CVE-2026-74412
Kernel rtw88 driver type mix-up causes memory corruption via PCI AER handlers.
Is CVE-2026-74412 being exploited?
Not confirmed. CVE-2026-74412 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-2026-74412?
CVE-2026-74412 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-2026-74412?
Yes. A fix has been recorded for CVE-2026-74412. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-74412 affect?
CVE-2026-74412 affects Linux kernel (rtw88 Wi‑Fi driver), Systems using Realtek rtw88 PCIe Wi‑Fi devices. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-74412?
Apply vendor/kernel patch or update kernel and reboot affected hosts.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Kernel memory corruption via PCI AER handlers; malicious/misconfigured PCI device can cause crashes (DoS) or potential kernel privilege escalation/RCE.
Patch when possible
- affected>= cdb82c80b9349ed1d9ce6b49856128e04f4effc9 and < 1ef3d1338d94ec41f58fbfb6ba7742a27ea61d89
- affected>= cdb82c80b9349ed1d9ce6b49856128e04f4effc9 and < d7920797f721f944861f3c48ffb2b73f84b631fe
- affected>= cdb82c80b9349ed1d9ce6b49856128e04f4effc9 and < 706183dbef4a79d120d4e928f693bea50df496f8
- affected6.17
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.