CVE-2026-74711
Linux kernel hwmon pmbus type confusion causes OOB read, risking kernel crash or info leak.
Is CVE-2026-74711 being exploited?
Not confirmed. CVE-2026-74711 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 0.14% probability of exploitation in the next 30 days.
How severe is CVE-2026-74711?
CVE-2026-74711 is rated High with a CVSS score of 8.4. 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-2026-74711?
Yes. A fix has been recorded for CVE-2026-74711. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-74711 affect?
CVE-2026-74711 affects Linux kernel (hwmon/pmbus driver - drivers/hwmon/pmbus), Devices using pmbus-enabled kernel builds. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-74711?
Update kernel to vendor-patched release and reboot affected systems.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Type confusion in pmbus_notify can cause slab out-of-bounds reads, enabling kernel memory disclosure, crashes, or potential local privilege escalation.
Patch when possible
- affected>= f469bde9afd136598a0c4edc054296e6046f90ee and < 821f6416e69782fa662aff94b5ea52c943042790
- affected>= f469bde9afd136598a0c4edc054296e6046f90ee and < 0b121de89a99c54bcf516999b04e8531c84f08d5
- affected>= f469bde9afd136598a0c4edc054296e6046f90ee and < 59bd68ab05a8f9c9a60b6ec44682084184803ff4
- affected6.4
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.