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CVE-2025-21815

mm/compaction: fix UBSAN shift-out-of-bounds warning PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: mm/compaction: fix UBSAN shift-out-of-bounds warning syzkaller reported a UBSAN shift-out-of-bounds warning of (1UL << order) in isolate_freepages_block(). The bogus compound_order can be any value because it is union with flags. Add back the MAX_PAGE_ORDER check to fix the warning.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 3da0272a4c7d0d37b47b28e87014f421296fc2be before 4491159774d973a9e2e998d25d8fbb20fada6dfa; affected 3da0272a4c7d0d37b47b28e87014f421296fc2be before 10b7d3eb535098ccd4c82a182a33655d8a0e5c88; affected 3da0272a4c7d0d37b47b28e87014f421296fc2be before d1366e74342e75555af2648a2964deb2d5c92200
Linux / Linuxaffected 6.7; unaffected 0 before 6.7; unaffected 6.12.14 through 6.12.*; unaffected 6.13.3 through 6.13.*; unaffected 6.14 through *

CWE

No CWE identifiers supplied.

References