CVE-2025-21815

Advisory lineage Upstream: 0 Downstream: 22
Analyzed
Published: 27 Feb 2025, 20:04
Last modified:11 May 2026, 21:07

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7.1 HIGH
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability -0.01%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Feb 2025, 20:04
Published
Vulnerability first disclosed
11 May 2026, 21:07
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 5%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

    The product reads data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • linux•linux

    ≥ 3da0272a4c7d0d37b47b28e87014f421296fc2be, < 4491159774d973a9e2e998d25d8fbb20fada6dfa | ≥ 3da0272a4c7d0d37b47b28e87014f421296fc2be, < 10b7d3eb535098ccd4c82a182a33655d8a0e5c88 | ≥ 3da0272a4c7d0d37b47b28e87014f421296fc2be, < d1366e74342e75555af2648a2964deb2d5c92200 | 6.7

  • linux•linux_kernel

    ≥ 6.7, < 6.12.14 | ≥ 6.13, < 6.13.3

References (3)