iommu/amd: Fix clone_alias() to use the original device's devid
Impact
In the Linux kernel, the following vulnerability has been resolved:
Source excerpt · LinuxAffected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
Linux · Linux
Linux
8 ranges
Linux · Linux
Linux
Compare with this publisher’s ranges. This does not inspect your installation.
affected
3332364e4ebc0581d133a334645a20fd13b580f1 → before 880a2e6c887c8f51870c0a00dfba3c8519178b65
git versions
3332364e4ebc0581d133a334645a20fd13b580f1 → before 166a08644aa509e5d27e154d7fa774f4181df9e0
git versions
3332364e4ebc0581d133a334645a20fd13b580f1 → before dbd76a537d8cb814e7f5b795ab21ecb7949c821d
git versions
3332364e4ebc0581d133a334645a20fd13b580f1 → before 20b3c566e2702e5d4d0545be8a97029a2eebcc0e
git versions
3332364e4ebc0581d133a334645a20fd13b580f1 → before dae251ff11d2d2208a029f98923756831cefec46
git versions
3332364e4ebc0581d133a334645a20fd13b580f1 → before faad224fe0f0857a04ff2eb3c90f0de57f47d0f3
git versions
1f03a258f20f1699ede29bb40804074db9398a0d
git versions
5.4.17 → before 5.5
semver versions
Other versions: unaffected
Linux · Linux
Linux
8 ranges
Linux · Linux
Linux
Compare with this publisher’s ranges. This does not inspect your installation.
affected
5.5
unaffected
0 → before 5.5
semver versions
6.1.191 → through 6.1.*
semver versions
6.6.160 → through 6.6.*
semver versions
6.12.91 → through 6.12.*
semver versions
6.18.33 → through 6.18.*
semver versions
7.0.10 → through 7.0.*
semver versions
7.1 → through *
original_commit_for_fix versions
Other versions: affected
Original source description
In the Linux kernel, the following vulnerability has been resolved:
iommu/amd: Fix clone_alias() to use the original device's devid
Currently clone_alias() assumes first argument (pdev) is always the original device pointer. This function is called by pci_for_each_dma_alias() which based on topology decides to send original or alias device details in first argument.
This meant that the source devid used to look up and copy the DTE may be incorrect, leading to wrong or stale DTE entries being propagated to alias device.
Fix this by passing the original pdev as the opaque data argument to both the direct clone_alias() call and pci_for_each_dma_alias(). Inside clone_alias(), retrieve the original device from data and compute devid from it.
Inside the record
Evidence available
Describes the evidence in this view, not whether the product is safe.
Original records
CVE-2026-53053View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.
cve.new JSON →Underlying weaknesses
The source’s classification of what caused the vulnerability.
Environment requirements
These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.
Linux · platform conditions
Any condition may hold
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 5.5
Before: 6.1.191
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 5.5
Before: 6.6.160
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 5.5
Before: 6.12.91
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 5.5
Before: 6.18.33
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 5.5
Before: 7.0.10
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 5.5
Before: 7.1
Vulnerable product
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*From (inclusive): 5.4.17
Original applicability statements
[
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.5",
"versionEndExcluding": "6.1.191"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.5",
"versionEndExcluding": "6.6.160"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.5",
"versionEndExcluding": "6.12.91"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.5",
"versionEndExcluding": "6.18.33"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.5",
"versionEndExcluding": "7.0.10"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.5",
"versionEndExcluding": "7.1"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.4.17"
}
]
}
]
}
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What changed
Follow changesLarge field values are marked as truncated previews. Original source snapshots remain retained.