x86/amd_node: Fix PCI device reference counting in amd_smn_init()
In the Linux kernel, the following vulnerability has been resolved: x86/amd_node: Fix PCI device reference counting in amd_smn_init() The local "root" pointer is a temporary variable used during the device search. Therefore, refcount related to the search iterators should be cleaned up after the search is complete. Use the __free() cleanup macro to ensure the refcount is decremented when the temporary pointer goes out of scope. Additionally, increment the refcount when caching a root pointer. This ensures the in-use refcount is separate from the temporary search refcounting. Finally, drop the redundant "root = NULL" before the second search loop. The pci_get_class() iterator always decrements the refcount of its "from" argument, so the first loop can only fall through with "root" already NULL.
CVE-2026-97946
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-2026-97946
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": "0a4b61d9c2e496b5f0a10e29e355a1465c8738bb",
"lessThan": "84e3a71d11d8593c127b468d75b2653af5074f81",
"versionType": "git"
},
{
"status": "affected",
"version": "0a4b61d9c2e496b5f0a10e29e355a1465c8738bb",
"lessThan": "aa2a4277ad42fd8f918c6dc652473946a253f7b0",
"versionType": "git"
},
{
"status": "affected",
"version": "0a4b61d9c2e496b5f0a10e29e355a1465c8738bb",
"lessThan": "27600805e62f800bacf990354632eae4e487d34c",
"versionType": "git"
},
{
"status": "affected",
"version": "c4ad899a33198ab6335732c769835d035e66894a",
"versionType": "git"
},
{
"status": "affected",
"version": "6.17.8",
"lessThan": "6.18",
"versionType": "semver"
}
],
"programFiles": [
"arch/x86/kernel/amd_node.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/x86/kernel/amd_node.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97946
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38089 · Revision 1
- Added to Heist Feed
- Publisher date