CVE-2025-21815

HIGH EPSS 7.7%
Published Feb 27, 20251y ago · Modified Jun 17, 20261w ago
7.1 CVSS 3.1
High
Find Similar
Published Feb 27, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
7.1
Exploitability
1.8
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
7.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 2

VendorProductVersionRange
linuxlinux_kernel*≥6.7  –  <6.12.14
linuxlinux_kernel*≥6.13  –  <6.13.3

References 3

  • git.kernel.org https://git.kernel.org/stable/c/10b7d3eb535098ccd4c82a182a33655d8a0e5c88
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4491159774d973a9e2e998d25d8fbb20fada6dfa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d1366e74342e75555af2648a2964deb2d5c92200
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/10b7d3eb535098ccd4c82a182a33655d8a0e5c88
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4491159774d973a9e2e998d25d8fbb20fada6dfa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d1366e74342e75555af2648a2964deb2d5c92200
    Patch