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CVE-2026-74644— mm/damon/ops-common: putback folios on invalid migrate nid

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已修复以下漏洞： mm/damon/ops-common：在迁移节点（nid）无效时将页（folios）放回 LRU 列表 和 函数会将页（folios）隔离到一个局部列表中，然后调用 。当目标节点 ID（target_nid）无效时（包括使用 scheme 默认的 / -1）， 会提前返回，而没有将这些页重新放回 LRU（最近最少使用）链表。 调用方随后会丢弃列表头，但这些页仍保持隔离状态，且由于 已获取了额外的引用计数。这些页一直位于 LRU 之外，表现为匿名活跃和非活跃计数下降，而 R

AI Predicted 5.5 Difficulty: Moderate EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 13

VendorProduct Version RangeStatus
Linux Linux 7c303fa1f311aadc17fa82b7bbf776412adf45de< 7001c0a1bc9018cd5b2b72ebebb216d738b2ec81 affected
7e6c3130690a01076efdf45aa02ba5d5c16849a0< 460181e4bb47a57776c64f0832c2096de8878cb3 affected
7e6c3130690a01076efdf45aa02ba5d5c16849a0< cfef454862b7d2776e0955b873dd59af6b47cfcb affected
7e6c3130690a01076efdf45aa02ba5d5c16849a0< 5deb65c34e682e7c5f5df417a70e223e8fcc5f5a affected
9d0c2d15aff96746f99a7c97221bb8ce5b62db19 affected
6.12.44< 6.12.105 affected
6.16.4< 6.17 affected
6.17 affected
… +5 more rows
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I. Basic Information for CVE-2026-74644

Vulnerability Information
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Vulnerability Title
mm/damon/ops-common: putback folios on invalid migrate nid
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 7c303fa1f311aadc17fa82b7bbf776412adf45de ~ 7001c0a1bc9018cd5b2b72ebebb216d738b2ec81 -
Linux Linux 6.17 -

II. Public POCs for CVE-2026-74644

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III. Intelligence Information for CVE-2026-74644

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Patches & Fixes for CVE-2026-74644 (2)

Same Patch Batch · Linux · 2026-08-22 · 150 CVEs total

CVE-2026-74705 10.0 CRITICAL udp: fix potential use-after-free in tunnel segmentation
CVE-2026-74612 10.0 CRITICAL veth: fix skb length accounting after XDP frag adjustment
CVE-2026-74608 9.8 CRITICAL smb: client: Fix use-after-free in cifs_try_adding_channels()
CVE-2026-74591 9.8 CRITICAL mm/filemap: __filemap_add_folio() restore index before retrying
CVE-2026-74611 9.8 CRITICAL tls: rx: restore msg_iter before TLS 1.3 optimistic retry
CVE-2026-74628 9.8 CRITICAL net/x25: fix use-after-free of the socket by its timers
CVE-2026-74669 9.8 CRITICAL ipvs: clear IPv4 options after rebasing tunnel ICMP errors
CVE-2026-74597 9.8 CRITICAL ip6_tunnel: clear skb2->cb[] in ip6ip6_err()
CVE-2026-74662 9.8 CRITICAL inet: frags: publish queues before arming timer
CVE-2026-74587 9.8 CRITICAL sctp: fix use-after-free of cached ASCONF chunk
CVE-2026-74688 9.8 CRITICAL sctp: clear control chunk transport if it is being removed
CVE-2026-74723 9.8 CRITICAL btrfs: lzo: reject inline extents without valid headers
CVE-2026-74617 9.8 CRITICAL dibs: initialise dibs->lock in dibs_dev_alloc()
CVE-2026-74730 9.8 CRITICAL NFS: Pin the 'struct nfs_server' during a FREE_STATEID call
CVE-2026-74727 9.8 CRITICAL ovpn: skip rehash for peers already removed from by_id
CVE-2026-74586 9.8 CRITICAL sctp: clear new_transport when removing a peer
CVE-2026-74616 9.8 CRITICAL xdp: reject clones that overrun skb_shared_info tailroom
CVE-2026-74588 9.8 CRITICAL sctp: keep chunk->transport in step with the list it is queued on
CVE-2026-74712 9.3 CRITICAL vdpa/mlx5: Fix buffer length in create_direct_keys()
CVE-2026-74665 9.1 CRITICAL net: fix skb length accounting after generic XDP frag adjustment

Showing top 20 of 150 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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