CVE-2026-53022: platform/x86: dell-wmi-sysman: bound enumeration string aggregation
In the Linux kernel, the following vulnerability has been resolved:
platform/x86: dell-wmi-sysman: bound enumeration string aggregation
populateenumdata() aggregates firmware-provided value-modifier and possible-value strings into fixed 512-byte struct members. The current code bounds each individual source string but then appends every string and separator with raw strcat() and no remaining-space check.
Switch the aggregation loops to a bounded append helper and reject enumeration packages whose combined strings do not fit in the destination buffers.
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Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.143.1-1 - Compensating control
Update the Linux kernel code in platform/x86/dell-wmi-sysman so that populate_enum_data() aggregates firmware-provided value-modifier strings using a bounded append helper instead of unbounded raw strcat(), storing results in fixed 512-byte struct members and rejecting enumeration packages whose combined strings do not fit remaining space.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-53022?
The severity of CVE-2026-53022 is medium with a score of 5.5.
How do I fix CVE-2026-53022?
To fix CVE-2026-53022, update your Linux kernel to the latest version provided by your distribution that addresses this vulnerability.
What systems are affected by CVE-2026-53022?
CVE-2026-53022 affects systems running the Linux kernel, including specific versions used in Microsoft azl3 kernel.
What type of vulnerability is CVE-2026-53022?
CVE-2026-53022 is a bound enumeration string aggregation vulnerability in the Linux kernel.
What are the potential impacts of CVE-2026-53022?
The potential impacts of CVE-2026-53022 include denial of service due to improper handling of firmware-provided strings.