CVE-2026-89465— power: supply: rt9455: quiesce delayed work before teardown
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 4.2版本至7.3-rc1之前版本存在安全漏洞，该漏洞源于rt9455驱动在拆除前未静默延迟工作，导致延迟工作可能在rt9455_info被释放后访问该结构，造成释放后重用。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 12
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | e86d69dd786e94046b8f5be7df1b9a8226a40b2a< 442c60c08ec23ac45da0a58877cab05e0a58f4ea |
affected |
e86d69dd786e94046b8f5be7df1b9a8226a40b2a< df67c7a2fff8414aa766b8cd5ffe11ec1ca27d02 |
affected | ||
e86d69dd786e94046b8f5be7df1b9a8226a40b2a< 1b9978433c61a9b46e48832a1ebceee1cf5c9eb4 |
affected | ||
e86d69dd786e94046b8f5be7df1b9a8226a40b2a< 7323e562f6961e4b7bce3225cde4ecbc78260deb |
affected | ||
e86d69dd786e94046b8f5be7df1b9a8226a40b2a< 3e7a1ebc32fad5a558254a478efd401c17a24381 |
affected | ||
4.2 |
affected | ||
< 4.2 |
unaffected | ||
6.6.157≤ 6.6.* |
unaffected | ||
| … +4 more rows | |||
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I. Basic Information for CVE-2026-89465
Vulnerability Information
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Vulnerability Title
power: supply: rt9455: quiesce delayed work before teardown
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
power: supply: rt9455: quiesce delayed work before teardown
The threaded IRQ handler can queue pwr_rdy_work,
max_charging_time_work and batt_presence_work. pwr_rdy_work and
batt_presence_work can also queue max_charging_time_work, while
batt_presence_work can requeue itself.
rt9455_remove() cancels max_charging_time_work before
batt_presence_work. The latter can therefore queue
max_charging_time_work after it has already been cancelled:
rt9455_remove() workqueue
cancel pwr_rdy_work
cancel max_charging_time_work
batt_presence_work queues
max_charging_time_work
cancel batt_presence_work
return
devres frees rt9455_info
max_charging_time_work dereferences
rt9455_info
The IRQ also remains registered until devres cleanup and can queue more
work after any of the cancellation calls. If rt9455_hw_init() fails
after the IRQ has been requested, probe returns without cancelling work
that may already have been queued. A pending callback can then access
rt9455_info after it has been freed.
Register rt9455_cancel_all_delayed_works() through
devm_add_action_or_reset() right after devm_power_supply_register().
devres invokes the action in reverse registration order, after the
managed IRQ has been freed and before rt9455_info is released, so the
delayed works are drained in both rt9455_remove() and the probe error
path. Cancel pwr_rdy_work and batt_presence_work before
max_charging_time_work because both can queue the latter.
This issue was found by an in-house static analysis tool.
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 4.2版本至7.3-rc1之前版本存在安全漏洞，该漏洞源于rt9455驱动在拆除前未静默延迟工作，导致延迟工作可能在rt9455_info被释放后访问该结构，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
II. Public POCs for CVE-2026-89465
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-89465 (5)
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-2026-89478 | 9.8 CRITICAL | sctp: drop a chunk if its transport was removed |
| CVE-2026-89479 | 9.8 CRITICAL | sctp: stop processing a packet once its association is deleted |
| CVE-2026-89702 | 9.8 CRITICAL | nfsd: size fh_verify server sockaddr slot by xpt_locallen |
| CVE-2026-89703 | 9.8 CRITICAL | nfsd: set SC_STATUS_FREED in nfsd4_drop_revoked_stid for delegations |
| 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 → →
IV. Related Vulnerabilities
Same product: Linux
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CVE-2026-98385
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bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98381
veth: manage XDP program pointers during channel resize
Same vendor: Linux
-
CVE-2026-98385
sched/cache: Decouple sched_cache_group from mm to fix UAF -
CVE-2026-98384
bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destr -
CVE-2026-98383
bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98381
veth: manage XDP program pointers during channel resize
V. Comments for CVE-2026-89465
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