CVE-2025-21724 (GCVE-0-2025-21724)

Vulnerability from cvelistv5 – Published: 2025-02-27 02:07 – Updated: 2026-05-12 12:03
VLAI
Title
iommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index()
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 , < 44d9c94b7a3f29a3e07c4753603a35e9b28842a3 (git)
Affected: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 , < 38ac76fc06bc6826a3e4b12a98efbe98432380a9 (git)
Affected: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 , < d5d33f01b86af44b23eea61ee309e4ef22c0cdfe (git)
Affected: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 , < b1f8453b8ff1ab79a03820ef608256c499769cb6 (git)
Affected: 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 , < e24c1551059268b37f6f40639883eafb281b8b9c (git)
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Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.129 , ≤ 6.1.* (semver)
Unaffected: 6.6.76 , ≤ 6.6.* (semver)
Unaffected: 6.12.13 , ≤ 6.12.* (semver)
Unaffected: 6.13.2 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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Detection rules are retrieved from Rulezet.