CVE-2026-74554
ath12k Wi‑Fi driver OOB bitmap clear causes kernel memory corruption and DoS.
Is CVE-2026-74554 being exploited?
Not confirmed. CVE-2026-74554 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 0.20% probability of exploitation in the next 30 days.
How severe is CVE-2026-74554?
CVE-2026-74554 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-2026-74554?
Yes. A fix has been recorded for CVE-2026-74554. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-74554 affect?
CVE-2026-74554 affects Linux kernel (ath12k driver), Devices with Qualcomm WCN7850 and similar ath12k chipsets, Embedded/Android devices using affected kernels. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-74554?
Apply kernel/firmware updates that fix the ath12k driver immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker within Wi‑Fi range can trigger out‑of‑bounds clear_bit, corrupt kernel memory, cause system crash/DoS and risk privilege escalation.
Patch when possible
- affected>= ee16dcf573d5e3283fda601dd4bca6bc52251017 and < 234b5cb81e6fcc1e3b31b13deff66130be55f36e
- affected>= ee16dcf573d5e3283fda601dd4bca6bc52251017 and < 47abd2ca281531deee38a3b3770d885e270e9fc9
- affected7.0
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.