CVE-2026-97954 (GCVE-0-2026-97954)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:23 – Updated: 2026-09-25 10:23
VLAI
Title
net/rds: fix tcp stream corruption with large pages
Summary
In the Linux kernel, the following vulnerability has been resolved: net/rds: fix tcp stream corruption with large pages rds_message_map_pages() assigns PAGE_SIZE bytes to every scatterlist entry, even when total_len ends in a partial page. The RDS congestion map is defined as 8192 bytes, so on systems with PAGE_SIZE greater than 8192 the scatterlist maps bytes beyond the end of the congestion map. RDS-TCP transmits the SG contents according to those lengths, so the extra bytes become part of the TCP RDS stream and are interpreted as subsequent RDS message headers, corrupting the stream. Limit the final scatterlist mapping to the number of bytes remaining. This has no effect on systems with a 4K page size and allows RDS-TCP to be used on systems with 16K and larger page sizes. The RDS selftest, which previously hung on 16K pages, now passes.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7875e18e09961d29f30424c5e2e48e704dc3789b , < ef3565a418b8309589fe9b5df098a892c9146b06 (git)
Affected: 7875e18e09961d29f30424c5e2e48e704dc3789b , < 8cbfeb54bf781d9693778aaba133bb58c0285332 (git)
Affected: 7875e18e09961d29f30424c5e2e48e704dc3789b , < f4649a716be20ef9272f97a166dea1825ba5b554 (git)
Affected: 7875e18e09961d29f30424c5e2e48e704dc3789b , < 2ac09b5353fe6858411fdc8c6efa60d832e20f13 (git)
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Linux Linux Affected: 2.6.30
Unaffected: 0 , < 2.6.30 (semver)
Unaffected: 6.12.111 , ≤ 6.12.* (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2.7 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc3 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/rds/message.c"
          ],
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: fix tcp stream corruption with large pages\n\nrds_message_map_pages() assigns PAGE_SIZE bytes to every\nscatterlist entry, even when total_len ends in a partial page. The RDS\ncongestion map is defined as 8192 bytes, so on systems with PAGE_SIZE\ngreater than 8192 the scatterlist maps bytes beyond the end of the\ncongestion map.  RDS-TCP transmits the SG contents according to those\nlengths, so the extra bytes become part of the TCP RDS stream and are\ninterpreted as subsequent RDS message headers, corrupting the stream.\n\nLimit the final scatterlist mapping to the number of bytes remaining.\nThis has no effect on systems with a 4K page size and allows RDS-TCP to\nbe used on systems with 16K and larger page sizes.\n\nThe RDS selftest, which previously hung on 16K pages, now passes."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T10:23:01.364Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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      "title": "net/rds: fix tcp stream corruption with large pages",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97954",
    "datePublished": "2026-09-25T10:23:01.364Z",
    "dateReserved": "2026-09-25T10:18:58.205Z",
    "dateUpdated": "2026-09-25T10:23:01.364Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-97954",
      "date": "2026-09-27",
      "epss": "0.00168",
      "percentile": "0.05407"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-27T23:30:08.000Z",
      "cve": "CVE-2026-97954",
      "id": "msrc_CVE-2026-97954",
      "initial_release_date": "2026-09-27T23:30:08.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "net/rds: fix tcp stream corruption with large pages",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-97954.json",
      "version": "1"
    },
    "nvd": {
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        "cveTags": [],
        "descriptions": [
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            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: fix tcp stream corruption with large pages\n\nrds_message_map_pages() assigns PAGE_SIZE bytes to every\nscatterlist entry, even when total_len ends in a partial page. The RDS\ncongestion map is defined as 8192 bytes, so on systems with PAGE_SIZE\ngreater than 8192 the scatterlist maps bytes beyond the end of the\ncongestion map.  RDS-TCP transmits the SG contents according to those\nlengths, so the extra bytes become part of the TCP RDS stream and are\ninterpreted as subsequent RDS message headers, corrupting the stream.\n\nLimit the final scatterlist mapping to the number of bytes remaining.\nThis has no effect on systems with a 4K page size and allows RDS-TCP to\nbe used on systems with 16K and larger page sizes.\n\nThe RDS selftest, which previously hung on 16K pages, now passes."
          }
        ],
        "id": "CVE-2026-97954",
        "lastModified": "2026-09-25T11:17:23.040",
        "metrics": {},
        "published": "2026-09-25T11:17:23.040",
        "references": [
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}



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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

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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.



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.