Medium [CVE-2026-72169] make sure scratch size is always aligned by CMA_MIN_ALIGNMENT_BYTES
This medium-severity Red Hat Linux advisory covers CVE-2026-72169.
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Summary
A flaw was found in the Linux kernel's 'kho' component, responsible for memory management. When a user specifies fixed scratch sizes via the command line, these sizes are not consistently aligned to 'CMA_MIN_ALIGNMENT_BYTES'.
This can result in the kernel releasing a pageblock that is only partially used for scratch, potentially leading to memory corruption or system instability. Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-131. Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
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