CVE-2023-53711 (GCVE-0-2023-53711)
Vulnerability from cvelistv5 – Published: 2025-10-22 13:23 – Updated: 2026-08-05 09:15
VLAI
EPSS
VEX
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)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
ed5d588fe47feef290f271022820e255d8371561 , < 4185605cd0f72ec8bf8b423aacd94cd5ee13bbcf
(git)
Affected: ed5d588fe47feef290f271022820e255d8371561 , < da302f1d476a44245823a74546debb5d160bf5bd (git) Affected: ed5d588fe47feef290f271022820e255d8371561 , < dac14a1dbe20e003215dacb8a3a1a7e4ca4e0ad0 (git) Affected: ed5d588fe47feef290f271022820e255d8371561 , < 0ec26716e45d615edfff46012e7dedcc0ac5f7ab (git) Affected: ed5d588fe47feef290f271022820e255d8371561 , < 88975a55969e11f26fe3846bf4fbf8e7dc8cbbd4 (git) |
guessed | |
| 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) |
guessed |
{
"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",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"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": "2026-09-20",
"epss": "0.00361",
"percentile": "0.29922"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"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"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"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."
}
],
"id": "CVE-2023-53711",
"lastModified": "2026-08-04T10:19:18.777",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 4.2,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2025-10-22T14:15:45.713",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"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"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Deferred"
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-08-21T02:37:17+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"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
Loading…
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
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.
Loading…