CVE-2026-93063

Kernel memory corruption via oversized SAP message

Published Sep 17, 2026 · Updated Sep 18, 2026

Buffer overflow in the iwlwifi MEI component of affected Linux kernel releases allows attackers to corrupt kernel memory via an oversized SAP message. The driver reads a SAP message into a local buffer without first rejecting a length larger than that buffer. The vulnerable path requires the iwlwifi MEI integration to process such a message; no resulting crash, code execution, or data exposure is specified.

CVSS severity8.4
High
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in the iwlwifi MEI component of affected Linux kernel releases allows attackers to corrupt kernel memory via an oversized SAP message. The driver reads a SAP message into a local buffer without first rejecting a length larger than that buffer. The vulnerable path requires the iwlwifi MEI integration to process such a message; no resulting crash, code execution, or data exposure is specified.

The record

CVE
CVE-2026-93063
Published
Sep 17, 2026
Updated
Sep 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=6.0.16 <6.1
  2. Affected versionversion=6.1.2 <6.1.188
  3. Affected versionversion=6.2
  4. Affected versionversion=9f71cebcac2148e68d0d67f113d0f9aabfcc7a2a
  5. Affected versionversion=a29e442ee110aafdf7785fac6de44b22d3da43db <a4034f1cc8a422cefc519290d8e6cfb7ff773586
  6. Affected versionversion=bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e <242125bbf19a2974d22f3d5025c9c14c0a4aea58
  7. Affected versionversion=bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e <7d8cc301bcba233f31b589a45f4c1c97f2bb90d6
  8. Affected versionversion=bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e <9c6bea89a16815688a5240dd4a74c922a92fcdc3
  9. Affected versionversion=bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e <b90ebae632318dc2e5cd4ac96e454ec50f705579
  10. Affected versionversion=bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e <f7f770d12e6e928006f89a59291074e5fea82886

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0.16 <6.1; version=6.1.2 <6.1.188; version=6.2; version=9f71cebcac2148e68d0d67f113d0f9aabfcc7a2a; version=a29e442ee110aafdf7785fac6de44b22d3da43db <a4034f1cc8a422cefc519290d8e6cfb7ff773586; version=bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e <242125bbf19a2974d22f3d5025c9c14c0a4aea58; version=bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e <7d8cc301bcba233f31b589a45f4c1c97f2bb90d6; version=bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e <9c6bea89a16815688a5240dd4a74c922a92fcdc3; version=bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e <b90ebae632318dc2e5cd4ac96e454ec50f705579; version=bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e <f7f770d12e6e928006f89a59291074e5fea82886

Published CVSS scores

8.4NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

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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