FKIE_CVE-2026-97596

Vulnerability from fkie_nvd - Published: 2026-09-25 11:17 - Updated: 2026-09-25 11:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: ipvs: reject invalid states in connection template sync records IPVS sync receivers validate protocol states before creating or updating a connection. For connection templates, however, they only log states outside the template state range and still store the value in the connection. A template can be returned by ordinary connection lookup. TCP and SCTP then use the invalid state as an index into their transition tables. Reject invalid template states in both sync protocol versions before looking up or modifying a connection. The version 1 path handles both IPv4 and IPv6 records.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c61f7d8e18a978aec2a16d9acd5f682f1c72476
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/50c3f06222eafe9cca7ca51a0ef83311d7cab353
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74cb39735b6cd0aff4b5584158f09376fd97aadf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc10dc4511e6e2e2b4098ee115c8e5639471f23d
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/ipvs/ip_vs_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fc10dc4511e6e2e2b4098ee115c8e5639471f23d",
              "status": "affected",
              "version": "275411430f892407b885be1de2548b2e632892c3",
              "versionType": "git"
            },
            {
              "lessThan": "50c3f06222eafe9cca7ca51a0ef83311d7cab353",
              "status": "affected",
              "version": "275411430f892407b885be1de2548b2e632892c3",
              "versionType": "git"
            },
            {
              "lessThan": "0c61f7d8e18a978aec2a16d9acd5f682f1c72476",
              "status": "affected",
              "version": "275411430f892407b885be1de2548b2e632892c3",
              "versionType": "git"
            },
            {
              "lessThan": "74cb39735b6cd0aff4b5584158f09376fd97aadf",
              "status": "affected",
              "version": "275411430f892407b885be1de2548b2e632892c3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/ipvs/ip_vs_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.19"
            },
            {
              "lessThan": "4.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc3",
              "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\nipvs: reject invalid states in connection template sync records\n\nIPVS sync receivers validate protocol states before creating or updating a\nconnection. For connection templates, however, they only log states outside\nthe template state range and still store the value in the connection.\n\nA template can be returned by ordinary connection lookup. TCP and SCTP then\nuse the invalid state as an index into their transition tables.\n\nReject invalid template states in both sync protocol versions before\nlooking up or modifying a connection. The version 1 path handles both\nIPv4 and IPv6 records."
    }
  ],
  "id": "CVE-2026-97596",
  "lastModified": "2026-09-25T11:17:10.907",
  "metrics": {},
  "published": "2026-09-25T11:17:10.907",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0c61f7d8e18a978aec2a16d9acd5f682f1c72476"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/50c3f06222eafe9cca7ca51a0ef83311d7cab353"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/74cb39735b6cd0aff4b5584158f09376fd97aadf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fc10dc4511e6e2e2b4098ee115c8e5639471f23d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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