CVE-2025-21724

Advisory lineage Upstream: 0 Downstream: 25
Modified
Published: 27 Feb 2025, 02:07
Last modified:12 May 2026, 12:03

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.03% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Feb 2025, 02:07
Published
Vulnerability first disclosed
12 May 2026, 12:03
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: iommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index() Resolve a UBSAN shift-out-of-bounds issue in iova_bitmap_offset_to_index() where shifting the constant "1" (of type int) by bitmap->mapped.pgshift (an unsigned long value) could result in undefined behavior. The constant "1" defaults to a 32-bit "int", and when "pgshift" exceeds 31 (e.g., pgshift = 63) the shift operation overflows, as the result cannot be represented in a 32-bit type. To resolve this, the constant is updated to "1UL", promoting it to an unsigned long type to match the operand's type.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.03%• Percentile: 8%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

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

Affected Systems

  • linux•linux

    ≥ 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1, < 44d9c94b7a3f29a3e07c4753603a35e9b28842a3 | ≥ 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1, < 38ac76fc06bc6826a3e4b12a98efbe98432380a9 | ≥ 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1, < d5d33f01b86af44b23eea61ee309e4ef22c0cdfe | ≥ 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1, < b1f8453b8ff1ab79a03820ef608256c499769cb6 | ≥ 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1, < e24c1551059268b37f6f40639883eafb281b8b9c | 6.1

  • linux•linux_kernel

    ≥ 6.1, < 6.1.129 | ≥ 6.2, < 6.6.76 | ≥ 6.7, < 6.12.13 | ≥ 6.13, < 6.13.2

References (7)