Unknown

CVE-2022-50740 — wifi: ath9k: hif_usb: fix memory leak of urbs in ath9k_hif_usb_dealloc_tx_urbs()

In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: hif_usb: fix memory leak of urbs in ath9k_hif_usb_dealloc_tx_urbs() Syzkaller reports a long-known leak of urbs in ath9k_hif_usb_dealloc_tx_urbs(). The cause of the leak is that usb_get_urb() is called but usb_free_urb() (or usb_put_urb()) is not called inside usb_kill_urb() as urb->dev or urb->ep fields have not been initialized and usb_kill_urb() returns immediately. The patch removes trying to kill urbs located in hif_dev->tx.tx_buf because hif_dev->tx.tx_buf is not supposed to contain urbs which are in pending state (the pending urbs are stored in hif_dev->tx.tx_pending). The tx.tx_lock is acquired so there should not be any changes in the list. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Published Dec 24, 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 0.3% (30-day exploitation probability)+3

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

0.28%

ahead of 19% 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	version 7f5972267295fe49f8da8eb42bc2eb3d140860c0version 5.10≥ 5.9.2 and < 5.10≥ 5.8.17 and < 5.9≥ 4.4.241 and < 4.5≥ 5.4.73 and < 5.4.229≥ 4.19.154 and < 4.19.270≥ 4.14.203 and < 4.14.303 and 12 more ≥ 4.9.241 and < 4.9.337version 2d72d5ce63c92f56b9f978e8befb5838144176b9≥ 6f0706ef39fecc6bf56d67728fe0c94e26b43e9d and < 134ae5eba41294eff76e4be20d6001b8f0192207version b92e116ae36f498858dbb18e29a066c3f5348965≥ 03fb92a432ea5abe5909bca1455b7e44a9380480 and < c2a94de38c74e86f49124ac14f093d6a5c377a90≥ 03fb92a432ea5abe5909bca1455b7e44a9380480 and < 08aa0537ec8cf29ceccae98acc1a534fc12598c1≥ 03fb92a432ea5abe5909bca1455b7e44a9380480 and < c05189a429fdb371dd455c3c466d67ac2ebff152≥ 03fb92a432ea5abe5909bca1455b7e44a9380480 and < d856f7574bcc1d81de565a857caf32f122cd7ce0≥ 03fb92a432ea5abe5909bca1455b7e44a9380480 and < c3fb3e9a2c0c1a0fa492d90eb19bcfa92a5f884d≥ a9990ed2d7ca9339d37c7f67d6f5cb298c3f1b34 and < 9850791d389b342ae6e573fe8198db0b4d338352≥ df4318440c1568b7dedc5f7d4e617d0e297a1313 and < eddbb8f7620f9f8008b090a6e10c460074ca575a≥ 795d57a558d106b8a5bc2bd7aeaf707d9a099244 and < 472312fef2b9eccaa03bd59e0ab2527da945e736	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.28%

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 24, 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/d856f7574bcc1d81de565a857caf32f122cd7ce0
NIST National Vulnerability Database
git.kernel.org/stable/c/c2a94de38c74e86f49124ac14f093d6a5c377a90
NIST National Vulnerability Database
git.kernel.org/stable/c/134ae5eba41294eff76e4be20d6001b8f0192207
NIST National Vulnerability Database
git.kernel.org/stable/c/08aa0537ec8cf29ceccae98acc1a534fc12598c1
NIST National Vulnerability Database
git.kernel.org/stable/c/9850791d389b342ae6e573fe8198db0b4d338352
NIST National Vulnerability Database
git.kernel.org/stable/c/eddbb8f7620f9f8008b090a6e10c460074ca575a
NIST National Vulnerability Database
git.kernel.org/stable/c/472312fef2b9eccaa03bd59e0ab2527da945e736
NIST National Vulnerability Database
git.kernel.org/stable/c/c05189a429fdb371dd455c3c466d67ac2ebff152
NIST National Vulnerability Database
git.kernel.org/stable/c/c3fb3e9a2c0c1a0fa492d90eb19bcfa92a5f884d
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 6h
Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 6h
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 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-2022-50740 is "wifi: ath9k: hif_usb: fix memory leak of urbs in ath9k_hif_usb_dealloc_tx_urbs()", 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 0.28% 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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