Unknown

CVE-2026-90222 — nfc: pn533: hold a reference to the request skb during send_frame

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: hold a reference to the request skb during send_frame __pn533_send_async() publishes the command and then calls dev->phy_ops->send_frame(). Once dev->cmd is set, an incoming frame can be matched to this command: the I2C threaded IRQ runs pn533_recv_frame(), which queues cmd_complete_work, and pn533_send_async_complete() frees cmd->req with consume_skb(). On the I2C transport, pn533_i2c_send_frame() still dereferences the same skb after i2c_master_send() returns, so a completion that races the send can free the skb while the transport is still using it. The request skb is owned by the command object and may be freed by command completion at any time after dev->cmd is published, so the transport send path must not assume it stays alive. Hold a temporary reference to the request skb across the send_frame() call so the transport always sees a live skb even if completion races the send. Add a pn533_send_cmd_frame() helper and use it from all three send paths.

Published Sep 17, 2026 · Updated Oct 19, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · 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

EPSS 0.2% (30-day exploitation probability)+2

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

0.21%

ahead of 11% of scored CVEs · Oct 18, 2026

Affects

Linux

CVSS base

—

Score not published yet.

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	≥ 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and < 8710faddef4ad8b2a6bfa985d896e2e1bfb77018≥ 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and < 19f1239758c23f087f4c25733cfcf62bf0b06051≥ 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and < 7ee72c64b4b66b1b42dbddbca0a80a218f1b9297≥ 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and < 753bdaf3220fe8371a6c3c75da645ea7753d11be≥ 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and < d329f61ad5786900334a54c2445dc99feda545bf≥ 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and < 7a8e0a7aef80721da287ac246349aba7d98f6aed≥ 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and < 3e7a093c177f9f8b9fd039cab41191515079425a≥ 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc and < 47792358a624ea066455ef86b744159928cd7716 and 1 more version 4.7	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 18, 2026 · 3 reading(s) · max 0.21%

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
Record published
Oct 15, 2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
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× References added · Oct 19, 2026 – Oct 19, 2026
1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

10 on the record

nvd.nist.gov/vuln/detail/CVE-2026-90222
GitHub Security Advisories
github.com/advisories/GHSA-36pr-4p99-6568
GitHub Security Advisories
git.kernel.org/stable/c/8710faddef4ad8b2a6bfa985d896e2e1bfb77018
NIST National Vulnerability Database
git.kernel.org/stable/c/7a8e0a7aef80721da287ac246349aba7d98f6aed
NIST National Vulnerability Database
git.kernel.org/stable/c/3e7a093c177f9f8b9fd039cab41191515079425a
NIST National Vulnerability Database
git.kernel.org/stable/c/753bdaf3220fe8371a6c3c75da645ea7753d11be
NIST National Vulnerability Database
git.kernel.org/stable/c/7ee72c64b4b66b1b42dbddbca0a80a218f1b9297
NIST National Vulnerability Database
git.kernel.org/stable/c/d329f61ad5786900334a54c2445dc99feda545bf
NIST National Vulnerability Database
git.kernel.org/stable/c/47792358a624ea066455ef86b744159928cd7716
NIST National Vulnerability Database
git.kernel.org/stable/c/19f1239758c23f087f4c25733cfcf62bf0b06051
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Unknown CVE-2026-98868 dm-pcache: reject a kset that overruns its segment 1d
Unknown CVE-2026-98866 sched/cache: Introduce task_struct->sched_cache_grp to fix UAF 1d
Unknown CVE-2026-98867 dm-pcache: bound the logical key offset from persistent memory 1d
Unknown CVE-2026-98865 sched_ext: Don't run ops.dequeue() with a DSQ lock held 1d
Unknown CVE-2026-98864 sched_ext: Wait for SCX_OPSS_DISPATCHING before reenqueueing a task 1d
Unknown CVE-2026-98863 KVM: x86: Re-pend GET_NESTED_STATE_PAGES if getting said pages fails 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 CVSS score published by NVD, the CNA, CISA or GitHub so far.
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-2026-90222 is "nfc: pn533: hold a reference to the request skb during send_frame", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.21% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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