CVE-2026-53022

Kernel memory corruption via unbounded string aggregation

Published Jun 24, 2026 · Updated Jun 24, 2026

Buffer overflow in the dell-wmi-sysman driver in Linux Kernel allows local users to interrupt service through oversized firmware enumeration data. populate_enum_data() appends firmware-provided value-modifier and possible-value strings plus separators with raw strcat() into fixed 512-byte fields without tracking remaining capacity. Exploitation requires low-privileged local access and a Dell WMI enumeration package whose combined strings exceed a destination field.

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

Buffer overflow in the dell-wmi-sysman driver in Linux Kernel allows local users to interrupt service through oversized firmware enumeration data. populate_enum_data() appends firmware-provided value-modifier and possible-value strings plus separators with raw strcat() into fixed 512-byte fields without tracking remaining capacity. Exploitation requires low-privileged local access and a Dell WMI enumeration package whose combined strings exceed a destination field.

The record

CVE
CVE-2026-53022
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
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

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=5.11
  2. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <3c34471c26abc52a37f5ad90949e2e4b8027eb14
  3. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <5a04f9a36930792f6d64e28d43609e158d09b665
  4. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <75c738d4f27fa18a2a033de153bd40302bde6a66
  5. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <7b3dc1f764bf24eb99474a5de8173b0b43a8b071
  6. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <90b118d264845f7aaf539ac49f7c75f1f29590e2
  7. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <ba0843c1955864401295f7ba3b420afe19f2266d
  8. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <c5683ca4949a514fbe656c6d0d08c4c126e21db9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.11; version=e8a60aa7404bfef37705da5607c97737073ac38d <3c34471c26abc52a37f5ad90949e2e4b8027eb14; version=e8a60aa7404bfef37705da5607c97737073ac38d <5a04f9a36930792f6d64e28d43609e158d09b665; version=e8a60aa7404bfef37705da5607c97737073ac38d <75c738d4f27fa18a2a033de153bd40302bde6a66; version=e8a60aa7404bfef37705da5607c97737073ac38d <7b3dc1f764bf24eb99474a5de8173b0b43a8b071; version=e8a60aa7404bfef37705da5607c97737073ac38d <90b118d264845f7aaf539ac49f7c75f1f29590e2; version=e8a60aa7404bfef37705da5607c97737073ac38d <ba0843c1955864401295f7ba3b420afe19f2266d; version=e8a60aa7404bfef37705da5607c97737073ac38d <c5683ca4949a514fbe656c6d0d08c4c126e21db9

Published CVSS scores

5.5NVDCVSS: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

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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