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CVE-2026-90224— nfc: nci: fix double completion race in nci_data_exchange_complete

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.

在 Linux 内核中，以下漏洞已得到修复： nfc: nci: 修复 nci_data_exchange_complete 中的双重完成竞争条件 和 可能同时调用 。在提交 4527025d440ce8（“nfc: nci: 修复 nci_close_device 中的循环锁依赖”）中， 被移动到了 之后，导致 不再与关闭路径中显式的完成调用进行串行化。两个调用者都会读取非空的回调指针并调用 ，而该函数会调用 —— 但此前只执行了一次 ，因此第二次 会导致引用计数下溢，进而在套接字仍在使用时被释放。 修复方式：将

CVSS 7.5 · High EPSS 0.36% · P27

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 26

VendorProduct Version RangeStatus
Linux Linux 7ed00a3edc8597fe2333f524401e2889aa1b5edf< 3f075832734005310740d148d1cf1c1e792ebdca affected
5eef9ebec7f5738f12cadede3545c05b34bf5ac3< 588ccd19a6e69eca72d54608c3ab3b45709b2305 affected
ca54e904a071aa65ef3ad46ba42d51aaac6b73b4< cf646a9f5554bc07d6ccb59c327812b3a0c6a368 affected
eb435d150ca74b4d40f77f1a2266f3636ed64a79< 9030a1bbe2c6b1e3e54cef462d159b5248f09fd2 affected
1edc12d2bbcb7a8d0f1088e6fccb9d8c01bb1289< bfdf412208fea7fc0d5b32d68a35b25261917393 affected
d89b74bf08f067b55c03d7f999ba0a0e73177eb3< ba4c776af3dc21ed04e315e6545e99703bb1b53a affected
4527025d440ce84bf56e75ce1df2e84cb8178616< ee08414d78b851e3d1856d6e4d631939b01a1bbe affected
4527025d440ce84bf56e75ce1df2e84cb8178616< 8265a626cc14a48e46e6dc8c47667e72b4232ac2 affected
… +18 more rows
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I. Basic Information for CVE-2026-90224

Vulnerability Information
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Vulnerability Title
nfc: nci: fix double completion race in nci_data_exchange_complete
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfc: nci: fix double completion race in nci_data_exchange_complete nci_close_device() and nci_rx_work can both call nci_data_exchange_complete() concurrently. After commit 4527025d440ce8 ("nfc: nci: fix circular locking dependency in nci_close_device") moved flush_workqueue(ndev->rx_wq) after mutex_unlock(&ndev->req_lock), rx_work is no longer serialized with the explicit completion call in the close path. Both callers read the non-NULL callback pointer and invoke rawsock_data_exchange_complete(), which calls sock_put() -- but only one sock_hold() was taken, so the second sock_put() underflows the refcount and frees the socket while it is still in use. Replace the bare clear_bit(NCI_DATA_EXCHANGE) with test_and_clear_bit() so that only the first caller proceeds to invoke the callback.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 7ed00a3edc8597fe2333f524401e2889aa1b5edf ~ 3f075832734005310740d148d1cf1c1e792ebdca -
Linux Linux 7.0 -

II. Public POCs for CVE-2026-90224

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III. Intelligence Information for CVE-2026-90224

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Patches & Fixes for CVE-2026-90224 (8)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90286 8.8 HIGH drm/amdgpu/gfx6: Use PFP on the compute queues too
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-90162 8.8 HIGH ksmbd: defer publishing granted locks to prevent UAF/double-free race
CVE-2026-90379 8.8 HIGH wifi: mt76: mt7921: Add PCIe AER handler support to prevent system crash
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90371 8.8 HIGH wifi: mt76: fix RXDMAD_C buffer recycling race

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-90224

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