Riskcovery

CVE-2026-72169

kho: make sure scratch size is always aligned by CMA_MIN_ALIGNMENT_BYTES

State
Published
Severity
Not scored
Published
Aug 15, 2026
Updated
Aug 17, 2026
Reserved
Aug 9, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

kho: make sure scratch size is always aligned by CMA_MIN_ALIGNMENT_BYTES

When using scratch_scale, the scratch sizes are rounded up to CMA_MIN_ALIGNMENT_BYTES since they will be released as MIGRATE_CMA. This is not done when using fixed scratch sizes via command line. This can result in user specifying a size which is not aligned, and thus kernel releasing a pageblock that is only partially scratch.

Do the rounding up for both cases in scratch_size_update().

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 3dc92c311498c4d307cfdd0c6c3ac9355b50f683 to before b8271be34bce151597da5b5179e0648c281322a4Affected
  • 3dc92c311498c4d307cfdd0c6c3ac9355b50f683 to before 9fefab759f59bf891bef7be15aee4bc7caec7ec3Affected
  • 3dc92c311498c4d307cfdd0c6c3ac9355b50f683 to before 0e39380a7316122e1b00012b3f3cd3e318b3e7d3Affected
LinuxLinux
  • 6.16Affected
  • before 6.16Not affected
  • 6.18.42 through 6.18.*Not affected
  • 7.1.5 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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