CVE-2026-80941Hinoki check available

Kernel memory consumption via unfreed transmit buffers

Published Sep 11, 2026 · Updated Sep 11, 2026

Memory leak in Linux 5.7 and later leaves failed rtw88 transmit buffers allocated in kernel memory after an HCI write error. The rtw_txq_push_skb error path returns when rtw_hci_tx_write fails without calling ieee80211_free_txskb on the dequeued skb. The flaw requires an rtw88-supported wireless device and an HCI transmission failure; repeated failures consume kernel memory, but no service interruption is documented.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Memory leak in Linux 5.7 and later leaves failed rtw88 transmit buffers allocated in kernel memory after an HCI write error. The rtw_txq_push_skb error path returns when rtw_hci_tx_write fails without calling ieee80211_free_txskb on the dequeued skb. The flaw requires an rtw88-supported wireless device and an HCI transmission failure; repeated failures consume kernel memory, but no service interruption is documented.

The record

CVE
CVE-2026-80941
Published
Sep 11, 2026
Updated
Sep 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.7
  2. Affected versionversion=aaab5d0e673749f82ff34e5f15ea8a689789a9ce <51d8b35574721cf3fe744f46ebd9629916063fee
  3. Affected versionversion=aaab5d0e673749f82ff34e5f15ea8a689789a9ce <6e95852f904edbabf411793093fcfd6f6d49ef27
  4. Affected versionversion=aaab5d0e673749f82ff34e5f15ea8a689789a9ce <7364713f0931ee45fdf0bea27103b40ccc94979a
  5. Affected versionversion=aaab5d0e673749f82ff34e5f15ea8a689789a9ce <9f2948010764d708bda27369d09ce6f194abe8e3

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.7; version=aaab5d0e673749f82ff34e5f15ea8a689789a9ce <51d8b35574721cf3fe744f46ebd9629916063fee; version=aaab5d0e673749f82ff34e5f15ea8a689789a9ce <6e95852f904edbabf411793093fcfd6f6d49ef27; version=aaab5d0e673749f82ff34e5f15ea8a689789a9ce <7364713f0931ee45fdf0bea27103b40ccc94979a; version=aaab5d0e673749f82ff34e5f15ea8a689789a9ce <9f2948010764d708bda27369d09ce6f194abe8e3

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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