CVE-2023-53711 (GCVE-0-2023-53711)

Vulnerability from cvelistv5 – Published: 2025-10-22 13:23 – Updated: 2026-08-05 09:15
VLAI
Title
NFS: Fix a potential data corruption
Summary
In the Linux kernel, the following vulnerability has been resolved: NFS: Fix a potential data corruption We must ensure that the subrequests are joined back into the head before we can retransmit a request. If the head was not on the commit lists, because the server wrote it synchronously, we still need to add it back to the retransmission list. Add a call that mirrors the effect of nfs_cancel_remove_inode() for O_DIRECT.
Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ed5d588fe47feef290f271022820e255d8371561 , < 4185605cd0f72ec8bf8b423aacd94cd5ee13bbcf (git)
Affected: ed5d588fe47feef290f271022820e255d8371561 , < da302f1d476a44245823a74546debb5d160bf5bd (git)
Affected: ed5d588fe47feef290f271022820e255d8371561 , < dac14a1dbe20e003215dacb8a3a1a7e4ca4e0ad0 (git)
Affected: ed5d588fe47feef290f271022820e255d8371561 , < 0ec26716e45d615edfff46012e7dedcc0ac5f7ab (git)
Affected: ed5d588fe47feef290f271022820e255d8371561 , < 88975a55969e11f26fe3846bf4fbf8e7dc8cbbd4 (git)
Create a notification for this product.
Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.195 , ≤ 5.10.* (semver)
Unaffected: 5.15.132 , ≤ 5.15.* (semver)
Unaffected: 6.1.54 , ≤ 6.1.* (semver)
Unaffected: 6.5.4 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/nfs/direct.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4185605cd0f72ec8bf8b423aacd94cd5ee13bbcf",
              "status": "affected",
              "version": "ed5d588fe47feef290f271022820e255d8371561",
              "versionType": "git"
            },
            {
              "lessThan": "da302f1d476a44245823a74546debb5d160bf5bd",
              "status": "affected",
              "version": "ed5d588fe47feef290f271022820e255d8371561",
              "versionType": "git"
            },
            {
              "lessThan": "dac14a1dbe20e003215dacb8a3a1a7e4ca4e0ad0",
              "status": "affected",
              "version": "ed5d588fe47feef290f271022820e255d8371561",
              "versionType": "git"
            },
            {
              "lessThan": "0ec26716e45d615edfff46012e7dedcc0ac5f7ab",
              "status": "affected",
              "version": "ed5d588fe47feef290f271022820e255d8371561",
              "versionType": "git"
            },
            {
              "lessThan": "88975a55969e11f26fe3846bf4fbf8e7dc8cbbd4",
              "status": "affected",
              "version": "ed5d588fe47feef290f271022820e255d8371561",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/nfs/direct.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.195",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.132",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.195",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.132",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.54",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5.4",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFS: Fix a potential data corruption\n\nWe must ensure that the subrequests are joined back into the head before\nwe can retransmit a request. If the head was not on the commit lists,\nbecause the server wrote it synchronously, we still need to add it back\nto the retransmission list.\nAdd a call that mirrors the effect of nfs_cancel_remove_inode() for\nO_DIRECT."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The bug lives in the NFS client\u0027s O_DIRECT write path and is driven entirely by data from a remote peer \u2014 the server\u0027s per-WRITE `committed` level, the negotiated wsize that forces the page-group split, and the COMMIT write verifier that triggers `nfs_direct_write_reschedule()`. A malicious/compromised NFS server or an on-path attacker on unauthenticated AUTH_SYS NFS traffic reaches it over the network with no local access.\nAC:L - All three preconditions are server-controlled and can be produced deterministically and repeatedly: advertise a wsize that forces `__nfs_pageio_add_request()` to split a request into head+subrequest across two RPCs, answer one FILE_SYNC and the other UNSTABLE so only the subrequest lands on the commit list, then return a changed write verifier on COMMIT to force the reschedule.\nPR:N - The attacker is the remote NFS server (or an on-path attacker), which needs no credentials or privileges on the victim client; the vulnerable path runs in the client\u0027s normal write-completion/reschedule machinery.\nUI:N - No victim action is required beyond an already-mounted export carrying an ordinary O_DIRECT workload \u2014 the databases, VM images and backup jobs NFS O_DIRECT exists for. The reschedule runs asynchronously from `nfsiod` with no user involvement.\nS:U - The defect and its consequences are confined to the NFS client within the same kernel security authority; no VM, sandbox, or IOMMU boundary is crossed.\nC:N - Tracing the path shows no out-of-bounds read, no kernel-memory disclosure and no read primitive \u2014 subrequests hold krefs on the head and `nfs_page_group_destroy()`\u0027s deferred teardown prevents any use-after-free. The impact is confined to what gets written back.\nI:H - Retransmitting subrequests without rejoining them to the head means an O_DIRECT write is not faithfully re-driven to stable storage after the server discards its unstable cache, so file contents silently diverge from what the application wrote while `write()` still reports success \u2014 unbounded, undetected corruption of stored data on a shared network filesystem.\nA:L - The un-joined group never collapses, so each attacker-forced reschedule round re-splits requests and grafts more members onto a page-group ring that cannot be reclaimed until the whole dreq dies, degrading memory and lengthening the O(N) ring walks while the write fails to converge. I found no reachable panic, BUG_ON, or hang, so this is degradation rather than a full availability loss."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T09:15:39.362Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4185605cd0f72ec8bf8b423aacd94cd5ee13bbcf"
        },
        {
          "url": "https://git.kernel.org/stable/c/da302f1d476a44245823a74546debb5d160bf5bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/dac14a1dbe20e003215dacb8a3a1a7e4ca4e0ad0"
        },
        {
          "url": "https://git.kernel.org/stable/c/0ec26716e45d615edfff46012e7dedcc0ac5f7ab"
        },
        {
          "url": "https://git.kernel.org/stable/c/88975a55969e11f26fe3846bf4fbf8e7dc8cbbd4"
        }
      ],
      "title": "NFS: Fix a potential data corruption",
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53711",
    "datePublished": "2025-10-22T13:23:46.458Z",
    "dateReserved": "2025-10-22T13:21:37.346Z",
    "dateUpdated": "2026-08-05T09:15:39.362Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-53711",
      "date": "2026-08-09",
      "epss": "0.00361",
      "percentile": "0.28852"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53711\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-22T14:15:45.713\",\"lastModified\":\"2026-08-04T10:19:18.777\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nNFS: Fix a potential data corruption\\n\\nWe must ensure that the subrequests are joined back into the head before\\nwe can retransmit a request. If the head was not on the commit lists,\\nbecause the server wrote it synchronously, we still need to add it back\\nto the retransmission list.\\nAdd a call that mirrors the effect of nfs_cancel_remove_inode() for\\nO_DIRECT.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/nfs/direct.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"ed5d588fe47feef290f271022820e255d8371561\",\"lessThan\":\"4185605cd0f72ec8bf8b423aacd94cd5ee13bbcf\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ed5d588fe47feef290f271022820e255d8371561\",\"lessThan\":\"da302f1d476a44245823a74546debb5d160bf5bd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ed5d588fe47feef290f271022820e255d8371561\",\"lessThan\":\"dac14a1dbe20e003215dacb8a3a1a7e4ca4e0ad0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ed5d588fe47feef290f271022820e255d8371561\",\"lessThan\":\"0ec26716e45d615edfff46012e7dedcc0ac5f7ab\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ed5d588fe47feef290f271022820e255d8371561\",\"lessThan\":\"88975a55969e11f26fe3846bf4fbf8e7dc8cbbd4\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/nfs/direct.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.195\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.132\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.54\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.5.4\",\"lessThanOrEqual\":\"6.5.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L\",\"baseScore\":8.2,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":4.2}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0ec26716e45d615edfff46012e7dedcc0ac5f7ab\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4185605cd0f72ec8bf8b423aacd94cd5ee13bbcf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/88975a55969e11f26fe3846bf4fbf8e7dc8cbbd4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/da302f1d476a44245823a74546debb5d160bf5bd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dac14a1dbe20e003215dacb8a3a1a7e4ca4e0ad0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-04T22:55:02+00:00",
      "cve": "CVE-2023-53711",
      "id": "CVE-2023-53711",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "279",
      "product_status:known_affected": "112",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: NFS: Fix a potential data corruption",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53711.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-25T02:13:12Z",
      "cve": "CVE-2023-53711",
      "id": "CVE-2023-53711",
      "initial_release_date": "2025-10-28T00:48:17Z",
      "product_status:known_affected": "354",
      "product_status:known_not_affected": "150",
      "product_status:recommended": "571",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-53711",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53711.json",
      "version": "43"
    }
  }
}



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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.