FKIE_CVE-2026-68351

Vulnerability from fkie_nvd - Published: 2026-08-10 13:20 - Updated: 2026-08-19 17:20
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: carl9170: bound memcpy length in cmd callback to prevent OOB read When the firmware sends a command response with a length mismatch, carl9170_cmd_callback() logs the mismatch and calls carl9170_restart() but then falls through to memcpy(ar->readbuf, buffer + 4, len - 4). Since len comes from the firmware and can exceed ar->readlen, this copies more data than the readbuf was allocated for. Bound the memcpy to min(len - 4, ar->readlen) so that the response is still completed -- avoiding repeated restarts from queued garbage -- while preventing an overread past the response buffer.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2d05c321d27624c413c950278d2dc8e0f44a8950
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/38e240996a6a78c94ab07d461fd66e361d55c3c4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4cde55b2feff9504d1f993ab80e84e7ccb62791c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/500c36649f270de05a56591fcc1aaaa36687958e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/525036b20ef01d814a7fcd0567d123992e4479fa
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9aee949c68dc6dccbc54333537b109c53fe2079f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cb7a38810cf25738176dac32dec7a146b3f959cf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f74e34e66379e487a09009a4f2d42470051672bd
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/carl9170/rx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "38e240996a6a78c94ab07d461fd66e361d55c3c4",
              "status": "affected",
              "version": "a84fab3cbfdc427e7d366f1cc844f27b2084c26c",
              "versionType": "git"
            },
            {
              "lessThan": "2d05c321d27624c413c950278d2dc8e0f44a8950",
              "status": "affected",
              "version": "a84fab3cbfdc427e7d366f1cc844f27b2084c26c",
              "versionType": "git"
            },
            {
              "lessThan": "525036b20ef01d814a7fcd0567d123992e4479fa",
              "status": "affected",
              "version": "a84fab3cbfdc427e7d366f1cc844f27b2084c26c",
              "versionType": "git"
            },
            {
              "lessThan": "f74e34e66379e487a09009a4f2d42470051672bd",
              "status": "affected",
              "version": "a84fab3cbfdc427e7d366f1cc844f27b2084c26c",
              "versionType": "git"
            },
            {
              "lessThan": "500c36649f270de05a56591fcc1aaaa36687958e",
              "status": "affected",
              "version": "a84fab3cbfdc427e7d366f1cc844f27b2084c26c",
              "versionType": "git"
            },
            {
              "lessThan": "9aee949c68dc6dccbc54333537b109c53fe2079f",
              "status": "affected",
              "version": "a84fab3cbfdc427e7d366f1cc844f27b2084c26c",
              "versionType": "git"
            },
            {
              "lessThan": "cb7a38810cf25738176dac32dec7a146b3f959cf",
              "status": "affected",
              "version": "a84fab3cbfdc427e7d366f1cc844f27b2084c26c",
              "versionType": "git"
            },
            {
              "lessThan": "4cde55b2feff9504d1f993ab80e84e7ccb62791c",
              "status": "affected",
              "version": "a84fab3cbfdc427e7d366f1cc844f27b2084c26c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/carl9170/rx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.37"
            },
            {
              "lessThan": "2.6.37",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "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\nwifi: carl9170: bound memcpy length in cmd callback to prevent OOB read\n\nWhen the firmware sends a command response with a length mismatch,\ncarl9170_cmd_callback() logs the mismatch and calls carl9170_restart()\nbut then falls through to memcpy(ar-\u003ereadbuf, buffer + 4, len - 4).\nSince len comes from the firmware and can exceed ar-\u003ereadlen, this\ncopies more data than the readbuf was allocated for.\n\nBound the memcpy to min(len - 4, ar-\u003ereadlen) so that the response\nis still completed -- avoiding repeated restarts from queued garbage --\nwhile preventing an overread past the response buffer."
    }
  ],
  "id": "CVE-2026-68351",
  "lastModified": "2026-08-19T17:20:44.597",
  "metrics": {},
  "published": "2026-08-10T13:20:27.153",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2d05c321d27624c413c950278d2dc8e0f44a8950"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/38e240996a6a78c94ab07d461fd66e361d55c3c4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4cde55b2feff9504d1f993ab80e84e7ccb62791c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/500c36649f270de05a56591fcc1aaaa36687958e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/525036b20ef01d814a7fcd0567d123992e4479fa"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9aee949c68dc6dccbc54333537b109c53fe2079f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cb7a38810cf25738176dac32dec7a146b3f959cf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f74e34e66379e487a09009a4f2d42470051672bd"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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