CVE-2026-53189: mm/huge_memory: update file PMD counter before folio_put()

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• linux linux kernel4.19 and later · before 5.10.259
• linux linux kernel5.11 and later · before 5.15.210
• linux linux kernel5.16 and later · before 6.1.176
• linux linux kernel6.2 and later · before 6.6.143
• linux linux kernel6.7 and later · before 6.12.94
• linux linux kernel6.13 and later · before 6.18.36
• linux linux kernel6.19 and later · before 7.0.13
• linux linux kernel7.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

• Linux Linux

  • 4.19affected
  • fadae2953072e9005c5f1d64e1049edb043494dc and later · before 84b3212b166b446faea27ebebb7161405ffceef9affected · git
  • fadae2953072e9005c5f1d64e1049edb043494dc and later · before 108963978a681c0c468d279cac2b930c27672877affected · git
  • fadae2953072e9005c5f1d64e1049edb043494dc and later · before 459771c9cf30f378bdbd30fc65d17f7eb931bb59affected · git
  • fadae2953072e9005c5f1d64e1049edb043494dc and later · before ae9d4caf6f133e884cf5fcda4982c493b35e5194affected · git
  • fadae2953072e9005c5f1d64e1049edb043494dc and later · before 6c29a8ba084e89499ca77b947e07ae817f9c16ceaffected · git
  • fadae2953072e9005c5f1d64e1049edb043494dc and later · before 5f5b604e1e6bde4e889199168ee80fe8306d06adaffected · git
  • fadae2953072e9005c5f1d64e1049edb043494dc and later · before ed5b030931292c94133437ac5e5ff580e498eabdaffected · git
  • fadae2953072e9005c5f1d64e1049edb043494dc and later · before 8d878059924f12c1bc24556a92ec56add74de3c8affected · git
  • before 4.19not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
  90Now
• CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
  89Now
• CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
  85Now

Published before and after this one in the same product

• ← EarlierCVE-2026-53187Jun 25, 2026 · RDMA/core: Validate cpu_id against nr_cpu_ids in DMAH alloc
  28Monitor
• ← EarlierCVE-2026-53188Jun 25, 2026 · RDMA/core: Validate the passed in fops for ib_get_ucaps()
  35Monitor
• Later →CVE-2026-53191Jun 25, 2026 · io_uring/net: inherit IORING_CQE_F_BUF_MORE across bundle recv retries
  31Monitor

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.