CVE-2025-71111None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: hwmon: (w83791d) Convert macros to functions to avoid TOCTOU The macro FAN_FROM_REG evaluates its arguments multiple times. When used in lockless contexts involving sh…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 19.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
In the Linux kernel, the following vulnerability has been resolved:
hwmon: (w83791d) Convert macros to functions to avoid TOCTOU
The macro FAN_FROM_REG evaluates its arguments multiple times. When used in lockless contexts involving shared driver data, this leads to Time-of-Check to Time-of-Use (TOCTOU) race conditions, potentially causing divide-by-zero errors.
Convert the macro to a static function. This guarantees that arguments are evaluated only once (pass-by-value), preventing the race conditions.
Additionally, in store_fan_div, move the calculation of the minimum limit inside the update lock. This ensures that the read-modify-write sequence operates on consistent data.
Adhere to the principle of minimal changes by only converting macros that evaluate arguments multiple times and are used in lockless contexts.
Linux >= 9873964d6eb24bd0205394f9b791de9eddbcb855 < 3dceb68f6ad33156032ef4da21a93d84059cca6dLinux >= 9873964d6eb24bd0205394f9b791de9eddbcb855 < bf5b03227f2e6d4360004886d268f9df8993ef8fLinux >= 9873964d6eb24bd0205394f9b791de9eddbcb855 < f2b579a0c37c0df19603d719894a942a295f634aLinux >= 9873964d6eb24bd0205394f9b791de9eddbcb855 < f94800fbc26ccf7c81eb791707b038a57aa39a18Linux >= 9873964d6eb24bd0205394f9b791de9eddbcb855 < a9fb6e8835a22f5796c1182ed612daed3fd273afLinux >= 9873964d6eb24bd0205394f9b791de9eddbcb855 < c8cf0c2bdcccc6634b6915ff793b844e12436680Linux >= 9873964d6eb24bd0205394f9b791de9eddbcb855 < 670d7ef945d3a84683594429aea6ab2cdfa5ceb4Linux 2.6.18Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-99118Nonedrm/i915/dmc: Harden DMC firmware payload parsing
CVE-2026-99117Nonenet: bridge: mcast: don't truncate the port group walk on teardown
CVE-2026-99121Noneipv4: avoid divide by zero in fib_rebalance
CVE-2026-99120NoneKVM: x86/mmu: Cope with the SS bit being set in #NPF exit codes
CVE-2026-99119Nonedrm/amdgpu/userq: actually validate userq BOs
CVE-2026-99123Nonevsock/virtio: validate packet source for connected sockets