CVE-2026-53093

Local crash via unchecked error-pointer dereference

Published Jun 24, 2026 · Updated Jun 24, 2026

Error-pointer dereference in the brcmfmac driver in affected Linux Kernel releases allows local users to crash the system. brcmf_chip_recognition() dereferences a value returned by brcmf_chip_add_core() without first rejecting an ERR_PTR result. The path requires local low-privileged access and execution of affected Broadcom FullMAC chip recognition; the fault interrupts the host rather than granting code execution.

CVSS severity5.5
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Error-pointer dereference in the brcmfmac driver in affected Linux Kernel releases allows local users to crash the system. brcmf_chip_recognition() dereferences a value returned by brcmf_chip_add_core() without first rejecting an ERR_PTR result. The path requires local low-privileged access and execution of affected Broadcom FullMAC chip recognition; the fault interrupts the host rather than granting code execution.

The record

CVE
CVE-2026-53093
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 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=3.15
  2. Affected versionversion=cb7cf7be9eba76f3cd6258906074c72084570c84 <2e0e5a43ed126f896a4ad31ade66c90270601bae
  3. Affected versionversion=cb7cf7be9eba76f3cd6258906074c72084570c84 <334c68750eee84c2327db1d152be83ff5ad8e20b
  4. Affected versionversion=cb7cf7be9eba76f3cd6258906074c72084570c84 <99ef547659178eef6d6ba4738a9d989ce90cf909
  5. Affected versionversion=cb7cf7be9eba76f3cd6258906074c72084570c84 <a3b45090a91e2f0b9715870d8f8d9ca2fdfbc1af
  6. Affected versionversion=cb7cf7be9eba76f3cd6258906074c72084570c84 <bd6c906e0c4af6d5d0c49c3c4ee090b4913da17d
  7. Affected versionversion=cb7cf7be9eba76f3cd6258906074c72084570c84 <cbea71b4480394708f9a6e007a0385acfe5e1ec8
  8. Affected versionversion=cb7cf7be9eba76f3cd6258906074c72084570c84 <d3f280be48f1c672cb10e8026c236d0cca60048a
  9. Affected versionversion=cb7cf7be9eba76f3cd6258906074c72084570c84 <dd8592fc6007a451c3e4b9025de365e39de8178a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3.15; version=cb7cf7be9eba76f3cd6258906074c72084570c84 <2e0e5a43ed126f896a4ad31ade66c90270601bae; version=cb7cf7be9eba76f3cd6258906074c72084570c84 <334c68750eee84c2327db1d152be83ff5ad8e20b; version=cb7cf7be9eba76f3cd6258906074c72084570c84 <99ef547659178eef6d6ba4738a9d989ce90cf909; version=cb7cf7be9eba76f3cd6258906074c72084570c84 <a3b45090a91e2f0b9715870d8f8d9ca2fdfbc1af; version=cb7cf7be9eba76f3cd6258906074c72084570c84 <bd6c906e0c4af6d5d0c49c3c4ee090b4913da17d; version=cb7cf7be9eba76f3cd6258906074c72084570c84 <cbea71b4480394708f9a6e007a0385acfe5e1ec8; version=cb7cf7be9eba76f3cd6258906074c72084570c84 <d3f280be48f1c672cb10e8026c236d0cca60048a; version=cb7cf7be9eba76f3cd6258906074c72084570c84 <dd8592fc6007a451c3e4b9025de365e39de8178a

Published CVSS scores

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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