mm/damon/ops-common: putback folios on invalid migrate nid (CVE-2026-74644) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-74644

mm/damon/ops-common: putback folios on invalid migrate nid

Answer in brief

CVE-2026-74644 records a Unknown severity vulnerability in mm/damon/ops-common: putback folios on invalid migrate nid. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 22, 2026Updated Aug 22, 2026Source checked Aug 22, 2026First seen by HOL Aug 22, 2026Material review Aug 22, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=7e6c3130690a01076efdf45aa02ba5d5c16849a0 <460181e4bb47a57776c64f0832c2096de8878cb3 \|\| >=7e6c3130690a01076efdf45aa02ba5d5c16849a0 <cfef454862b7d2776e0955b873dd59af6b47cfcb \|\| >=7e6c3130690a01076efdf45aa02ba5d5c16849a0 <5deb65c34e682e7c5f5df417a70e223e8fcc5f5a \|\| 7c303fa1f311aadc17fa82b7bbf776412adf45de \|\| 9d0c2d15aff96746f99a7c97221bb8ce5b62db19 \|\| >=6.12.44 <6.13 \|\| >=6.16.4 <6.17	460181e4bb47a57776c64f0832c2096de8878cb3, cfef454862b7d2776e0955b873dd59af6b47cfcb, 5deb65c34e682e7c5f5df417a70e223e8fcc5f5a, 6.13, 6.17
Linux/Linuxgeneric	6.17	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 460181e4bb47a57776c64f0832c2096de8878cb3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 22, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.