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CVE-2026-89475— power: supply: bq24257: 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存在安全漏洞，该漏洞源于设备移除时STAT引脚中断处理程序可能重新调度工作并解引用已释放的bq结构，导致释放后重用。

AI Predicted 5.1 Difficulty: Hard EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1201.004

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 2219a935963e5eeb19e5abfb99475fcc06bbb804< 9d77fd7dd9a3ad57f7655c5264b503b85adbb7b8 affected
2219a935963e5eeb19e5abfb99475fcc06bbb804< a279e64c907f5638bb34cb8e2c9285798cf5f690 affected
2219a935963e5eeb19e5abfb99475fcc06bbb804< 6d2eb93975c07b0169a3287efc1ae3b60cf52d8e affected
2219a935963e5eeb19e5abfb99475fcc06bbb804< 861ec73ce86e2ca18082cc7be4f140a5bbdf1428 affected
2219a935963e5eeb19e5abfb99475fcc06bbb804< f495808cdd6d9576965787cf6d9737d0b0e86b73 affected
2219a935963e5eeb19e5abfb99475fcc06bbb804< 47ccbad210f48721c30d69d65b83dc9fff919ca9 affected
2219a935963e5eeb19e5abfb99475fcc06bbb804< 9d34c9d660c3d0931d2cc749c46c47cf31f96e48 affected
4.2 affected
… +8 more rows
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I. Basic Information for CVE-2026-89475

Vulnerability Information
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Vulnerability Title
power: supply: bq24257: 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: bq24257: fix use-after-free on remove The STAT-pin interrupt is devm-managed, so it stays armed until the devm cleanup that runs after remove() returns. remove() cancels bq->iilimit_setup_work while the threaded handler can still fire; that handler reschedules the work and dereferences bq, so the work runs against freed memory once devm frees bq. Make the delayed work device-managed with devm_delayed_work_autocancel(), registered before the interrupt request. The devm cleanup then releases the interrupt first, so the handler can no longer reschedule the work, and cancels the work before bq is freed. The explicit cancel_delayed_work_sync() in remove() is no longer needed and is dropped. Found by static analysis.
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存在安全漏洞，该漏洞源于设备移除时STAT引脚中断处理程序可能重新调度工作并解引用已释放的bq结构，导致释放后重用。
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 2219a935963e5eeb19e5abfb99475fcc06bbb804 ~ 9d77fd7dd9a3ad57f7655c5264b503b85adbb7b8 -
Linux Linux 4.2 -

II. Public POCs for CVE-2026-89475

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III. Intelligence Information for CVE-2026-89475

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Patches & Fixes for CVE-2026-89475 (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-2026-89475

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