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-2026-76014] Denial of Service via null pointer dereference in wget.c
A vulnerability has been found in BusyBox up to 1.30.1. This vulnerability affects unknown code of the file networking/wget.c of the component FEATURE_WGET_TIMEOUT Handler. Such manipulation of the argument -T leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The name of the patch is 83a40bf7a93c8ac093d33ab452222dd5b9eb57ff. A patch should be applied to remediate this issue. A flaw was found in BusyBox. This occurs when the attacker manipulates the -T argument, leading to a denial of service. This vulnerability, which affects BusyBox versions up to 1.30.1, leads to a denial of service as the wget process crashes. Red Hat products shipping BusyBox versions above 1.30.1 are not affected by this vulnerability. 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-476. Affected Red Hat products: Red Hat Enterprise Linux 6. Red Hat lists Red Hat Hardened Images as not affected. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: busybox.
Medium [CVE-2026-76925] TOCTOU race condition allows symlink redirection
A flaw was found in Flatpak. A Time-of-check to time-of-use (TOCTOU) race condition exists in the `org.freedesktop. SystemHelper` component. This vulnerability occurs because a privileged `chmod` operation executes before the OSTree repository validation within the `Deploy()` function. An attacker can exploit this timing window to redirect symlinks to arbitrary files, potentially leading to unauthorized file manipulation or information disclosure. Red Hat severity: Moderate — CVSS 5.8 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L). Weakness: CWE-367. 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: flatpak.
Low [CVE-2026-76891] Denial of Service via sharkd crash
Crash in sharkd in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service A flaw was found in the sharkd component of Wireshark. A remote attacker could exploit this vulnerability, which requires user interaction and has high attack complexity, by triggering a crash. Red Hat Enterprise Linux 10 and Red Hat In-Vehicle OS ship Wireshark 4.4.2, which is within the affected range (4.4.0–4.4.17). Red Hat severity: Low — CVSS 3.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L). Weakness: CWE-248. Red Hat lists Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: wireshark.
Low [CVE-2026-76885] Denial of Service via Tektronix K12xx file parsing
Tektronix K12xx file parser crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service A flaw was found in Wireshark. This vulnerability, a buffer over-read, occurs when the Tektronix K12xx file parser processes a specially crafted file. Red Hat Enterprise Linux 6, 7, 8, and 9 ship Wireshark versions prior to the affected range and are not vulnerable. Red Hat severity: Low — CVSS 3.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L). Weakness: CWE-125. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat package: wireshark.
Low [CVE-2026-76888] Heap-based Buffer Overflow in RDP dissector leads to Denial of Service
RDP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service A flaw was found in Wireshark. A remote attacker could exploit a heap-based buffer overflow vulnerability within the RDP (Remote Desktop Protocol) dissector. By crafting a malicious RDP packet, an attacker could cause the Wireshark application to crash, leading to a denial of service. Red Hat Enterprise Linux 6, 7, 8, and 9 ship Wireshark versions prior to the affected range and are not vulnerable. Red Hat severity: Low — CVSS 3.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L). Weakness: CWE-120. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat package: wireshark.
Low [CVE-2026-76887] Denial of service via heap-based buffer overflow in dissection engine
Crash in the Wireshark dissection engine in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service A flaw was found in Wireshark. Exploitation requires a user to process a specially crafted network packet, leading to a crash of the application. Red Hat Enterprise Linux 6, 7, 8, and 9 ship Wireshark versions prior to the affected range and are not vulnerable. Red Hat severity: Low — CVSS 3.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L). Weakness: CWE-120. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat package: wireshark.
Low [CVE-2026-76884] Denial of Service via ERF file parser crash
ERF file parser crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service A flaw was found in Wireshark. A remote attacker could exploit a buffer over-read vulnerability in the ERF (Extensible Record Format) file parser. This could lead to a denial of service, making the application unavailable to legitimate users. Red Hat Enterprise Linux 6 through 9 ship Wireshark versions 1.x through 3.x, which predate the introduction of the vulnerable code in version 4.4.0 and are therefore not affected by this flaw. Red Hat severity: Low — CVSS 3.3 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L). Weakness: CWE-130. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat package: wireshark.
Critical [CVE-2026-76044] Arbitrary code execution due to a race condition in USB
Race condition in USB in Google Chrome prior to 151.0.7922.169 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High) This could potentially lead to the execution of arbitrary code outside of the browser's security sandbox, allowing the attacker to gain further control over the system. Exploitation requires a compromised renderer process and user interaction with a specially crafted HTML page, enabling a significant security bypass. Red Hat severity: Important — CVSS 9 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H). Weakness: CWE-368.
Critical [CVE-2026-18963] Unauthenticated account takeover via reset-credentials flow bypass
A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the required email verification link. This can result in the attacker gaining full control over target user accounts by directly setting new credentials. The Red Hat Product Security team has assessed the severity of this vulnerability as Critical, given that it can be exploited by an unauthenticated remote attacker without any user interaction. Successful exploitation allows an attacker to gain full access to any user account by bypassing the email verification step in the password recovery process. The vulnerability's root cause is improper state validation within the reset-credentials authentication flow. Weakness: CWE-640. Affected Red Hat products: Red Hat build of Keycloak 26.4; Red Hat build of Keycloak 26.4.15; Red Hat build of Keycloak 26.6; Red Hat build of Keycloak 26.6.6. Red Hat lists Red Hat JBoss Enterprise Application Platform Expansion Pack; Red Hat Single Sign-On 7 as not affected. Red Hat fixing advisory: RHSA-2026:56519, RHSA-2026:56520, RHSA-2026:56524, RHSA-2026:56523.
Critical [CVE-2026-12564] Automation-controller: automation-controller: kubernetes service account token exfiltration via hashicorp vault credential ssrf
A flaw was found in the AAP Controller's HashiCorp Vault credential plugin. An authenticated attacker with credential-creation privileges can exfiltrate the service account token, gaining Kubernetes API access to the control plane namespaces with full pod CRUD and secret read permissions, including database credentials and the Django SECRET_KEY. The vulnerability is particularly impactful in AAP Cloud (managed service) environments where the Kubernetes control plane is managed by Red Hat and tenant isolation is a security boundary. On-premise deployments are also affected, though the impact is lower since the administrator already has access to the infrastructure. The vulnerable code path exists in all AAP versions that ship the hashivault credential plugin with kubernetes_role authentication support. Red Hat severity: Critical — CVSS 9.6 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N). Weakness: CWE-918. Affected Red Hat products: Red Hat Ansible Automation Platform 2. Red Hat does not currently list a fixing RHSA for this CVE.
High [CVE-2026-76038] Remote code execution via type confusion in crafted HTML.
Type confusion in V8 in Google Chrome prior to 151.0.7922.169 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High) A flaw was found in V8, the open-source JavaScript engine used in Google Chrome. Exploitation occurs when a user visits a specially crafted HTML page, leading to potential compromise of the affected system. This vulnerability is rated as Important. A type confusion flaw in the V8 JavaScript engine can lead to remote code execution when processing a specially crafted HTML page. Exploitation requires user interaction, as an attacker must entice a user to visit a malicious website. This primarily impacts desktop environments and applications that render untrusted web content, such as Chromium and applications embedding QtWebEngine. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-843.
High [CVE-2026-76041] Information leak in Skia
Information leak in Skia in Google Chrome prior to 151.0.7922.169 allowed a remote attacker to potentially bypass web origin policy via a crafted HTML page. (Chromium security severity: High) An information leak flaw was found in the Skia 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-346. Affected Red Hat products: 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: webkitgtk4; Red Hat package: webkit2gtk3.
High [CVE-2026-76047] Arbitrary code execution via type confusion in V8
Type confusion in V8 in Google Chrome prior to 151.0.7922.169 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High) A flaw was found in chromium-browser. A remote attacker could exploit a type confusion vulnerability in the V8 JavaScript engine by enticing a user to visit a specially crafted HTML page. This could allow the attacker to execute arbitrary code within the browser's sandbox, potentially compromising the user's system. Exploitation requires user interaction, specifically visiting a specially crafted HTML page, but the potential for remote code execution elevates its severity. 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-843.
High [CVE-2026-76045] Arbitrary code execution via use-after-free
Use after free in WebGL in Google Chrome prior to 151.0.7922.169 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High) This can be achieved by enticing a user to visit a specially crafted HTML page, leading to a high-severity security risk. This vulnerability is rated Important as it allows a remote attacker to execute arbitrary code within the browser's sandbox by enticing a user to visit a specially crafted HTML page. The use-after-free flaw in WebGL affects the Chromium browser, which is available in Red Hat Community Projects. Successful exploitation could lead to significant impact on confidentiality, integrity, and availability. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-825.
High [CVE-2026-76043] Arbitrary code execution via incorrect calculation in HTML processing
Incorrect calculation in V8 in Google Chrome prior to 151.0.7922.169 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High) This could lead to arbitrary code execution within the browser's sandbox environment. Exploitation requires user interaction, where a remote attacker could entice a user to visit a specially crafted HTML page. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-190.
High [CVE-2026-76039] Information disclosure via incorrect reference resolution
Incorrect reference resolution in Core in Google Chrome on on Android prior to 151.0.7922.169 allowed a remote attacker leveraging social engineering to obtain sensitive information via a crafted HTML page. (Chromium security severity: High) A flaw was found in Chromium, specifically in its Core component on Android. By leveraging social engineering and a specially crafted HTML page, an attacker could exploit this flaw to disclose confidential data. While exploitation requires user interaction via social engineering and a crafted HTML page, successful attacks could expose sensitive user information in Red Hat environments utilizing Chromium-based browsers. Red Hat severity: Important — CVSS 7.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N). Weakness: CWE-386.
High [CVE-2026-76040] Arbitrary code execution via use-after-free vulnerability
Use after free in Browser in Google Chrome on on Mac prior to 151.0.7922.169 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High) This could lead to a complete compromise of the affected system. Exploitation requires social engineering to entice a user to visit a specially crafted HTML page, making user interaction a prerequisite for a successful attack. 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-825.
High [CVE-2026-76037] Arbitrary Code Execution via Link Following
Link following in CredentialProvider in Google Chrome on on Windows prior to 151.0.7922.169 allowed a local attacker to potentially execute arbitrary code outside the sandbox via a local program. (Chromium security severity: High) This vulnerability affects Chromium-based browsers and applications utilizing QtWebEngine in Red Hat Community Projects. Exploitation requires user interaction, such as clicking a malicious link. 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-59.
High [CVE-2026-76033] Site isolation bypass due to inappropriate CORS implementation
Inappropriate implementation in CORS in Google Chrome prior to 151.0.7922.169 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High) A flaw was found in Google Chrome's handling of Cross-Origin Resource Sharing (CORS). This could allow the attacker to bypass site isolation, a security feature designed to prevent malicious websites from accessing data from other websites, potentially leading to unauthorized data access. This could lead to unauthorized access to sensitive data from other websites, significantly undermining a core browser security boundary. Red Hat severity: Important — CVSS 8.7 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N). Weakness: CWE-653.
High [CVE-2026-76036] Dawn in Google Chrome: Arbitrary code execution via crafted HTML page
Buffer overflow in Dawn in Google Chrome on on Android prior to 151.0.7922.169 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical) This can be achieved by enticing a user to visit a specially crafted HTML page. This occurs when a user visits a specially crafted HTML page, leading to a buffer overflow. The impact is significant due to the potential for arbitrary code execution, even though user interaction is required. 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-120.