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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 0.17% · P7

Affected Version Matrix 17

VendorProductVersion RangeStatus
LinuxLinuxb26849cffaa7c43355b82e9bef3725e786973a1a< 2106bf4056858fcce3624e0c51f6fee4d41d3f2faffected
acf04e2863132f6d9222f71f3a76fb9782cbe061< 48fe43666950efefb7ac5fbdc012c1b3604096bfaffected
4e9d723d9f198b86f6882a84c501ba1f39e8d055< 489291b6b56978cc50d34e8e13f9636ea296ba8aaffected
754bd2b4a084b90b5e7b630e1f423061a9b9b761< b0ff6b6ae9c5183ef701ece7016698bde5a5bfbaaffected
754bd2b4a084b90b5e7b630e1f423061a9b9b761< 9ef7dacd44216bf5ea05c8aef49eba4d145f4047affected
2c77ae315f3ce9d2c8e1609be74c9358c1fe4e07affected
6.6.143< 6.6.145affected
6.12.92< 6.12.97affected
… +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

VendorProductAffected VersionsCPESubscribe
LinuxLinux b26849cffaa7c43355b82e9bef3725e786973a1a ~ 2106bf4056858fcce3624e0c51f6fee4d41d3f2f -
LinuxLinux 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 · 845 CVEs total

CVE-2026-7428010.0 CRITICALcrypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-7427910.0 CRITICALcrypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-7242110.0 CRITICALipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-7447510.0 CRITICALvxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-7430910.0 CRITICALvdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-7240810.0 CRITICALgeneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-7240710.0 CRITICALgeneve: validate inner network offset in geneve_gro_complete()
CVE-2026-724939.9 CRITICALnet: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-722219.8 CRITICALsunrpc: wait for in-flight TLS handshake callback when cancel loses race
CVE-2026-723239.8 CRITICALipv4: igmp: Fix potential UAF in igmp_gq_start_timer()
CVE-2026-724639.8 CRITICALxfrm: Fix dev use-after-free in xfrm async resumption
CVE-2026-720699.8 CRITICALlocking/rt: Fix the incorrect RCU protection in rt_spin_unlock()
CVE-2026-743769.8 CRITICALmd/raid10: reset read_slot when reusing r10bio for discard
CVE-2026-720659.8 CRITICALnet: mana: Validate the packet length reported by the NIC
CVE-2026-720649.8 CRITICALnet: mana: Sync page pool RX frags for CPU
CVE-2026-742559.8 CRITICALtipc: fix UAF in tipc_l2_send_msg()
CVE-2026-723399.8 CRITICALqede: fix off-by-one in BD ring consumption on build_skb failure
CVE-2026-722349.8 CRITICALbatman-adv: access unicast_ttvn skb->data only after skb realloc
CVE-2026-744959.8 CRITICALigbvf: Fix leak in TX DMA error cleanup
CVE-2026-723559.8 CRITICALnetfs: Fix barriering when walking subrequest list

Showing top 20 of 845 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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