Unknown

CVE-2023-54300 — wifi: ath9k: avoid referencing uninit memory in ath9k_wmi_ctrl_rx

In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: avoid referencing uninit memory in ath9k_wmi_ctrl_rx For the reasons also described in commit b383e8abed41 ("wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg()"), ath9k_htc_rx_msg() should validate pkt_len before accessing the SKB. For example, the obtained SKB may have been badly constructed with pkt_len = 8. In this case, the SKB can only contain a valid htc_frame_hdr but after being processed in ath9k_htc_rx_msg() and passed to ath9k_wmi_ctrl_rx() endpoint RX handler, it is expected to have a WMI command header which should be located inside its data payload. Implement sanity checking inside ath9k_wmi_ctrl_rx(). Otherwise, uninit memory can be referenced. Tested on Qualcomm Atheros Communications AR9271 802.11n . Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Published Dec 30, 2025 · Updated Oct 13, 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

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

0.23%

ahead of 13% of scored CVEs · Oct 14, 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	≥ fb9987d0f748c983bb795a86f47522313f701a08 and < 0bc12e41af4e3ae1f0efecc377f0514459df0707≥ fb9987d0f748c983bb795a86f47522313f701a08 and < 28259ce4f1f1f9ab37fa817756c89098213d2fc0≥ fb9987d0f748c983bb795a86f47522313f701a08 and < 90e3c10177573b8662ac9858abd9bf731d5d98e0≥ fb9987d0f748c983bb795a86f47522313f701a08 and < 250efb4d3f5b32a115ea6bf25437ba44a1b3c04f≥ fb9987d0f748c983bb795a86f47522313f701a08 and < ad5425e70789c29b93acafb5bb4629e4eb908296≥ fb9987d0f748c983bb795a86f47522313f701a08 and < d1c2ff2bd84c3692c9df267a2b991ce92bfca8ef≥ fb9987d0f748c983bb795a86f47522313f701a08 and < 8ed572e52714593b209e3aa352406aff84481179≥ fb9987d0f748c983bb795a86f47522313f701a08 and < 75acec91aeaa07375cd5f418069e61b16d39bbad and 2 more ≥ fb9987d0f748c983bb795a86f47522313f701a08 and < f24292e827088bba8de7158501ac25a59b064953version 2.6.35	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.23%

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 13, 2026
Affected products added · linux/linux
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Deferred
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
2025
CVE published
Dec 30, 2025 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

9 on the record

git.kernel.org/stable/c/8ed572e52714593b209e3aa352406aff84481179
NIST National Vulnerability Database
git.kernel.org/stable/c/f24292e827088bba8de7158501ac25a59b064953
NIST National Vulnerability Database
git.kernel.org/stable/c/250efb4d3f5b32a115ea6bf25437ba44a1b3c04f
NIST National Vulnerability Database
git.kernel.org/stable/c/28259ce4f1f1f9ab37fa817756c89098213d2fc0
NIST National Vulnerability Database
git.kernel.org/stable/c/ad5425e70789c29b93acafb5bb4629e4eb908296
NIST National Vulnerability Database
git.kernel.org/stable/c/90e3c10177573b8662ac9858abd9bf731d5d98e0
NIST National Vulnerability Database
git.kernel.org/stable/c/0bc12e41af4e3ae1f0efecc377f0514459df0707
NIST National Vulnerability Database
git.kernel.org/stable/c/75acec91aeaa07375cd5f418069e61b16d39bbad
NIST National Vulnerability Database
git.kernel.org/stable/c/d1c2ff2bd84c3692c9df267a2b991ce92bfca8ef
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 10h
Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 10h
Unknown CVE-2026-98431 RDMA/uverbs: Fix mmap_lock/disassociation_lock circular dependency 1d
Unknown CVE-2026-98430 RDMA/efa: Keep admin queues alive while IRQ is registered 1d
Unknown CVE-2026-98429 RDMA/efa: Keep EQ resources alive while IRQ is registered 1d
Unknown CVE-2026-98428 ALSA: usb: 6fire: Avoid embedded URBs 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-2023-54300 is "wifi: ath9k: avoid referencing uninit memory in ath9k_wmi_ctrl_rx", 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 0.23% 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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