Vulnerability-Lookup

GHSA-P2P8-6FMX-RFJ9

Vulnerability from github – Published: 2026-09-03 15:32 – Updated: 2026-09-03 15:32

Details

In the Linux kernel, the following vulnerability has been resolved:

mm/huge_memory: initialise workingset state before folio split

xas_try_split() adds __GFP_ACCOUNT for page-cache xa_nodes, but __folio_split() leaves the xa_state's xa_lru unset. That lets a live, memcg-charged xa_node exist without being linked into the mapping's shadow_nodes list_lru; when reclaim later walks the list_lru it trips VM_WARN_ON(!css_is_dying()).

Use mapping_set_update() to install both the workingset update callback and the shadow_nodes list_lru on the xa_state.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-80729"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-03T13:06:11Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/huge_memory: initialise workingset state before folio split\n\nxas_try_split() adds __GFP_ACCOUNT for page-cache xa_nodes, but\n__folio_split() leaves the xa_state\u0027s xa_lru unset.  That lets a live,\nmemcg-charged xa_node exist without being linked into the mapping\u0027s\nshadow_nodes list_lru; when reclaim later walks the list_lru it trips\nVM_WARN_ON(!css_is_dying()).\n\nUse mapping_set_update() to install both the workingset update callback\nand the shadow_nodes list_lru on the xa_state.",
  "id": "GHSA-p2p8-6fmx-rfj9",
  "modified": "2026-09-03T15:32:14Z",
  "published": "2026-09-03T15:32:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80729"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aca1f2d5de17e138bc6c4859126b77e516b82541"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d858f7c9fc514f1d9d3be7d00b2dd4e2f2383b55"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-80729 (GCVE-0-2026-80729)

Vulnerability from cvelistv5 – Published: 2026-09-03 08:21 – Updated: 2026-09-03 08:21

Title

mm/huge_memory: initialise workingset state before folio split

Summary

In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: initialise workingset state before folio split xas_try_split() adds __GFP_ACCOUNT for page-cache xa_nodes, but __folio_split() leaves the xa_state's xa_lru unset. That lets a live, memcg-charged xa_node exist without being linked into the mapping's shadow_nodes list_lru; when reclaim later walks the list_lru it trips VM_WARN_ON(!css_is_dying()). Use mapping_set_update() to install both the workingset update callback and the shadow_nodes list_lru on the xa_state.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/d858f7c9fc514f1d9…
https://git.kernel.org/stable/c/aca1f2d5de17e138b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 58729c04cf1092b87aeef0bf0998c9e2e4771133 , < d858f7c9fc514f1d9d3be7d00b2dd4e2f2383b55 (git) Affected: 58729c04cf1092b87aeef0bf0998c9e2e4771133 , < aca1f2d5de17e138bc6c4859126b77e516b82541 (git)
Linux	Linux	Affected: 6.15 Unaffected: 0 , < 6.15 (semver) Unaffected: 7.1.9 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/huge_memory.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"
            },
            {
              "lessThan": "aca1f2d5de17e138bc6c4859126b77e516b82541",
              "status": "affected",
              "version": "58729c04cf1092b87aeef0bf0998c9e2e4771133",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "6.15"
            },
            {
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              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.1.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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            {
              "cpeMatch": [
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                },
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                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.15",
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                }
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              "operator": "OR"
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        }
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      "descriptions": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/huge_memory: initialise workingset state before folio split\n\nxas_try_split() adds __GFP_ACCOUNT for page-cache xa_nodes, but\n__folio_split() leaves the xa_state\u0027s xa_lru unset.  That lets a live,\nmemcg-charged xa_node exist without being linked into the mapping\u0027s\nshadow_nodes list_lru; when reclaim later walks the list_lru it trips\nVM_WARN_ON(!css_is_dying()).\n\nUse mapping_set_update() to install both the workingset update callback\nand the shadow_nodes list_lru on the xa_state."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-03T08:21:47.722Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/aca1f2d5de17e138bc6c4859126b77e516b82541"
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80729",
    "datePublished": "2026-09-03T08:21:47.722Z",
    "dateReserved": "2026-08-26T14:34:25.789Z",
    "dateUpdated": "2026-09-03T08:21:47.722Z",
    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

GHSA-P2P8-6FMX-RFJ9

CVE-2026-80729 (GCVE-0-2026-80729)

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Sightings

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