CVE-2026-74644 (GCVE-0-2026-74644)
Vulnerability from cvelistv5
Published
2026-08-22 15:32
Modified
2026-08-23 12:47
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
mm/damon/ops-common: putback folios on invalid migrate nid
damon_pa_migrate() and damos_va_migrate() isolate folios into a local list
and then call damon_migrate_pages(). When target_nid is invalid
(including the scheme default NUMA_NO_NODE / -1), damon_migrate_pages()
returns early without putting the folios back to the LRU.
Callers then discard the list head while those folios remain isolated with
an extra reference taken by folio_isolate_lru(). The pages stay off the
LRU for as long as the mapping exists (anon active+inactive counts drop
while RSS does not), and the leftover references can pin the pages after
the mapping is gone.
Put the folios back on the invalid-nid path so ignored migration requests
still return them to the LRU.
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 7c303fa1f311aadc17fa82b7bbf776412adf45de Version: 7e6c3130690a01076efdf45aa02ba5d5c16849a0 Version: 7e6c3130690a01076efdf45aa02ba5d5c16849a0 Version: 7e6c3130690a01076efdf45aa02ba5d5c16849a0 Version: 9d0c2d15aff96746f99a7c97221bb8ce5b62db19 Version: 6.12.44 ≤ Version: 6.16.4 ≤ |
||
{
"containers": {
"cna": {
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{
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"product": "Linux",
"programFiles": [
"mm/damon/ops-common.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"status": "affected",
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"versionType": "git"
},
{
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{
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{
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{
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"status": "affected",
"version": "6.12.44",
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{
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}
]
},
{
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"product": "Linux",
"programFiles": [
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"version": "0",
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{
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"version": "6.18.45",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.9",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.105",
"versionStartIncluding": "6.12.44",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.45",
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"vulnerable": true
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{
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{
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},
{
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"versionStartIncluding": "6.16.4",
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/ops-common: putback folios on invalid migrate nid\n\ndamon_pa_migrate() and damos_va_migrate() isolate folios into a local list\nand then call damon_migrate_pages(). When target_nid is invalid\n(including the scheme default NUMA_NO_NODE / -1), damon_migrate_pages()\nreturns early without putting the folios back to the LRU.\n\nCallers then discard the list head while those folios remain isolated with\nan extra reference taken by folio_isolate_lru(). The pages stay off the\nLRU for as long as the mapping exists (anon active+inactive counts drop\nwhile RSS does not), and the leftover references can pin the pages after\nthe mapping is gone.\n\nPut the folios back on the invalid-nid path so ignored migration requests\nstill return them to the LRU."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-23T12:47:57.298Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/7001c0a1bc9018cd5b2b72ebebb216d738b2ec81"
},
{
"url": "https://git.kernel.org/stable/c/460181e4bb47a57776c64f0832c2096de8878cb3"
},
{
"url": "https://git.kernel.org/stable/c/cfef454862b7d2776e0955b873dd59af6b47cfcb"
},
{
"url": "https://git.kernel.org/stable/c/5deb65c34e682e7c5f5df417a70e223e8fcc5f5a"
}
],
"title": "mm/damon/ops-common: putback folios on invalid migrate nid",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-74644",
"datePublished": "2026-08-22T15:32:21.899Z",
"dateReserved": "2026-08-15T05:44:03.923Z",
"dateUpdated": "2026-08-23T12:47:57.298Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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