FKIE_CVE-2026-68477

Vulnerability from fkie_nvd - Published: 2026-08-15 06:20 - Updated: 2026-08-17 06:17
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ipvs: fix more places with wrong ipv6 transport offsets Sashiko reports for more incorrect IPv6 transport offsets. The app code for TCP was assuming IPv4 network header even after the ipvsh argument was provided. This can cause problems with apps over IPv6. As for the only official app in the kernel tree (FTP) this problem is harmless because we use Netfilter to mangle the FTP ports and we do not adjust the TCP seq numbers. Also, provide correct offset of the ICMPV6 header in ip_vs_out_icmp_v6() for correct checksum checks when the IPv6 packet has extension headers.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3a9dc9b55b53d94613a587604b77d3b20024090c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/613ce63711b8d431bba90781f133c39a21684f87
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7350eb7ead172ae8024897d4b0f2e15c5318279c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/905d7a363ade96a19f214815361e11981142c547
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/95d4511d81b2b37e5d2bdde5d912e48243eae517
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a3f0d5b605cd5da5c95279969fb8cea4e55cee5b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b3fe4cbd583895987935a9bdad01c8f9d3a02310
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d4ec18f48ce78a3bf7c999ac908691007375fe99
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/ipvs/ip_vs_app.c",
            "net/netfilter/ipvs/ip_vs_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "613ce63711b8d431bba90781f133c39a21684f87",
              "status": "affected",
              "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
              "versionType": "git"
            },
            {
              "lessThan": "95d4511d81b2b37e5d2bdde5d912e48243eae517",
              "status": "affected",
              "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
              "versionType": "git"
            },
            {
              "lessThan": "3a9dc9b55b53d94613a587604b77d3b20024090c",
              "status": "affected",
              "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
              "versionType": "git"
            },
            {
              "lessThan": "a3f0d5b605cd5da5c95279969fb8cea4e55cee5b",
              "status": "affected",
              "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
              "versionType": "git"
            },
            {
              "lessThan": "7350eb7ead172ae8024897d4b0f2e15c5318279c",
              "status": "affected",
              "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
              "versionType": "git"
            },
            {
              "lessThan": "d4ec18f48ce78a3bf7c999ac908691007375fe99",
              "status": "affected",
              "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
              "versionType": "git"
            },
            {
              "lessThan": "905d7a363ade96a19f214815361e11981142c547",
              "status": "affected",
              "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
              "versionType": "git"
            },
            {
              "lessThan": "b3fe4cbd583895987935a9bdad01c8f9d3a02310",
              "status": "affected",
              "version": "2a3b791e6e1169f374224d164738e9f7be703d77",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/ipvs/ip_vs_app.c",
            "net/netfilter/ipvs/ip_vs_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.28"
            },
            {
              "lessThan": "2.6.28",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "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: fix more places with wrong ipv6 transport offsets\n\nSashiko reports for more incorrect IPv6 transport offsets.\n\nThe app code for TCP was assuming IPv4 network header\neven after the ipvsh argument was provided. This can\ncause problems with apps over IPv6. As for the only\nofficial app in the kernel tree (FTP) this problem is\nharmless because we use Netfilter to mangle the FTP\nports and we do not adjust the TCP seq numbers.\n\nAlso, provide correct offset of the ICMPV6 header in\nip_vs_out_icmp_v6() for correct checksum checks when\nthe IPv6 packet has extension headers."
    }
  ],
  "id": "CVE-2026-68477",
  "lastModified": "2026-08-17T06:17:57.187",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-08-15T06:20:47.440",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3a9dc9b55b53d94613a587604b77d3b20024090c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/613ce63711b8d431bba90781f133c39a21684f87"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7350eb7ead172ae8024897d4b0f2e15c5318279c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/905d7a363ade96a19f214815361e11981142c547"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/95d4511d81b2b37e5d2bdde5d912e48243eae517"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a3f0d5b605cd5da5c95279969fb8cea4e55cee5b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b3fe4cbd583895987935a9bdad01c8f9d3a02310"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d4ec18f48ce78a3bf7c999ac908691007375fe99"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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