CVE-2025-71111— hwmon: (w83791d) Convert macros to functions to avoid TOCTOU
Affected Version Matrix 16
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 9873964d6eb24bd0205394f9b791de9eddbcb855< 3dceb68f6ad33156032ef4da21a93d84059cca6d | affected |
9873964d6eb24bd0205394f9b791de9eddbcb855< bf5b03227f2e6d4360004886d268f9df8993ef8f | affected | ||
9873964d6eb24bd0205394f9b791de9eddbcb855< f2b579a0c37c0df19603d719894a942a295f634a | affected | ||
9873964d6eb24bd0205394f9b791de9eddbcb855< f94800fbc26ccf7c81eb791707b038a57aa39a18 | affected | ||
9873964d6eb24bd0205394f9b791de9eddbcb855< a9fb6e8835a22f5796c1182ed612daed3fd273af | affected | ||
9873964d6eb24bd0205394f9b791de9eddbcb855< c8cf0c2bdcccc6634b6915ff793b844e12436680 | affected | ||
9873964d6eb24bd0205394f9b791de9eddbcb855< 670d7ef945d3a84683594429aea6ab2cdfa5ceb4 | affected | ||
2.6.18 | affected | ||
| … +8 more rows | |||
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I. Basic Information for CVE-2025-71111
Vulnerability Information
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Vulnerability Title
hwmon: (w83791d) Convert macros to functions to avoid TOCTOU
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于宏多次求值导致TOCTOU竞争条件，可能导致除零错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-71111
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Linux · 2026-01-14 · 43 CVEs total
| CVE-2025-71113 | crypto: af_alg - zero initialize memory allocated via sock_kmalloc | |
| CVE-2025-71123 | ext4: fix string copying in parse_apply_sb_mount_options() | |
| CVE-2025-71108 | usb: typec: ucsi: Handle incorrect num_connectors capability | |
| CVE-2025-71110 | mm/slub: reset KASAN tag in defer_free() before accessing freed memory | |
| CVE-2025-71109 | MIPS: ftrace: Fix memory corruption when kernel is located beyond 32 bits | |
| CVE-2025-71105 | f2fs: use global inline_xattr_slab instead of per-sb slab cache | |
| CVE-2025-71104 | KVM: x86: Fix VM hard lockup after prolonged inactivity with periodic HV timer | |
| CVE-2025-71103 | drm/msm: adreno: fix deferencing ifpc_reglist when not declared | |
| CVE-2025-71102 | scs: fix a wrong parameter in __scs_magic | |
| CVE-2025-71106 | fs: PM: Fix reverse check in filesystems_freeze_callback() | |
| CVE-2025-71112 | net: hns3: add VLAN id validation before using | |
| CVE-2025-71114 | via_wdt: fix critical boot hang due to unnamed resource allocation | |
| CVE-2025-71115 | um: init cpu_tasks[] earlier | |
| CVE-2025-71116 | libceph: make decode_pool() more resilient against corrupted osdmaps | |
| CVE-2025-71117 | block: Remove queue freezing from several sysfs store callbacks | |
| CVE-2025-71118 | ACPICA: Avoid walking the Namespace if start_node is NULL | |
| CVE-2025-71120 | SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf | |
| CVE-2025-71119 | powerpc/kexec: Enable SMT before waking offline CPUs | |
| CVE-2025-71121 | parisc: Do not reprogram affinitiy on ASP chip | |
| CVE-2025-71122 | iommufd/selftest: Check for overflow in IOMMU_TEST_OP_ADD_RESERVED |
Showing top 20 of 43 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects - CVE-2026-43499
rtmutex: Use waiter::task instead of current in remove_waite - CVE-2026-43497
fbdev: udlfb: add vm_ops to dlfb_ops_mmap to prevent use-aft
Same vendor: Linux
- CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects - CVE-2026-43499
rtmutex: Use waiter::task instead of current in remove_waite - CVE-2026-43497
fbdev: udlfb: add vm_ops to dlfb_ops_mmap to prevent use-aft
V. Comments for CVE-2025-71111
Anonymous User
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