EUVD-2026-39853
GHSA-36x8-5j9r-qw5f
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Local access with low privileges required to trigger TX path; availability-only impact via kernel panic; no confidentiality or integrity loss.
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
5DescriptionNVD
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7925: prevent NULL pointer dereference in mt7925_tx_check_aggr()
Move the NULL check for 'sta' before dereferencing it to prevent a possible crash.
AnalysisAI
NULL pointer dereference in the Linux kernel's mt76/mt7925 WiFi driver crashes the kernel when the 'sta' pointer is dereferenced before a NULL check in mt7925_tx_check_aggr(). Systems with MediaTek mt7925 WiFi hardware running affected kernel versions are exposed to a local denial-of-service via kernel panic. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) local access with low-privilege user credentials (PR:L per CVSS vector); (2) target system must have MediaTek mt7925 WiFi hardware with the mt7925 driver loaded and active; (3) kernel version must fall within the affected commit range post-44eb173bdd4f1775e13fce483d9e44ea8929717f and prior to the respective stable-branch fix commits. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is limited despite the High availability impact in the CVSS score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A local user with a standard shell account on a laptop equipped with a MediaTek mt7925 WiFi adapter triggers a transmit path operation - such as sustained high-throughput traffic or a rapid connect/disconnect cycle - that causes a NULL 'sta' pointer to reach mt7925_tx_check_aggr(). The kernel dereferences the pointer, generating a NULL pointer exception that results in a kernel panic and immediate system reboot or hang. … |
| Remediation | Update to a patched stable kernel release: Linux 6.12.91, 6.18.33, 7.0.10, or 7.1. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-476 – NULL Pointer Dereference
View allSame technique Denial Of Service
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External POC / Exploit Code
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