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CVE-2026-89463— power: supply: ucs1002: fix use-after-free on remove

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 5.10及之后版本存在安全漏洞，该漏洞源于ucs1002驱动在解绑时未取消health_poll延迟工作，警报中断处理程序仍可将其重新排队，导致驱动程序数据释放后仍被解引用，造成释放后重用。

AI Predicted 7.1 Difficulty: Hard EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 81196e2e57fc5b88f6b8ca98372a3dde047aa49d< 00c19f8a9a58a318a76fd6f735a8aab3f8ead393 affected
81196e2e57fc5b88f6b8ca98372a3dde047aa49d< a9a7bb801c443a4d9fc623c4a47deb53accb70bb affected
81196e2e57fc5b88f6b8ca98372a3dde047aa49d< 2ec4d203ecb06d327af67e32097fe8f774838a40 affected
81196e2e57fc5b88f6b8ca98372a3dde047aa49d< 4ca2a4678202f15eb790eb7f1d562061709caea7 affected
81196e2e57fc5b88f6b8ca98372a3dde047aa49d< 39b60d615dfa1725c235351fb12bc72e5f8a8d32 affected
81196e2e57fc5b88f6b8ca98372a3dde047aa49d< 35242c93d35f391afdc84cef6236b8ad57f1df24 affected
81196e2e57fc5b88f6b8ca98372a3dde047aa49d< 609af0ceeaefdfa42cd01dd060b20f2e41f9a232 affected
5.10 affected
… +8 more rows
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I. Basic Information for CVE-2026-89463

Vulnerability Information
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Vulnerability Title
power: supply: ucs1002: fix use-after-free on remove
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: power: supply: ucs1002: fix use-after-free on remove ucs1002 has no remove callback, so unbind runs entirely through devm. The alert IRQ handler queues the health_poll delayed work, and the work reschedules itself while the chip reports a bad-health condition. devm frees the alert IRQ, which only synchronizes the handler; it does not cancel the delayed work, which can then run after devm frees the driver data and dereference it. Register health_poll with devm_delayed_work_autocancel() before the alert IRQ is requested. devm then frees the IRQ before cancelling the work, so the handler can no longer queue it and the work is cancelled before the driver data is freed. This issue was found by an in-house static analysis tool.
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基金会开源的一个操作系统内核。 Linux kernel 5.10及之后版本存在安全漏洞，该漏洞源于ucs1002驱动在解绑时未取消health_poll延迟工作，警报中断处理程序仍可将其重新排队，导致驱动程序数据释放后仍被解引用，造成释放后重用。
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 81196e2e57fc5b88f6b8ca98372a3dde047aa49d ~ 00c19f8a9a58a318a76fd6f735a8aab3f8ead393 -
Linux Linux 5.10 -

II. Public POCs for CVE-2026-89463

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III. Intelligence Information for CVE-2026-89463

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Patches & Fixes for CVE-2026-89463 (7)

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-2026-89463

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