github - ghsa-2qmc-x97c-8pmc

GHSA-2QMC-X97C-8PMC

Vulnerability from github – Published: 2025-12-30 15:30 – Updated: 2025-12-30 15:30

Details

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

tcp: fix a signed-integer-overflow bug in tcp_add_backlog()

The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and in tcp_add_backlog(), the variable limit is caculated by adding sk_rcvbuf, sk_sndbuf and 64 * 1024, it may exceed the max value of int and overflow. This patch reduces the limit budget by halving the sndbuf to solve this issue since ACK packets are much smaller than the payload.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50865"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:16:01Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: fix a signed-integer-overflow bug in tcp_add_backlog()\n\nThe type of sk_rcvbuf and sk_sndbuf in struct sock is int, and\nin tcp_add_backlog(), the variable limit is caculated by adding\nsk_rcvbuf, sk_sndbuf and 64 * 1024, it may exceed the max value\nof int and overflow. This patch reduces the limit budget by\nhalving the sndbuf to solve this issue since ACK packets are much\nsmaller than the payload.",
  "id": "GHSA-2qmc-x97c-8pmc",
  "modified": "2025-12-30T15:30:28Z",
  "published": "2025-12-30T15:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50865"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/28addf029417d53b1df062b4c87feb7bc033cb5f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f23cb2be530785db284a685d1b1c30224d8a538"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9d04b4d0feee12bce6bfe37f30d8e953d3c30368"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a85d39f14aa8a71e29cfb5eb5de02878a8779898"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec791d8149ff60c40ad2074af3b92a39c916a03f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2022-50865 (GCVE-0-2022-50865)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:15 – Updated: 2025-12-30 12:15

Title

tcp: fix a signed-integer-overflow bug in tcp_add_backlog()

Summary

In the Linux kernel, the following vulnerability has been resolved: tcp: fix a signed-integer-overflow bug in tcp_add_backlog() The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and in tcp_add_backlog(), the variable limit is caculated by adding sk_rcvbuf, sk_sndbuf and 64 * 1024, it may exceed the max value of int and overflow. This patch reduces the limit budget by halving the sndbuf to solve this issue since ACK packets are much smaller than the payload.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/9d04b4d0feee12bce…
	https://git.kernel.org/stable/c/4f23cb2be530785db…
	https://git.kernel.org/stable/c/a85d39f14aa8a71e2…
	https://git.kernel.org/stable/c/28addf029417d53b1…
	https://git.kernel.org/stable/c/ec791d8149ff60c40…

Impacted products

Vendor

Product

Version

Linux

Affected: c9c3321257e1b95be9b375f811fb250162af8d39 , < 9d04b4d0feee12bce6bfe37f30d8e953d3c30368 (git)
Affected: c9c3321257e1b95be9b375f811fb250162af8d39 , < 4f23cb2be530785db284a685d1b1c30224d8a538 (git)
Affected: c9c3321257e1b95be9b375f811fb250162af8d39 , < a85d39f14aa8a71e29cfb5eb5de02878a8779898 (git)
Affected: c9c3321257e1b95be9b375f811fb250162af8d39 , < 28addf029417d53b1df062b4c87feb7bc033cb5f (git)
Affected: c9c3321257e1b95be9b375f811fb250162af8d39 , < ec791d8149ff60c40ad2074af3b92a39c916a03f (git)

Linux

Affected: 4.9
Unaffected: 0 , < 4.9 (semver)
Unaffected: 5.4.278 , ≤ 5.4.* (semver)
Unaffected: 5.10.153 , ≤ 5.10.* (semver)
Unaffected: 5.15.77 , ≤ 5.15.* (semver)
Unaffected: 6.0.7 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/tcp_ipv4.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "c9c3321257e1b95be9b375f811fb250162af8d39",
              "versionType": "git"
            },
            {
              "lessThan": "4f23cb2be530785db284a685d1b1c30224d8a538",
              "status": "affected",
              "version": "c9c3321257e1b95be9b375f811fb250162af8d39",
              "versionType": "git"
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              "versionType": "git"
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              "versionType": "git"
            },
            {
              "lessThan": "ec791d8149ff60c40ad2074af3b92a39c916a03f",
              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/tcp_ipv4.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.9"
            },
            {
              "lessThan": "4.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.278",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.153",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.77",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.278",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
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                  "vulnerable": true
                },
                {
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                },
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                }
              ],
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: fix a signed-integer-overflow bug in tcp_add_backlog()\n\nThe type of sk_rcvbuf and sk_sndbuf in struct sock is int, and\nin tcp_add_backlog(), the variable limit is caculated by adding\nsk_rcvbuf, sk_sndbuf and 64 * 1024, it may exceed the max value\nof int and overflow. This patch reduces the limit budget by\nhalving the sndbuf to solve this issue since ACK packets are much\nsmaller than the payload."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:15:37.150Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/9d04b4d0feee12bce6bfe37f30d8e953d3c30368"
        },
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          "url": "https://git.kernel.org/stable/c/4f23cb2be530785db284a685d1b1c30224d8a538"
        },
        {
          "url": "https://git.kernel.org/stable/c/a85d39f14aa8a71e29cfb5eb5de02878a8779898"
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        {
          "url": "https://git.kernel.org/stable/c/28addf029417d53b1df062b4c87feb7bc033cb5f"
        },
        {
          "url": "https://git.kernel.org/stable/c/ec791d8149ff60c40ad2074af3b92a39c916a03f"
        }
      ],
      "title": "tcp: fix a signed-integer-overflow bug in tcp_add_backlog()",
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      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50865",
    "datePublished": "2025-12-30T12:15:37.150Z",
    "dateReserved": "2025-12-30T12:06:07.136Z",
    "dateUpdated": "2025-12-30T12:15:37.150Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-2QMC-X97C-8PMC

CVE-2022-50865 (GCVE-0-2022-50865)

Tags

Sightings

Nomenclature