CVE-2026-74323
Linux mt7996 Wi‑Fi driver token leak may cause transmit resource exhaustion and DoS.
Is CVE-2026-74323 being exploited?
Not confirmed. CVE-2026-74323 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.24% probability of exploitation in the next 30 days.
How severe is CVE-2026-74323?
CVE-2026-74323 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-74323?
Yes. A fix has been recorded for CVE-2026-74323. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-74323 affect?
CVE-2026-74323 affects Linux kernel mt76 driver, MediaTek mt7996 Wi‑Fi chips, Devices using mt7996-based Wi‑Fi (routers, laptops, embedded). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-74323?
Update Linux kernel or vendor firmware to patched version ASAP
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Leaked TX tokens can exhaust transmit resources, causing Wi‑Fi tx failures or kernel-level DoS; attacker can trigger via link lookup failures.
Patch when possible
- affected>= 7ef0c7ad735b0c38140259519a3f165bee2b857c and < 06e65d6cf80490bc0457d339595d1ed5a89e8899
- affected>= 7ef0c7ad735b0c38140259519a3f165bee2b857c and < fa0e9aa92a7bc97fc42014c5efaaf1278fa92723
- affected>= 7ef0c7ad735b0c38140259519a3f165bee2b857c and < 831074096d0450308357271fc0ffd3f600a2487e
- affected6.18
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.