Red Hat Linux Security Advisories & Vulnerabilities
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Latest Red Hat advisories
High [CVE-2025-5791] Users: `root` appended to group listings
A flaw was found in the user's crate for Rust. This vulnerability allows privilege escalation via incorrect group listing when a user or process has fewer than exactly 1024 groups, leading to the erroneous inclusion of the root group in the access list. This erroneous behavior enables unauthorized processes or users to gain elevated privileges, compromising system confidentiality and integrity. Red Hat severity: Important — CVSS 7.1 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N). Weakness: CWE-266. Affected Red Hat products: Red Hat OpenShift sandboxed containers 1.1; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4; Red Hat Trusted Profile Analyzer. Will not fix / out of support: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4. Red Hat fixing advisory: RHSA-2025:12359. Affected products named by the advisory: Red Hat package: rust-ssh-key-dir; Red Hat package: rust-afterburn.
Medium [CVE-2025-0620] Samba: smbd doesn't pick up group membership changes when re-authenticating an expired smb session
A flaw was found in Samba. The smbd service daemon does not pick up group membership changes when re-authenticating an expired SMB session. This issue can expose file shares until clients disconnect and then connect again. Red Hat severity: Moderate — CVSS 4.9 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-552. 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: samba.
Medium [CVE-2025-4598] race condition that allows a local attacker to crash a suid program and gain read access to the resulting core dump
A vulnerability was found in systemd-coredump. This flaw allows an attacker to force a SUID process to crash and replace it with a non-SUID binary to access the original's privileged process coredump, allowing the attacker to read sensitive data, such as /etc/shadow content, loaded by the original process. A SUID binary or process has a special type of permission, which allows the process to run with the file owner's permissions, regardless of the user executing the binary. This allows the process to access more restricted data than unprivileged users or processes would be able to. If the attacker wins the race condition, they gain access to the original's SUID process coredump file. This flaw was rated as having a severity of Moderate due to the complexity to exploit this flaw. The attacker needs to setup a way to win the race condition and have an unprivileged local account to successfully exploit this vulnerability. Red Hat severity: Moderate — CVSS 4.7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-364. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat Ceph Storage 7; Red Hat Ceph Storage 8; Red Hat Discovery 2; Red Hat Insights proxy 1.5; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat OpenShift Container Platform 4. Affected products named by the advisory: Red Hat package: systemd.
High [CVE-2025-5222] stack buffer overflow in the srbroot::addtag function
A stack buffer overflow was found in Internationl components for unicode (ICU ). While running the genrb binary, the 'subtag' struct overflowed at the SRBRoot::addTag function. This issue may lead to memory corruption and local arbitrary code execution. Red Hat severity: Moderate — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:N/UI:R/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 Enterprise Linux 9.0 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat OpenShift Container Platform 4.13; Red Hat OpenShift Container Platform 4.14; Red Hat OpenShift Container Platform 4.15; 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 Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2025:11888, RHSA-2025:12083, RHSA-2025:12333, RHSA-2025:12331, RHSA-2025:12332, RHSA-2026:65839, RHSA-2026:56786, RHSA-2026:56911, RHSA-2026:56853, RHSA-2026:60019, RHSA-2026:54544, RHSA-2026:54553, RHSA-2026:54581.
High [CVE-2025-48798] multiple use after free in xcf parser
A flaw was found in GIMP when processing XCF image files. If a user opens one of these image files that has been specially crafted by an attacker, GIMP can be tricked into making serious memory errors, potentially leading to crashes and causing use-after-free issues. This vulnerability in GIMP's XCF parser marked as Important rather than Moderate due to the nature and impact of the underlying memory management flaws—specifically, use-after-free and double-free conditions. These are not just stability issues; they are well-known, high-severity primitives that attackers often exploit to achieve arbitrary code execution. Given that GIMP is a widely used graphics application and image files are routinely exchanged, the attack vector is easily accessible and plausible through social engineering (e.g., email attachments or file downloads). Furthermore, such vulnerabilities occur during file parsing—a stage often executed automatically upon file open—minimizing user interaction and maximizing the risk. Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-416.
High [CVE-2025-48797] multiple heap buffer overflows in tga parser
A flaw was found in GIMP when processing certain TGA image files. If a user opens one of these image files that has been specially crafted by an attacker, GIMP can be tricked into making serious memory errors, potentially leading to crashes and causing a heap buffer overflow. Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-122. Affected Red Hat products: Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 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; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat Enterprise Linux 6. Will not fix / out of support: Red Hat Enterprise Linux 6. Affected products named by the advisory: Red Hat package: gimp.
High [CVE-2025-48796] stack-based buffer overflows in file-ico
A flaw was found in GIMP. The GIMP ani_load_image() function is vulnerable to a stack-based overflow. If a user opens.ANI files, GIMP may be used to store more information than the capacity allows. This flaw allows a malicious ANI file to trigger arbitrary code execution. Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-121. Affected Red Hat products: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 9. Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: gimp.
Medium [CVE-2025-5278] heap buffer under-read in gnu coreutils sort via key specification
A flaw was found in GNU Coreutils. The sort utility's begfield() function is vulnerable to a heap buffer under-read. The program may access memory outside the allocated buffer if a user runs a crafted command using the traditional key format. A malicious input could lead to a crash or leak sensitive data. The severity of this issue is considered Moderate rather than Critical because successful exploitation requires the use of the traditional key specification syntax with an exceptionally large character position value, which is uncommon in typical usage. Although the vulnerability can lead to a heap buffer overflow resulting in a read one byte before the allocated buffer, it does not enable code execution, privilege escalation, or direct compromise of data confidentiality or integrity. The impact is therefore primarily limited to potential service disruption due to application crashes. Furthermore, default RHEL configurations such as SELinux enforcement, ASLR, and memory protections reduce the likelihood of exploitation and limit the scope of any resulting impact. These safeguards, along with typical system usage patterns that do not commonly invoke the vulnerable code path, restrict exploitability in default and hardened environments.
Medium [CVE-2025-4969] Libsoup: off-by-one out-of-bounds read in find_boundary in soup-multipart.c
A vulnerability was found in the libsoup package. This flaw stems from its failure to correctly verify the termination of multipart HTTP messages. This can allow a remote attacker to send a specially crafted multipart HTTP body, causing the libsoup-consuming server to read beyond its allocated memory boundaries (out-of-bounds read). Red Hat Product Security has rated this vulnerability as with Moderate severity. Although this flaw may be exploited by an unauthenticated attacker and through the network, the attacker has little to no control over the information leaked. Additionally, the amount of bytes improperly read is low (only one byte is improperly read per attack), which makes this flaw very difficult to exploit to exfiltrate meaningful sensitive data. 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. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: libsoup3.
High [CVE-2025-4948] Libsoup: integer underflow in soup_multipart_new_from_message leading to denial of service in libsoup
A flaw was found in the soup_multipart_new_from_message() function of the libsoup HTTP library, which is commonly used by GNOME and other applications to handle web communications. The issue occurs when the library processes specially crafted multipart messages. Due to improper validation, an internal calculation can go wrong, leading to an integer underflow. This can cause the program to access invalid memory and crash. As a result, any application or server using libsoup could be forced to exit unexpectedly, creating a denial-of-service (DoS) risk. The Red Hat Product Security team has assessed the severity of this vulnerability as High, given that it can be remotely triggered without authentication or user interaction. Successful exploitation allows an attacker to crash services or applications relying on libsoup for HTTP multipart message processing. The vulnerability’s root cause is a lack of proper bounds checking that results in an integer underflow and subsequent denial-of-service. 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-191. 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 9 more.
Low [CVE-2025-4945] Libsoup: integer overflow in cookie expiration date handling in libsoup
A flaw was found in the cookie parsing logic of the libsoup HTTP library, used in GNOME applications and other software. The vulnerability arises when processing the expiration date of cookies, where a specially crafted value can trigger an integer overflow. This may result in undefined behavior, allowing an attacker to bypass cookie expiration logic, causing persistent or unintended cookie behavior. The issue stems from improper validation of large integer inputs during date arithmetic operations within the cookie parsing routines. The Red Hat Product Security team has assessed the severity of this vulnerability as Low. This assessment is based on the fact that successful exploitation requires an attacker to control or manipulate the expiration date of cookies sent from a malicious or compromised HTTP server. Additionally, the consequences of a successful attack are limited in scope affecting only the handling of cookie lifetimes within the local client instance, with no direct impact on system integrity, data confidentiality, or availability. Weakness: CWE-190. 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 10 more.
Medium [CVE-2025-4476] Libsoup: null pointer dereference in libsoup may lead to denial of service
A denial-of-service vulnerability has been identified in the libsoup HTTP client library. This flaw can be triggered when a libsoup client receives a 401 (Unauthorized) HTTP response containing a specifically crafted domain parameter within the WWW-Authenticate header. Processing this malformed header can lead to a crash of the client application using libsoup. An attacker could exploit this by setting up a malicious HTTP server. If a user's application using the vulnerable libsoup library connects to this malicious server, it could result in a denial-of-service. Successful exploitation requires tricking a user's client application into connecting to the attacker's malicious server. The Red Hat Product Security team has assessed the severity of this vulnerability as Low. This determination is based on two key factors: successful exploitation necessitates a user being deceived into connecting to a malicious and untrusted HTTP server. Furthermore, the impact of a successful attack is limited to crashing only the specific client instance actively communicating with that malicious service, preventing any widespread system-level repercussions by default. Weakness: CWE-476. 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.
Medium [CVE-2025-4478] Gnome-remote-desktop: freerdp: unauthenticated rdp packet causes segfault in freerdp leading to denial of service
A flaw was found in the FreeRDP used by Anaconda's remote install feature, where a crafted RDP packet could trigger a segmentation fault. This issue causes the service to crash and remain defunct, resulting in a denial of service. It occurs pre-boot and is likely due to a NULL pointer dereference. Rebooting is required to recover the system. The severity of this issue is assessed as moderate rather than high, primarily because successful exploitation requires the remote installation feature to be explicitly enabled by the system administrator a non-default configuration in most RHEL deployments. While impactful, this scenario is limited to specific use cases, such as unattended remote installations, and does not result in privilege escalation or arbitrary code execution. Furthermore, the flaw appears to stem from a null-pointer dereference, which generally results in a crash without introducing broader system compromise. The attack requires network access to the installer at a precise phase of its operation and is constrained by the need for a custom setup (e.g., RDP-based installs). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat package: freerdp.
High [CVE-2025-3931] Yggdrasil: local privilege escalation in yggdrasil
A flaw was found in Yggdrasil, which acts as a system broker, allowing the processes to communicate to other children's "worker" processes through the DBus component. Yggdrasil creates a DBus method to dispatch messages to workers. However, it misses authentication and authorization checks, allowing every system user to call it. One available Yggdrasil worker acts as a package manager with capabilities to create and enable new repositories and install or remove packages. This flaw allows an attacker with access to the system to leverage the lack of authentication on the dispatch message to force the Yggdrasil worker to install arbitrary RPM packages. This issue results in local privilege escalation, enabling the attacker to access and modify sensitive system data. This vulnerability qualifies as Important rather than Moderate due to its direct violation of privilege boundaries and its broad post-install attack surface. The core issue lies in the com.redhat. Yggdrasil1.Dispatch() method being exposed over the system DBus without any authentication or authorization, enabling any local unprivileged user to interface with a privileged backend (package-manager worker). By leveraging this unprotected method, an attacker can install arbitrary software, execute payloads, and gain full root access, thus achieving a complete Local Privilege Escalation (LPE).
Medium [CVE-2025-4574] Crossbeam-channel: crossbeam-channel vulnerable to double free on drop
In crossbeam-channel rust crate, the internal `Channel` type's `Drop` method has a race condition which could, in some circumstances, lead to a double-free that could result in memory corruption. 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-415. 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 OpenShift AI (RHOAI); Red Hat OpenShift Container Platform 4; Red Hat Satellite 6; Red Hat Trusted Artifact Signer; Red Hat Trusted Profile Analyzer. Will not fix / out of support: Red Hat Trusted Artifact Signer; Red Hat Trusted Profile Analyzer. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: 389-ds-base; Red Hat package: firefox; Red Hat package: rust-afterburn; Red Hat package: thunderbird; and 2 more. Affected products named by the advisory: Red Hat package: trustee-guest-components; Red Hat package: rust-coreos-installer.
Medium [CVE-2025-4432] Ring: some aes functions may panic when overflow checking is enabled in ring
A flaw was found in Rust's Ring package. A panic may be triggered when overflow checking is enabled. In the QUIC protocol, this flaw allows an attacker to induce this panic by sending a specially crafted packet. It will likely occur unintentionally in 1 out of every 2**32 packets sent or received. 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-770. 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 OpenShift Container Platform 4; Red Hat Satellite 6; Red Hat Trusted Artifact Signer; Red Hat Trusted Profile Analyzer. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: firefox; Red Hat package: gjs; Red Hat package: rpm-ostree; Red Hat package: rust; and 4 more. Affected products named by the advisory: Red Hat package: snpguest; Red Hat package: thunderbird; Red Hat package: trustee-guest-components; Red Hat package: polkit.
Medium [CVE-2025-4382] Grub2: grub allow access to encrypted device through cli once root device is unlocked via tpm
A flaw was found in systems utilizing LUKS-encrypted disks with GRUB configured for TPM-based auto-decryption. When GRUB is set to automatically decrypt disks using keys stored in the TPM, it reads the decryption key into system memory. If an attacker with physical access can corrupt the underlying filesystem superblock, GRUB will fail to locate a valid filesystem and enter rescue mode. At this point, the disk is already decrypted, and the decryption key remains loaded in system memory. This scenario may allow an attacker with physical access to access the unencrypted data without any further authentication, thereby compromising data confidentiality. Furthermore, the ability to force this state through filesystem corruption also presents a data integrity concern. This vulnerability was classified as Moderate severity by the Red Hat Product Security. For a successful attack to take place, the attacker needs to have physical access to the system and enough privileges to edit sensitive metadata in the filesystem contained in the grub's root device. Weakness: CWE-306. 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 OpenShift Container Platform 4. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: grub2.
Medium [CVE-2025-4374] incorrect privilege assignment
A flaw was found in Quay. When an organization acts as a proxy cache, and a user or robot pulls an image that hasn't been mirrored yet, they are granted "Admin" permissions on the newly created repository. Affected product named by the advisory: Red Hat Quay 3.
Medium [CVE-2025-4373] buffer underflow on glib through glib/gstring.c via function g_string_insert_unichar
A flaw was found in GLib, which is vulnerable to an integer overflow in the g_string_insert_unichar() function. When the position at which to insert the character is large, the position will overflow, leading to a buffer underwrite. The flaw is in the g_string_insert_unichar() function: when a GLib-based application inserts a character at a very large position within a GString, the position value overflows and the character is written before the start of the string's buffer, corrupting memory outside the intended buffer. Exploitation requires an attacker to influence the insertion position passed by a vulnerable application; successful exploitation could result in limited data corruption or an application crash. The Red Hat severity assessment (Moderate, CVSS 3.1 score 4.8) is consistent with the CVE.org rating. In Red Hat Enterprise Linux, the glib2 package is affected and a fix is being pursued through the standard update process for the affected streams. Fedora is also affected, with remediation delegated to the Fedora community maintainers. Weakness: CWE-124. 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 18 more.
High [CVE-2025-3501] Org.keycloak.protocol.services: keycloak hostname verification
A flaw was found in Keycloak. By setting a verification policy to 'ALL', the trust store certificate verification is skipped, which is unintended. Red Hat has rated this as an Important severity, although this configuration is not recommended, especially in production environments. Weakness: CWE-297. Affected Red Hat products: Red Hat Build of Keycloak; Red Hat build of Keycloak 26; Red Hat build of Keycloak 26.0; Red Hat build of Keycloak 26.2. Red Hat lists Red Hat Single Sign-On 7 as not affected. Red Hat fixing advisory: RHSA-2025:4336, RHSA-2025:8690, RHSA-2025:4335, RHSA-2025:8672.
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