iommufd: Prevent ALIGN() overflow
In the Linux kernel, the following vulnerability has been resolved: iommufd: Prevent ALIGN() overflow When allocating IOVA the candidate range gets aligned to the target alignment. If the range is close to ULONG_MAX then the ALIGN() can wrap resulting in a corrupted iova. Open code the ALIGN() using get_add_overflow() to prevent this. This simplifies the checks as we don't need to check for length earlier either. Consolidate the two copies of this code under a single helper. This bug would allow userspace to create a mapping that overlaps with some other mapping or a reserved range.
CVE-2025-38688
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-2025-38688
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": "51fe6141f0f64ae0bbc096a41a07572273e8c0ef",
"lessThan": "d19b817540c0abe84854a64ee9ee34cecc3bbeef",
"versionType": "git"
},
{
"status": "affected",
"version": "51fe6141f0f64ae0bbc096a41a07572273e8c0ef",
"lessThan": "ebb6021560b94649bec6b8faba6fe0dca2218e81",
"versionType": "git"
},
{
"status": "affected",
"version": "51fe6141f0f64ae0bbc096a41a07572273e8c0ef",
"lessThan": "e42a046bb41dcdde4f766a17d8211842007ed537",
"versionType": "git"
},
{
"status": "affected",
"version": "51fe6141f0f64ae0bbc096a41a07572273e8c0ef",
"lessThan": "79fad1917802c28de51a479318a056a6fbe3e2f2",
"versionType": "git"
},
{
"status": "affected",
"version": "51fe6141f0f64ae0bbc096a41a07572273e8c0ef",
"lessThan": "b42497e3c0e74db061eafad41c0cd7243c46436b",
"versionType": "git"
}
],
"programFiles": [
"drivers/iommu/iommufd/io_pagetable.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.103",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.43",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.15.11",
"versionType": "semver",
"lessThanOrEqual": "6.15.*"
},
{
"status": "unaffected",
"version": "6.16.2",
"versionType": "semver",
"lessThanOrEqual": "6.16.*"
},
{
"status": "unaffected",
"version": "6.17",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/iommu/iommufd/io_pagetable.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-38688
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30610 · Revision 1
- Added to Heist Feed
- Publisher date