iommu/sva: Set handle->dev before the SVA handle is visible
In the Linux kernel, the following vulnerability has been resolved: iommu/sva: Set handle->dev before the SVA handle is visible iommu_attach_device_pasid() installs the new SVA attach handle in the group PASID lookup before iommu_sva_bind_device() returns. A concurrent bind can therefore find and reuse the same handle after iommu_sva_lock is dropped. handle->dev was initialized after dropping iommu_sva_lock. This leaves a window where a racing bind can return a handle whose dev pointer is still NULL. A subsequent iommu_sva_unbind_device() can then dereference it via handle->dev->iommu_group. Initialize handle->dev before releasing iommu_sva_lock so any visible SVA handle is fully initialized.
CVE-2026-89451
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-2026-89451
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": "be51b1d6bbff48c7d1943a8ff1e5a55777807f6e",
"lessThan": "c4c71368bc5c5b3840590d39b4cfa12d733cadf4",
"versionType": "git"
},
{
"status": "affected",
"version": "be51b1d6bbff48c7d1943a8ff1e5a55777807f6e",
"lessThan": "bcffb1c75da8fc9d51168ff9f09d471c26507912",
"versionType": "git"
},
{
"status": "affected",
"version": "be51b1d6bbff48c7d1943a8ff1e5a55777807f6e",
"lessThan": "968e9a1f71140c86dc4092f6b361e997923f3813",
"versionType": "git"
},
{
"status": "affected",
"version": "be51b1d6bbff48c7d1943a8ff1e5a55777807f6e",
"lessThan": "37a96a30617a4c96f048a5874c00509bc4fe4d85",
"versionType": "git"
},
{
"status": "affected",
"version": "be51b1d6bbff48c7d1943a8ff1e5a55777807f6e",
"lessThan": "530f8f9c3546cb3ebee1b135375aaee08a073ebb",
"versionType": "git"
}
],
"programFiles": [
"drivers/iommu/iommu-sva.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": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.109",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/iommu/iommu-sva.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89451
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46659 · Revision 1
- Added to Heist Feed
- Publisher date