CVE-2026-23017 Vulnerability Analysis & Exploit Details

CVE-2026-23017
Vulnerability Scoring

Analysis In Progress

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-2026-23017 Details

Status: Awaiting Analysis

Last updated: 🕟 03 Feb 2026, 16:44 UTC
Originally published on: 🕛 31 Jan 2026, 12:16 UTC

Time between publication and last update: 3 days

CVSS Release:

CVE-2026-23017 Vulnerability Summary

CVE-2026-23017: In the Linux kernel, the following vulnerability has been resolved: idpf: fix error handling in the init_task on load If the init_task fails during a driver load, we end up without vports and netdevs, effectively failing the entire process. In that state a subsequent reset will result in a crash as the service task attempts to access uninitialized resources. Following trace is from an error in the init_task where the CREATE_VPORT (op 501) is rejected by the FW: [40922.763136] idpf 0000:83:00.0: Device HW Reset initiated [40924.449797] idpf 0000:83:00.0: Transaction failed (op 501) [40958.148190] idpf 0000:83:00.0: HW reset detected [40958.161202] BUG: kernel NULL pointer dereference, address: 00000000000000a8 ... [40958.168094] Workqueue: idpf-0000:83:00.0-vc_event idpf_vc_event_task [idpf] [40958.168865] RIP: 0010:idpf_vc_event_task+0x9b/0x350 [idpf] ... [40958.177932] Call Trace: [40958.178491] <TASK> [40958.179040] process_one_work+0x226/0x6d0 [40958.179609] worker_thread+0x19e/0x340 [40958.180158] ? __pfx_worker_thread+0x10/0x10 [40958.180702] kthread+0x10f/0x250 [40958.181238] ? __pfx_kthread+0x10/0x10 [40958.181774] ret_from_fork+0x251/0x2b0 [40958.182307] ? __pfx_kthread+0x10/0x10 [40958.182834] ret_from_fork_asm+0x1a/0x30 [40958.183370] </TASK> Fix the error handling in the init_task to make sure the service and mailbox tasks are disabled if the error happens during load. These are started in idpf_vc_core_init(), which spawns the init_task and has no way of knowing if it failed. If the error happens on reset, following successful driver load, the tasks can still run, as that will allow the netdevs to attempt recovery through another reset. Stop the PTP callbacks either way as those will be restarted by the call to idpf_vc_core_init() during a successful reset.

Assessing the Risk of CVE-2026-23017

Access Complexity Graph

The exploitability of CVE-2026-23017 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-2026-23017

No exploitability data is available for CVE-2026-23017.

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-2026-23017, 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-2026-23017, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: None
CVE-2026-23017 does not compromise confidentiality.
Integrity: None
CVE-2026-23017 does not impact data integrity.
Availability: None
CVE-2026-23017 does not affect system availability.

CVE-2026-23017 References

External References

CWE Common Weakness Enumeration

Unknown

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