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CVE-2026-89504— regulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving dangling of_node pointer

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存在安全漏洞，该漏洞源于as3722_get_regulator_dt_data函数中过早调用of_node_put释放对np的引用，导致pdev->dev.of_node成为悬空指针，可能引发释放后重用。

CVSS 8.4 · High EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux bc407334e9a6a745de5360395282beb2690adf48< d9b1407477fb736978b04108073180ca84958936 affected
bc407334e9a6a745de5360395282beb2690adf48< bd5606e9da1a01a61c7d2f5df36243414a0142be affected
bc407334e9a6a745de5360395282beb2690adf48< 0bde4f140e90f87ebd49cd9c884c4bb3f19fe931 affected
bc407334e9a6a745de5360395282beb2690adf48< eda08b6bd64f01ca9defbfcc9e0c3e30f46cfc02 affected
bc407334e9a6a745de5360395282beb2690adf48< d3c1316d84e0a036890b00ae6e4c0b0b80f70c25 affected
bc407334e9a6a745de5360395282beb2690adf48< 95342d26f9c6b68a46ab57fa48428a3c4a423dd7 affected
bc407334e9a6a745de5360395282beb2690adf48< 8648e29e5c01b6b677c704049189287e27255ccb affected
bc407334e9a6a745de5360395282beb2690adf48< f9324d670ae0b88cbfb0aa48fcaefa5baeb8da4c affected
… +10 more rows
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I. Basic Information for CVE-2026-89504

Vulnerability Information
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Vulnerability Title
regulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving dangling of_node pointer
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: regulator: as3722_get_regulator_dt_data: fix premature of_node_put leaving dangling of_node pointer In as3722_get_regulator_dt_data(), of_get_child_by_name() acquires a reference on np, which is then assigned to pdev->dev.of_node. The function immediately calls of_node_put(np), releasing the reference and leaving pdev->dev.of_node as a dangling pointer. Remove the of_node_put(np) call to let the device hold the reference.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/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存在安全漏洞，该漏洞源于as3722_get_regulator_dt_data函数中过早调用of_node_put释放对np的引用，导致pdev->dev.of_node成为悬空指针，可能引发释放后重用。
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 bc407334e9a6a745de5360395282beb2690adf48 ~ d9b1407477fb736978b04108073180ca84958936 -
Linux Linux 3.13 -

II. Public POCs for CVE-2026-89504

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III. Intelligence Information for CVE-2026-89504

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Patches & Fixes for CVE-2026-89504 (8)

Same Patch Batch · Linux · 2026-09-11 · 431 CVEs total

CVE-2026-89688 9.8 CRITICAL nfsd: drop the stateid, not the stateowner, on seqid_op replay retry
CVE-2026-89656 9.8 CRITICAL libceph: reject buckets with mismatched CRUSH ids
CVE-2026-89655 9.8 CRITICAL ceph: fix UAF in __kick_flushing_caps() on cf entry freed during unlock
CVE-2026-89658 9.8 CRITICAL NFSD: Prevent client use-after-free during NFSv4.0 revoked-state cleanup
CVE-2026-89660 9.8 CRITICAL NFSD: Prevent client use-after-free during admin state revocation
CVE-2026-89659 9.8 CRITICAL NFSD: Prevent client use-after-free during delegation revoke
CVE-2026-89662 9.8 CRITICAL NFSD: Prevent lock owner use-after-free during client teardown
CVE-2026-89669 9.8 CRITICAL nfsd: initialize copy-notify stateid before publishing it
CVE-2026-89674 9.8 CRITICAL nfsd: fix XDR length calculation in nfsd4_ff_encode_layoutget
CVE-2026-89675 9.8 CRITICAL nfsd: fix UAF in async copy cancel and shutdown
CVE-2026-89676 9.8 CRITICAL nfsd: fix stale s2s_cp_stateids IDR entry for async COPY
CVE-2026-89677 9.8 CRITICAL nfsd: fix possible fh_compose of wrong dentry in nfsd4_create_file()
CVE-2026-89681 9.8 CRITICAL nfsd: fix layout fence worker double-reference race
CVE-2026-89686 9.8 CRITICAL nfsd: fix BUG_ON in nfsd4_alloc_layout_stateid on racing delegation revoke
CVE-2026-89703 9.8 CRITICAL nfsd: set SC_STATUS_FREED in nfsd4_drop_revoked_stid for delegations
CVE-2026-89479 9.8 CRITICAL sctp: stop processing a packet once its association is deleted
CVE-2026-89478 9.8 CRITICAL sctp: drop a chunk if its transport was removed
CVE-2026-89702 9.8 CRITICAL nfsd: size fh_verify server sockaddr slot by xpt_locallen
CVE-2026-89482 9.8 CRITICAL nvme-tcp: do not accept C2HData based on blk_rq_payload_bytes() alone
CVE-2026-89708 9.8 CRITICAL nfsd: RCU-protect cl_cb_session to fix use-after-free on session teardown

Showing top 20 of 431 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-89504

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