CVE-2026-68351 (GCVE-0-2026-68351)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:03 – Updated: 2026-08-19 16:33
VLAI
Title
wifi: carl9170: bound memcpy length in cmd callback to prevent OOB read
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a84fab3cbfdc427e7d366f1cc844f27b2084c26c , < 38e240996a6a78c94ab07d461fd66e361d55c3c4 (git)
Affected: a84fab3cbfdc427e7d366f1cc844f27b2084c26c , < 2d05c321d27624c413c950278d2dc8e0f44a8950 (git)
Affected: a84fab3cbfdc427e7d366f1cc844f27b2084c26c , < 525036b20ef01d814a7fcd0567d123992e4479fa (git)
Affected: a84fab3cbfdc427e7d366f1cc844f27b2084c26c , < f74e34e66379e487a09009a4f2d42470051672bd (git)
Affected: a84fab3cbfdc427e7d366f1cc844f27b2084c26c , < 500c36649f270de05a56591fcc1aaaa36687958e (git)
Affected: a84fab3cbfdc427e7d366f1cc844f27b2084c26c , < 9aee949c68dc6dccbc54333537b109c53fe2079f (git)
Affected: a84fab3cbfdc427e7d366f1cc844f27b2084c26c , < cb7a38810cf25738176dac32dec7a146b3f959cf (git)
Affected: a84fab3cbfdc427e7d366f1cc844f27b2084c26c , < 4cde55b2feff9504d1f993ab80e84e7ccb62791c (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.37
Unaffected: 0 , < 2.6.37 (semver)
Unaffected: 5.10.265 , ≤ 5.10.* (semver)
Unaffected: 5.15.216 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "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."
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    "dateReserved": "2026-07-30T09:28:09.384Z",
    "dateUpdated": "2026-08-19T16:33:53.098Z",
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            "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."
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      "current_release_date": "2026-09-01T15:34:06+00:00",
      "cve": "CVE-2026-68351",
      "id": "CVE-2026-68351",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_affected": "166",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: carl9170: bound memcpy length in cmd callback to prevent OOB read",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68351.json",
      "version": "3"
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      "current_release_date": "2026-09-18T00:31:36Z",
      "cve": "CVE-2026-68351",
      "id": "CVE-2026-68351",
      "initial_release_date": "2026-08-11T23:46:46Z",
      "product_status:first_fixed": "23",
      "product_status:known_affected": "675",
      "product_status:known_not_affected": "56",
      "product_status:recommended": "107",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68351",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68351.json",
      "version": "9"
    }
  }
}



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