Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 before 44d9c94b7a3f29a3e07c4753603a35e9b28842a3; affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 before 38ac76fc06bc6826a3e4b12a98efbe98432380a9; affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 before d5d33f01b86af44b23eea61ee309e4ef22c0cdfe; affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 before b1f8453b8ff1ab79a03820ef608256c499769cb6; affected 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 before e24c1551059268b37f6f40639883eafb281b8b9c |
| Linux / Linux | affected 6.1; unaffected 0 before 6.1; unaffected 6.1.129 through 6.1.*; unaffected 6.6.76 through 6.6.*; unaffected 6.12.13 through 6.12.*; unaffected 6.13.2 through 6.13.*; unaffected 6.14 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/44d9c94b7a3f29a3e07c4753603a35e9b28842a3
- https://git.kernel.org/stable/c/38ac76fc06bc6826a3e4b12a98efbe98432380a9
- https://git.kernel.org/stable/c/d5d33f01b86af44b23eea61ee309e4ef22c0cdfe
- https://git.kernel.org/stable/c/b1f8453b8ff1ab79a03820ef608256c499769cb6
- https://git.kernel.org/stable/c/e24c1551059268b37f6f40639883eafb281b8b9c
ADP enrichment
No English description supplied.
No English description supplied.