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MediumFix available

tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor.

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor. While reading sysctl_tcp_mtu_probe_floor, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader.

Products
Kernel
Affected versions
Not specified
Fixed versions
5.10.134, 5.15.58, 5.18.15, 5.4.208
CVEs
CVE-2022-49594
Confirmed fixed CVEs
Not specified
Updated in this feed
7 Nov 2026, 18:52 UTC · Revision 1

Source evidence

tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor.

core-osv · Original source

Published 26 Feb 2025, 02:23 UTC

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor. While reading sysctl_tcp_mtu_probe_floor, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader.

osv:CVE-2022-49594

Kernel

Fixed versions: 5.4.208, 5.10.134, 5.15.58, 5.18.15

Complete source record
{
  "id": "f8070e1b3f7a4d2340c45f7192abd7a6bae5225b3bcd5e2c2606b7f91f90f3d4",
  "url": "https://osv.dev/vulnerability/CVE-2022-49594",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor.",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor. While reading sysctl_tcp_mtu_probe_floor, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader.",
    "evidence": "osv:CVE-2022-49594",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.208",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.134",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.58",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.18.15",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2022-49594",
      "aliases": [
        "CVE-2022-49594"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c04b79b6cfd714144f6a2cf359603d82ee631e62"
                },
                {
                  "fixed": "033963b220633ed1602d458e7e4ac06afa9fefb2"
                },
                {
                  "fixed": "d5bece4df6090395f891110ef52a6f82d16685db"
                },
                {
                  "fixed": "cc36c37f5fe066c4708e623ead96dc8f57224bf5"
                },
                {
                  "fixed": "e2ecbf3f0aa88277d43908c53b99399d55729ff9"
                },
                {
                  "fixed": "8e92d4423615a5257d0d871fc067aa561f597deb"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49594.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.4.0"
                },
                {
                  "fixed": "5.4.208"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.5.0"
                },
                {
                  "fixed": "5.10.134"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.58"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "5.18.15"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49594.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.597199809Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/033963b220633ed1602d458e7e4ac06afa9fefb2",
        "https://git.kernel.org/stable/c/8e92d4423615a5257d0d871fc067aa561f597deb",
        "https://git.kernel.org/stable/c/cc36c37f5fe066c4708e623ead96dc8f57224bf5",
        "https://git.kernel.org/stable/c/d5bece4df6090395f891110ef52a6f82d16685db",
        "https://git.kernel.org/stable/c/e2ecbf3f0aa88277d43908c53b99399d55729ff9",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49594.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49594",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49594.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49594",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 520144,
  "published_at": "2025-02-26T02:23:25.531+00:00"
}