CVE-2023-53226

Kernel memory corruption via unchecked RX lengths

Published Sep 15, 2025 · Updated Aug 5, 2026

Integer underflow in Linux kernel mwifiex receive handling from 3.7 allows remote attackers to corrupt memory via malformed Wi-Fi frames. Receive handlers trust packet offsets and lengths before dereferencing headers, while mwifiex_process_mgmt_packet subtracts header sizes from an undersized length, enabling out-of-bounds reads and writes. A Marvell mwifiex interface must receive attacker-influenced frames; no host account or user interaction is required, and exploitation can disclose kernel data, corrupt kernel memory, or crash the host.

CVSS severity8.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer underflow in Linux kernel mwifiex receive handling from 3.7 allows remote attackers to corrupt memory via malformed Wi-Fi frames. Receive handlers trust packet offsets and lengths before dereferencing headers, while mwifiex_process_mgmt_packet subtracts header sizes from an undersized length, enabling out-of-bounds reads and writes. A Marvell mwifiex interface must receive attacker-influenced frames; no host account or user interaction is required, and exploitation can disclose kernel data, corrupt kernel memory, or crash the host.

The record

CVE
CVE-2023-53226
Published
Sep 15, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-191, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=2dbaf751b1dec3a603130a475f94cc4d3f404362 <11958528161731c58e105b501ed60b83a91ea941
  2. Affected versionversion=2dbaf751b1dec3a603130a475f94cc4d3f404362 <29eca8b7863d1d7de6c5b746b374e3487d14f154
  3. Affected versionversion=2dbaf751b1dec3a603130a475f94cc4d3f404362 <3975e21d4d01efaf0296ded40d11c06589c49245
  4. Affected versionversion=2dbaf751b1dec3a603130a475f94cc4d3f404362 <3fe3923d092e22d87d1ed03e2729db444b8c1331
  5. Affected versionversion=2dbaf751b1dec3a603130a475f94cc4d3f404362 <650d1bc02fba7b42f476d8b6643324abac5921ed
  6. Affected versionversion=2dbaf751b1dec3a603130a475f94cc4d3f404362 <7c54b6fc39eb1aac51cf2945f8a25e2a47fdca02
  7. Affected versionversion=2dbaf751b1dec3a603130a475f94cc4d3f404362 <8824aa4ab62c800f75d96f48e1883a5f56ec5869
  8. Affected versionversion=2dbaf751b1dec3a603130a475f94cc4d3f404362 <a7300e3800e9fd5405e88ce67709c1a97783b9c8
  9. Affected versionversion=2dbaf751b1dec3a603130a475f94cc4d3f404362 <f517c97fc129995de77dd06aa5a74f909ebf568f
  10. Affected versionversion=3.7

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2dbaf751b1dec3a603130a475f94cc4d3f404362 <11958528161731c58e105b501ed60b83a91ea941; version=2dbaf751b1dec3a603130a475f94cc4d3f404362 <29eca8b7863d1d7de6c5b746b374e3487d14f154; version=2dbaf751b1dec3a603130a475f94cc4d3f404362 <3975e21d4d01efaf0296ded40d11c06589c49245; version=2dbaf751b1dec3a603130a475f94cc4d3f404362 <3fe3923d092e22d87d1ed03e2729db444b8c1331; version=2dbaf751b1dec3a603130a475f94cc4d3f404362 <650d1bc02fba7b42f476d8b6643324abac5921ed; version=2dbaf751b1dec3a603130a475f94cc4d3f404362 <7c54b6fc39eb1aac51cf2945f8a25e2a47fdca02; version=2dbaf751b1dec3a603130a475f94cc4d3f404362 <8824aa4ab62c800f75d96f48e1883a5f56ec5869; version=2dbaf751b1dec3a603130a475f94cc4d3f404362 <a7300e3800e9fd5405e88ce67709c1a97783b9c8; version=2dbaf751b1dec3a603130a475f94cc4d3f404362 <f517c97fc129995de77dd06aa5a74f909ebf568f; version=3.7

Published CVSS scores

8.8Linux kernel CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-191Integer Underflow (Wrap or Wraparound)
T1499Endpoint Denial of Service

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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