CVE-2026-72169
N/A
N/A
Summary
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().
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 3dc92c311498c4d307cfdd0c6c3ac9355b50f683 < b8271be34bce151597da5b5179e0648c281322a4 | affected |
| Linux | Linux | 3dc92c311498c4d307cfdd0c6c3ac9355b50f683 < 9fefab759f59bf891bef7be15aee4bc7caec7ec3 | affected |
| Linux | Linux | 3dc92c311498c4d307cfdd0c6c3ac9355b50f683 < 0e39380a7316122e1b00012b3f3cd3e318b3e7d3 | affected |
| Linux | Linux | 6.16 | affected |
| Linux | Linux | 0 < 6.16 | unaffected |
| Linux | Linux | 6.18.42 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.5 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/b8271be34bce151597da5b5179e0648c281322a4
- https://git.kernel.org/stable/c/9fefab759f59bf891bef7be15aee4bc7caec7ec3
- https://git.kernel.org/stable/c/0e39380a7316122e1b00012b3f3cd3e318b3e7d3
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