FKIE_CVE-2026-64118

Vulnerability from fkie_nvd - Published: 2026-07-19 16:17 - Updated: 2026-07-20 15:17
Severity
8.4 (High) - CVSS:3.1/AV:L/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: qed: fix double free in qed_cxt_tables_alloc() If one of the later PF or VF CID bitmap allocations fails, qed_cid_map_alloc() jumps to cid_map_fail and frees the previously allocated CID bitmaps before returning an error. qed_cxt_tables_alloc() then calls qed_cxt_mngr_free(), which invokes qed_cid_map_free() again. Fix this by setting each CID bitmap pointer to NULL after bitmap_free() to avoid double free. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc3. Runtime reproduction was not attempted because exercising the failing allocation path requires device-specific setup.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0e47fc1c9181ae029e0e35a865cbf2adcbae626c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2bccfb8476ca5f3548afbd623dc7a6980d4e77de
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3904b993cc17ec5d7c5d3b57dbd0b775dafb9684
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9fe030719bd083b766602692ee96c8c985798e3c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a04c207f0801abdd23a169b5f902a9845059a65a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bdf678a273cadbccc347f331ae2e93ff4d14834c
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/qlogic/qed/qed_cxt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9fe030719bd083b766602692ee96c8c985798e3c",
              "status": "affected",
              "version": "fe56b9e6a8d957d6a20729d626027f800c17a2da",
              "versionType": "git"
            },
            {
              "lessThan": "06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227",
              "status": "affected",
              "version": "fe56b9e6a8d957d6a20729d626027f800c17a2da",
              "versionType": "git"
            },
            {
              "lessThan": "8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb",
              "status": "affected",
              "version": "fe56b9e6a8d957d6a20729d626027f800c17a2da",
              "versionType": "git"
            },
            {
              "lessThan": "3904b993cc17ec5d7c5d3b57dbd0b775dafb9684",
              "status": "affected",
              "version": "fe56b9e6a8d957d6a20729d626027f800c17a2da",
              "versionType": "git"
            },
            {
              "lessThan": "bdf678a273cadbccc347f331ae2e93ff4d14834c",
              "status": "affected",
              "version": "fe56b9e6a8d957d6a20729d626027f800c17a2da",
              "versionType": "git"
            },
            {
              "lessThan": "0e47fc1c9181ae029e0e35a865cbf2adcbae626c",
              "status": "affected",
              "version": "fe56b9e6a8d957d6a20729d626027f800c17a2da",
              "versionType": "git"
            },
            {
              "lessThan": "a04c207f0801abdd23a169b5f902a9845059a65a",
              "status": "affected",
              "version": "fe56b9e6a8d957d6a20729d626027f800c17a2da",
              "versionType": "git"
            },
            {
              "lessThan": "2bccfb8476ca5f3548afbd623dc7a6980d4e77de",
              "status": "affected",
              "version": "fe56b9e6a8d957d6a20729d626027f800c17a2da",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/qlogic/qed/qed_cxt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.4"
            },
            {
              "lessThan": "4.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.142",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.92",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "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\nqed: fix double free in qed_cxt_tables_alloc()\n\nIf one of the later PF or VF CID bitmap allocations fails,\nqed_cid_map_alloc() jumps to cid_map_fail and frees the previously\nallocated CID bitmaps before returning an error. qed_cxt_tables_alloc()\nthen calls qed_cxt_mngr_free(), which invokes qed_cid_map_free()\nagain.\n\nFix this by setting each CID bitmap pointer to NULL after bitmap_free()\nto avoid double free.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1-rc3.\n\nRuntime reproduction was not attempted because exercising the failing\nallocation path requires device-specific setup."
    }
  ],
  "id": "CVE-2026-64118",
  "lastModified": "2026-07-20T15:17:10.653",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-19T16:17:53.320",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0e47fc1c9181ae029e0e35a865cbf2adcbae626c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2bccfb8476ca5f3548afbd623dc7a6980d4e77de"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3904b993cc17ec5d7c5d3b57dbd0b775dafb9684"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9fe030719bd083b766602692ee96c8c985798e3c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a04c207f0801abdd23a169b5f902a9845059a65a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bdf678a273cadbccc347f331ae2e93ff4d14834c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.