CVE-2026-74644
mm/damon/ops-common: putback folios on invalid migrate nid
Description
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.
INFO
Published Date :
Aug. 22, 2026, 4:16 p.m.
Last Modified :
Aug. 22, 2026, 4:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Ensure folios are returned to LRU on invalid NID.
- Update the Linux kernel to the patched version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-74644.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74644 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-74644
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-74644 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74644 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 22, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '7e6c3130690a01076efdf45aa02ba5d5c16849a0', 'lessThan': '460181e4bb47a57776c64f0832c2096de8878cb3', 'versionType': 'git'}, {'status': 'affected', 'version': '7e6c3130690a01076efdf45aa02ba5d5c16849a0', 'lessThan': 'cfef454862b7d2776e0955b873dd59af6b47cfcb', 'versionType': 'git'}, {'status': 'affected', 'version': '7e6c3130690a01076efdf45aa02ba5d5c16849a0', 'lessThan': '5deb65c34e682e7c5f5df417a70e223e8fcc5f5a', 'versionType': 'git'}, {'status': 'affected', 'version': '7c303fa1f311aadc17fa82b7bbf776412adf45de', 'versionType': 'git'}, {'status': 'affected', 'version': '9d0c2d15aff96746f99a7c97221bb8ce5b62db19', 'versionType': 'git'}, {'status': 'affected', 'version': '6.12.44', 'lessThan': '6.13', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.16.4', 'lessThan': '6.17', 'versionType': 'semver'}], 'programFiles': ['mm/damon/ops-common.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.17'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.17', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.45', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.9', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['mm/damon/ops-common.c'], 'defaultStatus': 'affected'}] Added Description 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. Added Reference https://git.kernel.org/stable/c/460181e4bb47a57776c64f0832c2096de8878cb3 Added Reference https://git.kernel.org/stable/c/5deb65c34e682e7c5f5df417a70e223e8fcc5f5a Added Reference https://git.kernel.org/stable/c/cfef454862b7d2776e0955b873dd59af6b47cfcb