CVE-2026-53153 (GCVE-0-2026-53153)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-09-02 12:04
VLAI
Title
mm/list_lru: drain before clearing xarray entry on reparent
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/list_lru: drain before clearing xarray entry on reparent memcg_reparent_list_lrus() clears the dying memcg's xarray entry with xas_store(&xas, NULL) before reparenting its per-node lists into the parent. This opens a window where a concurrent list_lru_del() arriving for the dying memcg sees xa_load() == NULL, walks to the parent in lock_list_lru_of_memcg(), takes the parent's per-node lock, and calls list_del_init() on an item still physically linked on the dying memcg's list. If another in-flight thread holds the dying memcg's per-node lock at the same moment (another list_lru_del, or a list_lru_walk_one running an isolate callback), both threads modify ->next/->prev pointers on the same physical list under different locks. Adjacent items can corrupt each other's links. Fix it by reversing the order: reparent each per-node list and mark the child's list lru dead and then clear the xarray entry. Any concurrent list_lru op that finds the still-set xarray entry either takes the dying memcg's per-node lock (synchronizing with the drain) or sees LONG_MIN and walks to the parent, where the items now live.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-820 - Missing Synchronization
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fb56fdf8b9a2f7397f8a83dce50189f3f0cf71af , < c19ff4351214f059349788e13e70e74325831ff6 (git)
Affected: fb56fdf8b9a2f7397f8a83dce50189f3f0cf71af , < 2b66496d794e98f7aeec7688573051f22ec40bac (git)
Affected: fb56fdf8b9a2f7397f8a83dce50189f3f0cf71af , < 98733f3f0becb1ae0701d021c1748e974e5fa55c (git)
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Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:6.12.0-211.50.1.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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                    "vulnerable": true
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                    "vulnerable": true
                  },
                  {
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                    "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9",
                    "vulnerable": true
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                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*",
                    "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*",
                    "matchCriteriaId": "B0E8FC71-3952-444C-83E9-718DBBBEC615",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc7:*:*:*:*:*:*",
                    "matchCriteriaId": "1039E95A-8CC3-4C88-8FF9-5C08EEB861C9",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D65C2163-CFC2-4ABB-8F4E-CB09CEBD006C",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/list_lru: drain before clearing xarray entry on reparent\n\nmemcg_reparent_list_lrus() clears the dying memcg\u0027s xarray entry with\nxas_store(\u0026xas, NULL) before reparenting its per-node lists into the\nparent.  This opens a window where a concurrent list_lru_del() arriving\nfor the dying memcg sees xa_load() == NULL, walks to the parent in\nlock_list_lru_of_memcg(), takes the parent\u0027s per-node lock, and calls\nlist_del_init() on an item still physically linked on the dying memcg\u0027s\nlist.\n\nIf another in-flight thread holds the dying memcg\u0027s per-node lock at the\nsame moment (another list_lru_del, or a list_lru_walk_one running an\nisolate callback), both threads modify -\u003enext/-\u003eprev pointers on the same\nphysical list under different locks.  Adjacent items can corrupt each\nother\u0027s links.\n\nFix it by reversing the order: reparent each per-node list and mark the\nchild\u0027s list lru dead and then clear the xarray entry.  Any concurrent\nlist_lru op that finds the still-set xarray entry either takes the dying\nmemcg\u0027s per-node lock (synchronizing with the drain) or sees LONG_MIN and\nwalks to the parent, where the items now live."
          }
        ],
        "id": "CVE-2026-53153",
        "lastModified": "2026-09-02T13:18:00.830",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.0,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.0,
              "impactScore": 5.9,
              "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-06-25T09:16:32.680",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2b66496d794e98f7aeec7688573051f22ec40bac"
          },
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            "tags": [
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          },
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            "tags": [
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          },
          {
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            "url": "https://access.redhat.com/errata/RHSA-2026:61887"
          },
          {
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "tags": [
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          },
          {
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "tags": [
              "Third Party Advisory"
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            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492790"
          },
          {
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53153.json"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-820"
              }
            ],
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "type": "Secondary"
          }
        ]
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    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-09-01T13:58:28+00:00",
      "cve": "CVE-2026-53153",
      "id": "CVE-2026-53153",
      "initial_release_date": "2026-06-25T00:00:00+00:00",
      "product_status:fixed": "309",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mm/list_lru: drain before clearing xarray entry on reparent",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53153.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T00:08:27Z",
      "cve": "CVE-2026-53153",
      "id": "CVE-2026-53153",
      "initial_release_date": "2026-06-26T02:11:58Z",
      "product_status:known_not_affected": "385",
      "product_status:recommended": "42",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-53153",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53153.json",
      "version": "5"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.