Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.7, < 6.12.14 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/10b7d3eb535098ccd4c82a182a33655d8a0e5c88Patch
- https://git.kernel.org/stable/c/4491159774d973a9e2e998d25d8fbb20fada6dfaPatch
- https://git.kernel.org/stable/c/d1366e74342e75555af2648a2964deb2d5c92200Patch
FAQ
What is CVE-2025-21815?
CVE-2025-21815 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 i...
How severe is CVE-2025-21815?
CVE-2025-21815 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-21815?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.