FKIE_CVE-2026-98028

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: eth: nfp: drop the replaced rule from the list when reprogramming fails nfp_net_fs_add() replaces an existing rule by deleting it from the hardware, decrementing nn->fs.count and programming the new one. If nfp_net_fs_add_hw() fails the old entry stays on nn->fs.list - only the success path reaches list_replace() - so the list is one longer than nn->fs.count, and it advertises a rule whose hardware entry has already been torn down. nn->fs.count is what ETHTOOL_GRXCLSRLCNT reports, so userspace then sizes its buffer one entry short of what the GRXCLSRLALL walk wants to write. That used to overwrite one u32 past the allocation; since the walk is bounded it is a permanent -EMSGSIZE instead, as nothing ever resyncs the counter.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/108bb2142e3a12c9ad625ad662973127a113ddc6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/552e528a7d85cbe088b2ae4f78194713975b46cf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/603b70093f729f52a37544b48679903cad834856
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/edaec279f59f801a05b751df475ed71a0a68c88a
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "603b70093f729f52a37544b48679903cad834856",
              "status": "affected",
              "version": "9eb03bb1c035ff6e2c3a34046419446588253dda",
              "versionType": "git"
            },
            {
              "lessThan": "edaec279f59f801a05b751df475ed71a0a68c88a",
              "status": "affected",
              "version": "9eb03bb1c035ff6e2c3a34046419446588253dda",
              "versionType": "git"
            },
            {
              "lessThan": "552e528a7d85cbe088b2ae4f78194713975b46cf",
              "status": "affected",
              "version": "9eb03bb1c035ff6e2c3a34046419446588253dda",
              "versionType": "git"
            },
            {
              "lessThan": "108bb2142e3a12c9ad625ad662973127a113ddc6",
              "status": "affected",
              "version": "9eb03bb1c035ff6e2c3a34046419446588253dda",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "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\neth: nfp: drop the replaced rule from the list when reprogramming fails\n\nnfp_net_fs_add() replaces an existing rule by deleting it from the\nhardware, decrementing nn-\u003efs.count and programming the new one.  If\nnfp_net_fs_add_hw() fails the old entry stays on nn-\u003efs.list - only the\nsuccess path reaches list_replace() - so the list is one longer than\nnn-\u003efs.count, and it advertises a rule whose hardware entry has already\nbeen torn down.\n\nnn-\u003efs.count is what ETHTOOL_GRXCLSRLCNT reports, so userspace then sizes\nits buffer one entry short of what the GRXCLSRLALL walk wants to write.\nThat used to overwrite one u32 past the allocation; since the walk is\nbounded it is a permanent -EMSGSIZE instead, as nothing ever resyncs the\ncounter."
    }
  ],
  "id": "CVE-2026-98028",
  "lastModified": "2026-09-25T11:17:31.447",
  "metrics": {},
  "published": "2026-09-25T11:17:31.447",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/108bb2142e3a12c9ad625ad662973127a113ddc6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/552e528a7d85cbe088b2ae4f78194713975b46cf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/603b70093f729f52a37544b48679903cad834856"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/edaec279f59f801a05b751df475ed71a0a68c88a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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