CVE-2025-21724
- Source
- https://cve.org/CVERecord?id=CVE-2025-21724
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21724.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-21724
- Downstream
- Related
- Published
- 2025-02-27T02:07:31.630Z
- Modified
- 2026-05-15T11:54:40.869537975Z
- Summary
- iommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
iommufd/iovabitmap: Fix shift-out-of-bounds in iovabitmapoffsetto_index()
Resolve a UBSAN shift-out-of-bounds issue in iovabitmapoffsettoindex() 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.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21724.json", "cna_assigner": "Linux" }- References
-
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://git.kernel.org/stable/c/38ac76fc06bc6826a3e4b12a98efbe98432380a9
- https://git.kernel.org/stable/c/44d9c94b7a3f29a3e07c4753603a35e9b28842a3
- https://git.kernel.org/stable/c/b1f8453b8ff1ab79a03820ef608256c499769cb6
- https://git.kernel.org/stable/c/d5d33f01b86af44b23eea61ee309e4ef22c0cdfe
- https://git.kernel.org/stable/c/e24c1551059268b37f6f40639883eafb281b8b9c
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21724.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-21724
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git