CVE-2026-63798
Vulnerability Scoring
Analysis In Progress
CVE-2026-63798 Vulnerability Analysis & Exploit Details
CVE-2026-63798
Attack Complexity Details
-
Attack Complexity:
Attack Complexity Analysis In Progress
-
Attack Vector:
Attack Vector Under Analysis
-
Privileges Required:
None
No authentication is required for exploitation.
-
Scope:
Impact is confined to the initially vulnerable component.
-
User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2026-63798 Details
Status: Received on 19 Jul 2026, 12:16 UTC
Published on: 19 Jul 2026, 12:16 UTC
CVSS Release:
CVE-2026-63798 Vulnerability Summary
CVE-2026-63798: In the Linux kernel, the following vulnerability has been resolved: irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove The driver allocates domain generic chips using irq_alloc_domain_generic_chips() during probe and sets up chained handlers using irq_set_chained_handler_and_data(). However, on driver removal, the generic chips are not freed and the chained handlers are not removed. The generic chips remain on the global gc_list and may later be accessed by generic interrupt chip suspend, resume, or shutdown callbacks after the driver has been removed, potentially resulting in a use-after-free and kernel crash. The chained handlers that were installed in probe for peripheral and syswake interrupts are also left dangling, which can lead to spurious interrupts accessing freed memory. Fix these issues by: - Setting IRQ_DOMAIN_FLAG_DESTROY_GC flag in domain->flags, so the core code automatically removes generic chips when irq_domain_remove() is called - Clearing all chained handlers with NULL in pdc_intc_remove()
Assessing the Risk of CVE-2026-63798
Access Complexity Graph
The exploitability of CVE-2026-63798 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2026-63798
No exploitability data is available for CVE-2026-63798.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2026-63798, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2026-63798, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
-
Confidentiality:
None
CVE-2026-63798 does not compromise confidentiality.
-
Integrity:
None
CVE-2026-63798 does not impact data integrity.
-
Availability:
None
CVE-2026-63798 does not affect system availability.
CVE-2026-63798 References
External References
- https://git.kernel.org/stable/c/0405a65e4ebd9eac13a765f9f02ac05851ca5421
- https://git.kernel.org/stable/c/37738fdf2ab1e504d1c63ce5bc0aeb6452d8f057
- https://git.kernel.org/stable/c/41826e5297e67cd96a0a46fde06a5069a8ce436a
- https://git.kernel.org/stable/c/44567537a2623dcd2b4018a7f043cf8069579e5d
- https://git.kernel.org/stable/c/8176773dfceae7978b01c20b233693e072053700
- https://git.kernel.org/stable/c/83d7ec14b0938ad8cae008058fd6f912f4a9a312
- https://git.kernel.org/stable/c/b3a3831b2eb884641906fc5e46207b205b6aea13
- https://git.kernel.org/stable/c/c2c7733101bb8c0b29ac9ee41073eaf602821a59
CWE Common Weakness Enumeration
Unknown
Protect Your Infrastructure against CVE-2026-63798: Combat Critical CVE Threats
Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.
Other 5 Recently Published CVEs Vulnerabilities
- CVE-2026-16632 – A flaw has been found in boazsegev facil.io up to 0.7.4. Affected is the function websocket_on_protocol_error in the library lib/facil/http/parsers...
- CVE-2026-16631 – A vulnerability was detected in publint up to 0.1.4. This impacts the function child_process.exec of the file src/node/pack.js of the component pac...
- CVE-2026-61246 – Vulnerability in the Oracle Platform Security for Java product of Oracle Fusion Middleware (component: Centralized Thirdparty Jars). Supported ver...
- CVE-2026-60455 – Vulnerability in the Oracle Platform Security for Java product of Oracle Fusion Middleware (component: Centralized Thirdparty Jars). Supported ver...
- CVE-2026-60439 – Vulnerability in the Oracle Platform Security for Java product of Oracle Fusion Middleware (component: Centralized Thirdparty Jars). Supported ver...