mm/smaps: fix race between smaps_hugetlb_range and migration
In the Linux kernel, the following vulnerability has been resolved: mm/smaps: fix race between smaps_hugetlb_range and migration smaps_hugetlb_range() handles the pte without holdling ptl, and may be concurrenct with migration, leaing to BUG_ON in pfn_swap_entry_to_page(). The race is as follows. smaps_hugetlb_range migrate_pages huge_ptep_get remove_migration_ptes folio_unlock pfn_swap_entry_folio BUG_ON To fix it, hold ptl lock in smaps_hugetlb_range().
CVE-2025-39754
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-2025-39754
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": "25ee01a2fca02dfb5a3ce316e77910c468108199",
"lessThan": "f76089018b34dbe0c2e9b67c5b7d8860668748bb",
"versionType": "git"
},
{
"status": "affected",
"version": "25ee01a2fca02dfb5a3ce316e77910c468108199",
"lessThan": "2a1f3663974162b8f1e098196f557cfc1d160138",
"versionType": "git"
},
{
"status": "affected",
"version": "25ee01a2fca02dfb5a3ce316e77910c468108199",
"lessThan": "09fc018f48871123ad5dbd7b03c956580232ed76",
"versionType": "git"
},
{
"status": "affected",
"version": "25ee01a2fca02dfb5a3ce316e77910c468108199",
"lessThan": "b625883ccbcc2b57808db51d1375b1d7b9bcb3e5",
"versionType": "git"
},
{
"status": "affected",
"version": "25ee01a2fca02dfb5a3ce316e77910c468108199",
"lessThan": "45d19b4b6c2d422771c29b83462d84afcbb33f01",
"versionType": "git"
}
],
"programFiles": [
"fs/proc/task_mmu.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"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": [
"fs/proc/task_mmu.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-39754
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46016 · Revision 1
- Added to Heist Feed
- Publisher date