High

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

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.

Published Sep 17, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

—

No EPSS score.

Affects

Linux

CVSS base

7.5

High · 2 source(s)

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	version 09143c0e8f3b03517e6233aad42f45c794d8df8eversion 7.0≥ 6.19.11 and < 6.20≥ 6.18.21 and < 6.18.52≥ 6.12.80 and < 6.12.110≥ 6.6.131 and < 6.6.157≥ 6.1.168 and < 6.1.188≥ 5.15.203 and < 5.15.221 and 9 more ≥ 5.10.253 and < 5.10.270≥ 7ed00a3edc8597fe2333f524401e2889aa1b5edf and < 3f075832734005310740d148d1cf1c1e792ebdca≥ 4527025d440ce84bf56e75ce1df2e84cb8178616 and < 8265a626cc14a48e46e6dc8c47667e72b4232ac2≥ 4527025d440ce84bf56e75ce1df2e84cb8178616 and < ee08414d78b851e3d1856d6e4d631939b01a1bbe≥ d89b74bf08f067b55c03d7f999ba0a0e73177eb3 and < ba4c776af3dc21ed04e315e6545e99703bb1b53a≥ 1edc12d2bbcb7a8d0f1088e6fccb9d8c01bb1289 and < bfdf412208fea7fc0d5b32d68a35b25261917393≥ eb435d150ca74b4d40f77f1a2266f3636ed64a79 and < 9030a1bbe2c6b1e3e54cef462d159b5248f09fd2≥ ca54e904a071aa65ef3ad46ba42d51aaac6b73b4 and < cf646a9f5554bc07d6ccb59c327812b3a0c6a368≥ 5eef9ebec7f5738f12cadede3545c05b34bf5ac3 and < 588ccd19a6e69eca72d54608c3ab3b45709b2305	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Adjacent

Attack complexity

High

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
7.5	CVSS 3.1	High	1.6	5.9	416baaa9-dc9f-4396-8d5f-8c081fb06d67 via NIST National Vulnerability Database
7.5	CVSS 3.1	High	—	—	Linux via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H (score shown at the top: 416baaa9-dc9f-4396-8d5f-8c081fb06d67)

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 15, 2026
CVSS changed · 7.5
Oct 15, 2026 · NIST National Vulnerability Database
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Sep 17, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

8 on the record

git.kernel.org/stable/c/ba4c776af3dc21ed04e315e6545e99703bb1b53a
NIST National Vulnerability Database
git.kernel.org/stable/c/3f075832734005310740d148d1cf1c1e792ebdca
NIST National Vulnerability Database
git.kernel.org/stable/c/9030a1bbe2c6b1e3e54cef462d159b5248f09fd2
NIST National Vulnerability Database
git.kernel.org/stable/c/588ccd19a6e69eca72d54608c3ab3b45709b2305
NIST National Vulnerability Database
git.kernel.org/stable/c/bfdf412208fea7fc0d5b32d68a35b25261917393
NIST National Vulnerability Database
git.kernel.org/stable/c/cf646a9f5554bc07d6ccb59c327812b3a0c6a368
NIST National Vulnerability Database
git.kernel.org/stable/c/8265a626cc14a48e46e6dc8c47667e72b4232ac2
NIST National Vulnerability Database
git.kernel.org/stable/c/ee08414d78b851e3d1856d6e4d631939b01a1bbe
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 15h
Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 15h
Unknown CVE-2026-98424 wifi: cfg80211: undo netns switch if renaming the wiphy fails 1d
Unknown CVE-2026-98425 wifi: mac80211: don't warn when an IBSS has no channel to scan 1d
Unknown CVE-2026-98426 wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path 1d
Unknown CVE-2026-98427 net/sched: codel: bound the dropping loop per dequeue call 1d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No FIRST EPSS score.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-90224 is "nfc: nci: fix double completion race in nci_data_exchange_complete", rated High. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.5 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

Comments

Moderated technical discussion. Read the community guidelines.

No comments yet.