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CVE-2026-64301— regulator: scmi: fix of_node refcount leak in scmi_regulator_probe()

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基金会开源的一款操作系统内核。 Linux kernel 5.11版本存在安全漏洞，该漏洞源于在scmi_regulator_probe()函数中调用of_find_node_by_name()获取设备节点引用后，在错误路径上未调用of_node_put()释放引用，导致引用计数泄漏。

AI Predicted 5.5 Difficulty: Trivial EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 0fbeae70ee7ce98e18a47337cd1f205dd88589e9< 1e446e8f8c763be3de7d0362e024cdf46194ffef affected
0fbeae70ee7ce98e18a47337cd1f205dd88589e9< 637c11e3d8d43a7ee654591cda8d17c55a9234fa affected
0fbeae70ee7ce98e18a47337cd1f205dd88589e9< e2baf8ea13fb4b10bec2c4751aea05c00dabcd0f affected
0fbeae70ee7ce98e18a47337cd1f205dd88589e9< 3e1441a4d06d35a314961e40057bd1f0106bbc14 affected
0fbeae70ee7ce98e18a47337cd1f205dd88589e9< 22cb337370e6539b0418832c6040e9b00c1b74ca affected
0fbeae70ee7ce98e18a47337cd1f205dd88589e9< a935b64548fcfe1d5b4dbdd31dddfb0d7019367f affected
0fbeae70ee7ce98e18a47337cd1f205dd88589e9< fa11039d6cdff84584a3ef8cc1f5e1b56e045da2 affected
5.11 affected
… +8 more rows
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I. Basic Information for CVE-2026-64301

Vulnerability Information
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Vulnerability Title
regulator: scmi: fix of_node refcount leak in scmi_regulator_probe()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: regulator: scmi: fix of_node refcount leak in scmi_regulator_probe() scmi_regulator_probe() calls of_find_node_by_name() which takes a reference on the returned device node. On the error path where process_scmi_regulator_of_node() fails, the function returns without calling of_node_put() on the child node, leaking the reference. Add of_node_put(np) on the error path to properly release the reference.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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基金会开源的一款操作系统内核。 Linux kernel 5.11版本存在安全漏洞，该漏洞源于在scmi_regulator_probe()函数中调用of_find_node_by_name()获取设备节点引用后，在错误路径上未调用of_node_put()释放引用，导致引用计数泄漏。
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 0fbeae70ee7ce98e18a47337cd1f205dd88589e9 ~ 1e446e8f8c763be3de7d0362e024cdf46194ffef -
Linux Linux 5.11 -

II. Public POCs for CVE-2026-64301

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III. Intelligence Information for CVE-2026-64301

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Patches & Fixes for CVE-2026-64301 (7)

Same Patch Batch · Linux · 2026-07-25 · 274 CVEs total

CVE-2026-64355 9.8 CRITICAL bpf: Reject fragmented frames in devmap
CVE-2026-64459 9.8 CRITICAL tcp: restore RCU grace period in tcp_ao_destroy_sock
CVE-2026-64303 9.8 CRITICAL spi: fsl-lpspi: terminate the RX channel on TX prepare failure path
CVE-2026-64439 9.8 CRITICAL crypto: krb5 - filter out async aead implementations at alloc
CVE-2026-64410 9.8 CRITICAL netfilter: flowtable: IPIP tunnel hardware offload is not yet support
CVE-2026-64399 9.8 CRITICAL ksmbd: add permission checks for FSCTL_DUPLICATE_EXTENTS_TO_FILE
CVE-2026-64397 9.8 CRITICAL ksmbd: serialize QUERY_DIRECTORY requests per file
CVE-2026-64391 9.8 CRITICAL ksmbd: use opener credentials for ADS I/O
CVE-2026-64387 9.8 CRITICAL smb: client: fix query directory replay double-free
CVE-2026-64386 9.8 CRITICAL smb: client: fix query_info() replay double-free
CVE-2026-64385 9.8 CRITICAL smb: client: fix double-free in SMB2_ioctl() replay
CVE-2026-64383 9.8 CRITICAL smb: client: fix double-free in SMB2_flush() replay
CVE-2026-64384 9.8 CRITICAL smb: client: fix change notify replay double-free
CVE-2026-64268 9.8 CRITICAL RDMA/siw: bound Read Response placement to the RREAD length
CVE-2026-64523 9.8 CRITICAL net/handshake: Take a long-lived file reference at submit
CVE-2026-64257 9.1 CRITICAL smb: client: reject overlapping data areas in SMB2 responses
CVE-2026-64392 9.1 CRITICAL ksmbd: use opener credentials for delete-on-close
CVE-2026-64393 9.1 CRITICAL ksmbd: run set info with opener credentials
CVE-2026-64269 9.1 CRITICAL RDMA/rtrs-srv: Bound RDMA-Write length to chunk size in rdma_write_sg
CVE-2026-64319 9.1 CRITICAL nvmet-auth: validate reply message payload bounds against transfer length

Showing top 20 of 274 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-64301

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