iommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index()
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.
CVE-2025-21724
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-21724
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "58ccf0190d19d9a8a41f8a02b9e06742b58df4a1",
"lessThan": "44d9c94b7a3f29a3e07c4753603a35e9b28842a3",
"versionType": "git"
},
{
"status": "affected",
"version": "58ccf0190d19d9a8a41f8a02b9e06742b58df4a1",
"lessThan": "38ac76fc06bc6826a3e4b12a98efbe98432380a9",
"versionType": "git"
},
{
"status": "affected",
"version": "58ccf0190d19d9a8a41f8a02b9e06742b58df4a1",
"lessThan": "d5d33f01b86af44b23eea61ee309e4ef22c0cdfe",
"versionType": "git"
},
{
"status": "affected",
"version": "58ccf0190d19d9a8a41f8a02b9e06742b58df4a1",
"lessThan": "b1f8453b8ff1ab79a03820ef608256c499769cb6",
"versionType": "git"
},
{
"status": "affected",
"version": "58ccf0190d19d9a8a41f8a02b9e06742b58df4a1",
"lessThan": "e24c1551059268b37f6f40639883eafb281b8b9c",
"versionType": "git"
}
],
"programFiles": [
"drivers/iommu/iommufd/iova_bitmap.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.1"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.129",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.76",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.13",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.13.2",
"versionType": "semver",
"lessThanOrEqual": "6.13.*"
},
{
"status": "unaffected",
"version": "6.14",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/iommu/iommufd/iova_bitmap.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-21724
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #26921 · Revision 1
- Added to Heist Feed
- Publisher date