Red Hat Linux Security Advisories & Vulnerabilities
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Latest Red Hat advisories
High [CVE-2025-7425] heap use-after-free in libxslt caused by atype corruption in xmlattrptr
A flaw was found in libxslt where the attribute type, atype, flags are modified in a way that corrupts internal memory management. When XSLT functions, such as the key() process, result in tree fragments, this corruption prevents the proper cleanup of ID attributes. As a result, the system may access freed memory, causing crashes or enabling attackers to trigger heap corruption. This heap-use-after-free vulnerability in libxslt is rated Important because it can lead to memory corruption and application crashes. The flaw arises when internal attribute metadata (atype) is modified by libxslt's xsltSetSourceNodeFlags() function during processing of result tree fragments. If the flag corruption prevents proper removal of ID references, later memory cleanup routines may operate on already-freed memory. Since libxslt is commonly used in server-side XML processing, this could result in denial-of-service or potentially facilitate code execution under certain memory reuse conditions. Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H). Weakness: CWE-416. Affected products named by the advisory: Red Hat Enterprise Linux 10; 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; and 30 more.
Medium [CVE-2025-6395] null pointer dereference in _gnutls_figure_common_ciphersuite
A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite(). Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H). Weakness: CWE-476. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat Ceph Storage 7; Red Hat Discovery 2; Red Hat Insights proxy 1.5; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat OpenShift Container Platform 4. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2025:16115, RHSA-2025:17415, RHSA-2025:16116, RHSA-2025:17361, RHSA-2025:17348, RHSA-2025:22529, RHSA-2025:19088, RHSA-2025:17181. Affected products named by the advisory: Red Hat package: gnutls.
Medium [CVE-2025-32990] Gnutls: vulnerability in gnutls certtool template parsing
A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility. When it reads certain settings from a template file, it allows an attacker to cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L). Weakness: CWE-122. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat Ceph Storage 7; Red Hat Discovery 2; Red Hat Hardened Images; Red Hat Insights proxy 1.5; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat OpenShift Container Platform 4. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2025:16115, RHSA-2025:17415, RHSA-2025:16116, RHSA-2025:17361, RHSA-2025:17348, RHSA-2025:22529, RHSA-2025:19088, RHSA-2026:7477, RHSA-2025:17181. Affected products named by the advisory: Red Hat package: gnutls.
Medium [CVE-2025-32989] vulnerability in gnutls sct extension parsing
A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a malformed SCT extension (OID 1.3.6.1.4.1.11129.2.4.2) that contains sensitive data. This issue leads to the exposure of confidential information when GnuTLS verifies certificates from certain websites when the certificate (SCT) is not checked correctly. Red Hat severity: Moderate — CVSS 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N). Weakness: CWE-295. 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 Extended Update Support; Red Hat Ceph Storage 7; Red Hat Discovery 2; Red Hat Hardened Images; Red Hat Insights proxy 1.5; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat OpenShift Container Platform 4. Red Hat lists Red Hat Enterprise Linux 8 as not affected. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2025:16115, RHSA-2025:16116, RHSA-2025:17361, RHSA-2025:17348, RHSA-2025:22529, RHSA-2025:19088, RHSA-2026:7477, RHSA-2025:17181. Affected products named by the advisory: Red Hat package: gnutls.
Medium [CVE-2025-32988] vulnerability in gnutls othername san export
A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the type-id OID is invalid or malformed, GnuTLS will call asn1_delete_structure() on an ASN.1 node it does not own, leading to a double-free condition when the parent function or caller later attempts to free the same structure. This vulnerability can be triggered using only public GnuTLS APIs and may result in denial of service or memory corruption, depending on allocator behavior. This vulnerability is rated Moderate rather than Important because, although it involves a memory management flaw (double-free) that can potentially lead to memory corruption, practical exploitation is limited by modern memory protection mechanisms and contextual constraints. The issue occurs only when processing malformed SAN otherName entries through public GnuTLS APIs—an uncommon and controlled code path in most deployments. Furthermore, exploitation for arbitrary code execution is highly dependent on allocator behavior and requires precise heap manipulation, which is non-trivial under defenses such as Address Space Layout Randomization (ASLR), Data Execution Prevention (DEP), and hardened memory allocators.
High [CVE-2025-7345] Gdk‑pixbuf: heap‑buffer‑overflow in gdk‑pixbuf
A flaw exists in gdk‑pixbuf within the gdk_pixbuf__jpeg_image_load_increment function (io-jpeg.c) and in glib’s g_base64_encode_step (glib/gbase64.c). When processing maliciously crafted JPEG images, a heap buffer overflow can occur during Base64 encoding, allowing out-of-bounds reads from heap memory, potentially causing application crashes or arbitrary code execution. The Red Hat Product Security team has rated this vulnerability as Moderate. The flaw, identified in gdk-pixbuf, allows remote attackers to trigger a denial of service by supplying a specially crafted image file. This issue stems from improper bounds handling during image decoding. While exploitable without authentication, it does not lead to data compromise or code execution. 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-120. Affected products named by the advisory: Red Hat Enterprise Linux 10; 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; and 11 more.
High [CVE-2025-5987] Libssh: invalid return code for chacha20 poly1305 with openssl backend
A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes. Red Hat Product Security Team has rated this vulnerability as having a Moderate security impact. This is due to the high complexity in exploiting this flaw. For a successful attack to take place an attacker needs to manage to exhaust the heap space to for the OpenSSL library to return the error code which wrongly match the SSH_OK return code. Red Hat severity: Moderate — CVSS 8.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-393. Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat Enterprise Linux 9.6 Extended Update Support; and 11 more.
Medium [CVE-2025-5351] Libssh: double free vulnerability in libssh key export functions
A flaw was found in the key export functionality of libssh. The issue occurs in the internal function responsible for converting cryptographic keys into serialized formats. During error handling, a memory structure is freed but not cleared, leading to a potential double free issue if an additional failure occurs later in the function. This condition may result in heap corruption or application instability in low-memory scenarios, posing a risk to system reliability where key export operations are performed. The Red Hat Product Security team has rated the severity of this issue as Moderate. The vulnerability arises from a double free condition that is only exploitable under rare and constrained scenarios such as low memory environments. Despite the restricted preconditions, the flaw still presents a stability concern for services utilizing libssh in sensitive environments. Weakness: CWE-415. Affected Red Hat products: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat OpenShift Container Platform 4. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2026:18683. Affected products named by the advisory: Red Hat package: libssh2.
Medium [CVE-2025-5372] Libssh: incorrect return code handling in ssh_kdf in libssh
A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenly return a success status even when key derivation fails. This results in uninitialized cryptographic key buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality, integrity, and availability. The Red Hat Product Security team has assessed the severity of this vulnerability as Moderate due to the combination of limited prerequisites and its impact on confidentiality, integrity, and availability. Successful exploitation could allow an attacker to initiate cryptographic operations using uninitialized keys, which may compromise secure SSH sessions. Weakness: CWE-682. Affected products named by the advisory: 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; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On; and 7 more.
Medium [CVE-2025-6017] Rhacm: users with clusterreader role can see credentials from managed-clusters
A flaw was found in Red Hat Advanced Cluster Management through versions 2.10, before 2.10.7, 2.11, before 2.11.4, and 2.12, before 2.12.4. This vulnerability allows an unprivileged user to view confidential managed cluster credentials through the UI. This information should only be accessible to authorized users and may result in the loss of confidentiality of administrative information, which could be leaked to unauthorized actors. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-359. Affected Red Hat products: Red Hat Advanced Cluster Management for Kubernetes 2. Red Hat does not currently list a fixing RHSA for this CVE.
High [CVE-2025-49520] Event-driven-ansible: authenticated argument injection in git url in eda project creation
A flaw was found in Ansible Automation Platform’s EDA component where user-supplied Git URLs are passed unsanitized to the git ls-remote command. This vulnerability allows an authenticated attacker to inject arguments and execute arbitrary commands on the EDA worker. In Kubernetes/OpenShift environments, this can lead to service account token theft and cluster access. The Red Hat Product Security team has assessed the severity of this vulnerability as Important. Although authentication is required, the flaw allows remote code execution and token theft within containerized environments like OpenShift. The vulnerability stems from a lack of input validation on user-supplied Git URLs passed to git commands. Weakness: CWE-88. Affected Red Hat products: Red Hat Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9. Red Hat fixing advisory: RHSA-2025:9986.
High [CVE-2025-49521] Event-driven-ansible: template injection via git branch and refspec in eda projects
A flaw was found in the EDA component of the Ansible Automation Platform, where user-supplied Git branch or refspec values are evaluated as Jinja2 templates. This vulnerability allows authenticated users to inject expressions that execute commands or access sensitive files on the EDA worker. In OpenShift, it can lead to service account token theft. The Red Hat Product Security team has assessed this vulnerability as Important as the flaw enables template injection via unsanitized user input into Jinja2 templates used during project setup. Successful exploitation allows command execution and sensitive data exposure on the EDA worker, including Kubernetes service tokens in containerized environments. 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-94. Affected Red Hat products: Red Hat Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9. Red Hat fixing advisory: RHSA-2025:9986.
High [CVE-2025-32462] Sudo before 1.9.17p1, when used with a sudoers file that specifies a host that is neither the current host nor ALL
Sudo before 1.9.17p1, when used with a sudoers file that specifies a host that is neither the current host nor ALL, allows listed users to execute commands on unintended machines. A privilege escalation vulnerability was found in Sudo. In certain configurations, unauthorized users can gain elevated system privileges via the Sudo host option (`-h` or `--host`). When using the default sudo security policy plugin (sudoers), the host option is intended to be used in conjunction with the list option (`-l` or `--list`) to determine what permissions a user has on a different system. However, this restriction can be bypassed, allowing a user to elevate their privileges on one system to the privileges they may have on a different system, effectively ignoring the host identifier in any sudoers rules. This vulnerability is particularly impactful for systems that share a single sudoers configuration file across multiple computers or use network-based user directories, such as LDAP, to provide sudoers rules on a system. This vulnerability is classified as a Local Privilege Escalation (LPE), meaning an attacker needs an authenticated account before they could exploit it. Due to this restriction, the severity is rated Important. Additionally, for a system to be vulnerable, it must already be in a non-default configuration.
High [CVE-2025-6032] Podman: podman missing tls verification
A flaw was found in Podman. The podman machine init command fails to verify the TLS certificate when downloading the VM images from an OCI registry. This issue results in a Man In The Middle attack. To exploit this flaw, a user needs to download an image from an untrusted OCI registry, specifically, an OCI registry with an invalid TLS certificate. Red Hat severity: Important — CVSS 8.3 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H). Weakness: CWE-295. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat OpenShift Container Platform 4.16; Red Hat OpenShift Container Platform 4.17; Red Hat OpenShift Container Platform 4.18; Red Hat OpenShift Container Platform 4.19; Red Hat OpenShift Container Platform 4.20; Red Hat OpenShift Container Platform 4. Will not fix / out of support: Red Hat OpenShift Container Platform 4. Red Hat fixing advisory: RHSA-2025:10549, RHSA-2025:10551, RHSA-2025:10550, RHSA-2025:10668, RHSA-2025:9766, RHSA-2025:11681, RHSA-2025:10295, RHSA-2025:11359, RHSA-2025:11677, RHSA-2025:9726, RHSA-2025:11363, RHSA-2025:9751, RHSA-2025:15397. Affected products named by the advisory: Red Hat package: podman.
Medium [CVE-2025-5318] out-of-bounds read in sftp_handle
A flaw was found in the libssh library in versions less than 0.11.2. An out-of-bounds read can be triggered in the sftp_handle function due to an incorrect comparison check that permits the function to access memory beyond the valid handle list and to return an invalid pointer, which is used in further processing. This vulnerability allows an authenticated remote attacker to potentially read unintended memory regions, exposing sensitive information or affect service behavior. This issue requires an attacker with valid credentials to access a server, limiting the scope to legitimate users of the SFTP service. Due to this reason, this flaw has been rated with a Moderate severity. Red Hat severity: Moderate — CVSS 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N). Weakness: CWE-125. Affected products named by the advisory: Red Hat Enterprise Linux 10; 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 20 more. Affected products named by the advisory: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Telecommunications Update Service; Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions; Red Hat Enterprise Linux 8.8 Telecommunications Update Service; and 16 more.
Medium [CVE-2025-6193] Trustyai-explainability: command injection via lmevaljob cr
A command injection vulnerability was discovered in the TrustyAI Explainability toolkit. Arbitrary commands placed in certain fields of a LMEValJob custom resource (CR) may be executed in the LMEvalJob pod's terminal. This issue can be exploited via a maliciously crafted LMEvalJob by a user with permissions to deploy a CR. Red Hat severity: Moderate — CVSS 5.9 (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L). Weakness: CWE-78. Affected Red Hat products: Red Hat OpenShift AI 2.16; Red Hat OpenShift AI (RHOAI). Red Hat fixing advisory: RHSA-2026:5807.
Critical [CVE-2025-4404] Freeipa: idm: privilege escalation from host to domain admin in freeipa
A privilege escalation from host to domain vulnerability was found in the FreeIPA project. The FreeIPA package fails to validate the uniqueness of the `krbCanonicalName` for the admin account by default, allowing users to create services with the same canonical name as the REALM admin. When a successful attack happens, the user can retrieve a Kerberos ticket in the name of this service, containing the admin@REALM credential. This flaw allows an attacker to perform administrative tasks over the REALM, leading to access to sensitive data and sensitive data exfiltration. For an attack to be successfully executed, the Kerberos ticket needs to be requested with the PAC information. This vulnerability is marked as Important rather than a Moderate one because it allows a local or authenticated attacker to escalate privileges from host-level to full domain-level administrative access within a FreeIPA-managed environment. By exploiting the lack of uniqueness enforcement on the krbCanonicalName attribute, an attacker can craft a principal with the same canonical name as the domain admin (e.g., admin@REALM) and obtain a Kerberos service ticket that includes PAC (Privilege Attribute Certificate) data. This results in the impersonation of the admin identity, granting unrestricted access to sensitive systems and data.
High [CVE-2025-49180] Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x resize, rotate and reflect (randr) extension
A flaw was found in the RandR extension, where the RRChangeProviderProperty function does not properly validate input. This issue leads to an integer overflow when computing the total size to allocate. As a result, subsequent memory operations may write outside the bounds of the allocated buffer, potentially causing memory corruption, application crashes, or arbitrary code execution under certain conditions. 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-190. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION; Red Hat Enterprise Linux 7.7 Advanced Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; and 15 more.
High [CVE-2025-49179] Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x record extension
A flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks. As a result, the server may read or write beyond intended memory bounds, leading primarily to denial of service by crashing the process, possibility of leaking memory contents or corrupting data. Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H). Weakness: CWE-190. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION; Red Hat Enterprise Linux 7.7 Advanced Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; and 15 more.
High [CVE-2025-49176] Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in big requests extension
A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking against the maximum allowed size, potentially causing an integer overflow and bypassing the size check. This computation can cause an integer overflow when a sufficiently large length value is provided, resulting in a wrapped-around total length that appears valid to the size check logic, leading to out-of-bounds memory access, successful exploitation can cause denial of service by crashing the server and may permit memory corruption, compromising system integrity and availability. Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H). Weakness: CWE-190. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION; Red Hat Enterprise Linux 7.7 Advanced Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; and 15 more. Affected products named by the advisory: 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; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 11 more.
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