CVE-2023-54275

Kernel memory loss via failed ath11k peer lookup

Published Dec 30, 2025 · Updated Dec 30, 2025

Memory leak in the ath11k Wi-Fi driver in Linux allows attackers to consume kernel memory when receive-fragment peer setup fails. The ath11k_peer_rx_frag_setup function allocates a michael_mic shash before peer lookup and fails to free it when ath11k_peer_find returns no peer. Public records do not establish who can force this path or how often it repeats, so the bounded documented consequence is leaked kernel memory.

CVSS severity7.0
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the ath11k Wi-Fi driver in Linux allows attackers to consume kernel memory when receive-fragment peer setup fails. The ath11k_peer_rx_frag_setup function allocates a michael_mic shash before peer lookup and fails to free it when ath11k_peer_find returns no peer. Public records do not establish who can force this path or how often it repeats, so the bounded documented consequence is leaked kernel memory.

The record

CVE
CVE-2023-54275
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2025Record 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=243874c64c8137bc90455200a7735da72836ecab <137963e3b95776f1d57c62f249a93fe47e019a22
  2. Affected versionversion=243874c64c8137bc90455200a7735da72836ecab <53c8a256e5d3f31d80186de03a3d2a7f747b2aa0
  3. Affected versionversion=243874c64c8137bc90455200a7735da72836ecab <64a78ec4f4579798d8e885aca9bdd707bca6b16b
  4. Affected versionversion=243874c64c8137bc90455200a7735da72836ecab <e596b36e15a7158b0bb2d55077b6b381ee41020c
  5. Affected versionversion=243874c64c8137bc90455200a7735da72836ecab <ed3f83b3459a67a3ab9d806490ac304b567b1c2d
  6. Affected versionversion=5.7

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=243874c64c8137bc90455200a7735da72836ecab <137963e3b95776f1d57c62f249a93fe47e019a22; version=243874c64c8137bc90455200a7735da72836ecab <53c8a256e5d3f31d80186de03a3d2a7f747b2aa0; version=243874c64c8137bc90455200a7735da72836ecab <64a78ec4f4579798d8e885aca9bdd707bca6b16b; version=243874c64c8137bc90455200a7735da72836ecab <e596b36e15a7158b0bb2d55077b6b381ee41020c; version=243874c64c8137bc90455200a7735da72836ecab <ed3f83b3459a67a3ab9d806490ac304b567b1c2d; version=5.7

Published CVSS scores

7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.3TenableCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
1.7TenableAV:L/AC:L/Au:S/C:N/I:N/A:P

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

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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