excessive amount of memory on the program's stack. A remote attacker could exploit this by providing a very long username, leading to a stack exhaustion and causing a denial of service (DoS) for the affected application. Red Hat severity: Moderate — CVSS 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-120. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat OpenShift Container Platform 4.
Medium [CVE-2026-6368] Process abort due to invalid memory in wordexp
Calling wordexp with WRDE_APPEND in the GNU C Library version 2.0 to version 2.43 can cause the interface to return invalid memory in the we_wordv member, which on subsequent calls to wordfree may abort the process. A flaw was found in glibc (GNU C Library). This invalid memory, when subsequently processed by wordfree, may cause the process to abort, leading to a Denial of Service (DoS). This flaw in glibc has Moderate impact, as it can lead to a denial of service. Exploitation requires an application to specifically call `wordexp` with the `WRDE_APPEND` flag, followed by a `wordfree` call, which can result in a process abort. This vulnerability affects applications that utilize this particular programming pattern. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-1341. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat OpenShift Container Platform 4. Red Hat lists Red Hat Hardened Images as not affected. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat fixing advisory: RHSA-2026:76781, RHSA-2026:76777, RHSA-2026:79281, RHSA-2026:53069. Affected products named by the advisory: Red Hat package: glibc; Red Hat package: compat-glibc.
Medium [CVE-2026-63623] Information disclosure via world-readable storage volume images during clone/convert
Information disclosure via world-readable storage volume images during clone/convert. Red Hat rates this moderate (CVSS 5.5). Weakness: CWE-732.
Medium [CVE-2026-71577] Spec-topic Read ACL leaks bootstrap kubeconfigs to all managed hubs during migration
Spec-topic Read ACL leaks bootstrap kubeconfigs to all managed hubs during migration. Red Hat rates this moderate (CVSS 6.3). Weakness: CWE-522.
Medium [CVE-2026-15060] Unprivileged users can terminate arbitrary processes
When systemd-machined >= v259 (or v258 with a custom `polkit` policy that allows `register-machine` access) is running on a desktop system, an unprivileged user logged in a desktop graphical session can kill arbitrary processes, even privileged ones. - versions older than v259 are not affected, unless unprivileged access is granted for the `register-machine` polkit action via a local, custom policy config file - versions older than v258 are not affected - unrelated to the systemd service manager (pid 1 or user session managers) - systemd-machined is not typically installed by default, and is typically in an optional, separate package (e.g.: systemd-container) - terminal-only or remote sessions (e.g.: ssh) are not affected This could lead to a denial of service or potentially allow for privilege escalation. Red Hat products are not affected by this vulnerability. Red Hat Enterprise Linux ships systemd versions well below this threshold (RHEL 7: v219, RHEL 8: v239, RHEL 9: v252, RHEL 10: v257). Red Hat severity: Moderate — CVSS 4.7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-266. Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Hardened Images; Red Hat OpenShift Container Platform 4 as not affected.
Medium [CVE-2026-18370] Heap-based buffer overflow leads to denial of service
entr is vulnerable to Heap-based buffer overflow in run_utility() function. The function allocates a fixed-size heap buffer using malloc(ARG_MAX) and copies command-line arguments into it. It advances the destination pointer based on the return value of strlcpy(), which returns the total length of the source string rather than the number of bytes written. When the buffer is exactly filled, the remaining size underflows as an unsigned size_t, causing subsequent copies to write out of bounds. This can be triggered by supplying command-line arguments whose combined length fills the buffer, or via the /_ substitution feature which expands a short token into a longer pathname at runtime. The local attacker can cause memory corruption, process abort, and denial of service. This issue was fixed in commit 2467fe0 A flaw was found in entr. The entr package is not shipped in any Red Hat product. This issue only affects the Fedora community package. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-787.