FKIE_CVE-2026-98105

Vulnerability from fkie_nvd - Published: 2026-09-25 11:17 - Updated: 2026-10-19 10:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: oa_tc6: Improve the error recovery When oversubscribed traffic causes lot of buffer overflow errors, probably due to loss of data chunks, driver fails to find a data chunk with end_valid bit set, before it runs out of sk buffer space. As a result, assert is seen during skb_put. Now, check is made if skb buffer has enough tailroom for the incoming data before accepting. If there is no room, current frame is abandoned and it will start looking for a data chunk with start_valid bit, that is a new frame. SK buffer allocation error is considered as recoverable error. rx_buf_overflow flag is too specific and no longer the only condition this flag is used for. Therefore it is renamed as wait_until_start_valid. This is more appropriate as this flag is used to look for the next data chunk with SV bit set, after failures like buffer overflow, buffer allocation failure, skb pointer validity besides buffer overflow error. Not writing to status0 if it reads 0.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/172c974113bffe5723b80b1acac17593bb50513c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9d3f6e714d5f8b728837f31bbe865b64cfd3216a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b89770d493749d7c3b8649996e1089719b4eff8d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d33003e752f25c385f2cf21964123582a44f6818
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/oa_tc6.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d33003e752f25c385f2cf21964123582a44f6818",
              "status": "affected",
              "version": "d70a0d8f2f2d1b9bb6e3e9dfed25ae3ca3303770",
              "versionType": "git"
            },
            {
              "lessThan": "9d3f6e714d5f8b728837f31bbe865b64cfd3216a",
              "status": "affected",
              "version": "d70a0d8f2f2d1b9bb6e3e9dfed25ae3ca3303770",
              "versionType": "git"
            },
            {
              "lessThan": "b89770d493749d7c3b8649996e1089719b4eff8d",
              "status": "affected",
              "version": "d70a0d8f2f2d1b9bb6e3e9dfed25ae3ca3303770",
              "versionType": "git"
            },
            {
              "lessThan": "172c974113bffe5723b80b1acac17593bb50513c",
              "status": "affected",
              "version": "d70a0d8f2f2d1b9bb6e3e9dfed25ae3ca3303770",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/oa_tc6.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "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",
              "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\nnet: ethernet: oa_tc6: Improve the error recovery\n\nWhen oversubscribed traffic causes lot of buffer overflow errors,\nprobably due to loss of data chunks, driver fails to find a\ndata chunk with end_valid bit set, before it runs out of sk buffer\nspace. As a result, assert is seen during skb_put.\n\nNow, check is made if skb buffer has enough tailroom for the\nincoming data before accepting. If there is no room, current\nframe is abandoned and it will start looking for a data chunk\nwith start_valid bit, that is a new frame.\n\nSK buffer allocation error is considered as recoverable error.\n\nrx_buf_overflow flag is too specific and no longer the only\ncondition this flag is used for. Therefore it is renamed as\nwait_until_start_valid. This is more appropriate as this flag\nis used to look for the next data chunk with SV bit set, after\nfailures like buffer overflow, buffer allocation failure, skb pointer\nvalidity besides buffer overflow error.\n\nNot writing to status0 if it reads 0."
    }
  ],
  "id": "CVE-2026-98105",
  "lastModified": "2026-10-19T10:18:07.947",
  "metrics": {},
  "published": "2026-09-25T11:17:40.987",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/172c974113bffe5723b80b1acac17593bb50513c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9d3f6e714d5f8b728837f31bbe865b64cfd3216a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b89770d493749d7c3b8649996e1089719b4eff8d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d33003e752f25c385f2cf21964123582a44f6818"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}



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