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CVE-2026-72395— hwmon: (pmbus) Fix passing events to regulator core

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 6.6.143版本至6.6.145之前版本、6.12.92版本至6.12.97之前版本、6.18.21版本至6.18.40之前版本、6.19.11版本至6.20之前版本和7.0版本至7.1.5之前版本存在安全漏洞，该漏洞源于使用atomic_or批处理多个调节器事件并将组合位掩码传递给regulator_notifier_call_chain，导致regulator_handle_critical函数无法匹配

CVSS 7.1 · High EPSS 0.18% · P7

Affected Version Matrix 17

VendorProduct Version RangeStatus
Linux Linux b26849cffaa7c43355b82e9bef3725e786973a1a< 2106bf4056858fcce3624e0c51f6fee4d41d3f2f affected
acf04e2863132f6d9222f71f3a76fb9782cbe061< 48fe43666950efefb7ac5fbdc012c1b3604096bf affected
4e9d723d9f198b86f6882a84c501ba1f39e8d055< 489291b6b56978cc50d34e8e13f9636ea296ba8a affected
754bd2b4a084b90b5e7b630e1f423061a9b9b761< b0ff6b6ae9c5183ef701ece7016698bde5a5bfba affected
754bd2b4a084b90b5e7b630e1f423061a9b9b761< 9ef7dacd44216bf5ea05c8aef49eba4d145f4047 affected
2c77ae315f3ce9d2c8e1609be74c9358c1fe4e07 affected
6.6.143< 6.6.145 affected
6.12.92< 6.12.97 affected
… +9 more rows
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I. Basic Information for CVE-2026-72395

Vulnerability Information
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Vulnerability Title
hwmon: (pmbus) Fix passing events to regulator core
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: hwmon: (pmbus) Fix passing events to regulator core Sashiko reports: Commit 754bd2b4a084 ("hwmon: (pmbus/core) Protect regulator operations with mutex") introduced a worker to batch regulator events over time using atomic_or(). The delayed worker then passes the combined bitmask unmodified to regulator_notifier_call_chain(). The core regulator subsystem's regulator_handle_critical() function evaluates the event parameter using a strict switch statement. If multiple distinct faults occur before the worker runs (e.g., REGULATOR_EVENT_UNDER_VOLTAGE | REGULATOR_EVENT_OVER_CURRENT), the combined bitmask fails to match any case. This leaves the reason as NULL and completely bypasses the critical hw_protection_trigger(). Fix the problem by passing events bit by bit to the regulator event handler.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 6.6.143版本至6.6.145之前版本、6.12.92版本至6.12.97之前版本、6.18.21版本至6.18.40之前版本、6.19.11版本至6.20之前版本和7.0版本至7.1.5之前版本存在安全漏洞，该漏洞源于使用atomic_or批处理多个调节器事件并将组合位掩码传递给regulator_notifier_call_chain，导致regulator_handle_critical函数无法匹配
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux b26849cffaa7c43355b82e9bef3725e786973a1a ~ 2106bf4056858fcce3624e0c51f6fee4d41d3f2f -
Linux Linux 7.0 -

II. Public POCs for CVE-2026-72395

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III. Intelligence Information for CVE-2026-72395

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Patches & Fixes for CVE-2026-72395 (5)

Same Patch Batch · Linux · 2026-08-15 · 844 CVEs total

CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72472 9.8 CRITICAL nfs: use nfsi->rwsem to protect traversal of the file lock list
CVE-2026-74428 9.8 CRITICAL rxrpc: Fix double unlock in rxrpc_recvmsg()
CVE-2026-72473 9.8 CRITICAL xprtrdma: Decouple req recycling from RPC completion
CVE-2026-72098 9.8 CRITICAL dm-verity: fix buffer overflow in FEC calculation
CVE-2026-74433 9.8 CRITICAL rxrpc: Fix UAF in rxgk_issue_challenge()
CVE-2026-74434 9.8 CRITICAL rxrpc: Don't move a peeked OOB message onto the pending queue
CVE-2026-72299 9.8 CRITICAL tipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-74436 9.8 CRITICAL rxrpc: serialize kernel accept preallocation with socket teardown
CVE-2026-72249 9.8 CRITICAL netfilter: flowtable: use dst in this direction when pushing IPIP header
CVE-2026-72251 9.8 CRITICAL netfilter: nf_nat_sip: reload possible stale data pointer
CVE-2026-72130 9.8 CRITICAL nvmet-auth: reject short AUTH_RECEIVE buffers
CVE-2026-72248 9.8 CRITICAL netfilter: flowtable: support IPIP tunnel with direct xmit

Showing top 20 of 844 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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