CVE-2026-74424
Vulnerability Scoring
Analysis In Progress
CVE-2026-74424 Vulnerability Analysis & Exploit Details
CVE-2026-74424
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2026-74424 Details
Status: Received on 15 Aug 2026, 06:22 UTC
Published on: 15 Aug 2026, 06:22 UTC
CVSS Release:
CVE-2026-74424 Vulnerability Summary
CVE-2026-74424: In the Linux kernel, the following vulnerability has been resolved: fbcon: fix NULL pointer dereference for a console without vc_data fbcon_new_modelist() runs when a framebuffer's modelist changes. For each console mapped to it with fb_display[i].mode set, it reads vc_cons[i].d and passes the vc_num to fbcon_set_disp(). This assumes a console with a mode set has a vc_data, but it can be NULL. fbcon_set_disp() sets fb_display[i].mode before it checks vc_data, and fbcon_deinit() leaves the mode set after the vc_data is freed. fbcon_new_modelist() then dereferences the NULL vc_data. Keep fb_display[i].mode set only while the console has a vc_data. Check vc_data before setting the mode in fbcon_set_disp(), and clear the mode in fbcon_deinit(). The existing mode check in fbcon_new_modelist() then skips such consoles.
Assessing the Risk of CVE-2026-74424
Access Complexity Graph
The exploitability of CVE-2026-74424 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-2026-74424
No exploitability data is available for CVE-2026-74424.
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-2026-74424, 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-2026-74424, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2026-74424 does not compromise confidentiality.
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Integrity:
None
CVE-2026-74424 does not impact data integrity.
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Availability:
None
CVE-2026-74424 does not affect system availability.
CVE-2026-74424 References
External References
- https://git.kernel.org/stable/c/5fae9a928482d4845bca169a3a098789203a1ca4
- https://git.kernel.org/stable/c/6617df8c246311c82cebf061a4cee55b9df60922
- https://git.kernel.org/stable/c/8e9b8b008f4036df0318870c5d754134ff1b94cc
- https://git.kernel.org/stable/c/9b783b7e03dc78ec102edf618259a2b55911fc6a
- https://git.kernel.org/stable/c/ac970358c5ca0775841bd2a56ce15dc464b99003
- https://git.kernel.org/stable/c/b134ad2f7c06b3c1098dcc95008e2045ff4b49b2
- https://git.kernel.org/stable/c/cc4382dc5134826a3936a6b08de17f7dc7abe232
CWE Common Weakness Enumeration
Unknown
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