CVE-2026-90417 (GCVE-0-2026-90417)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-10-21 12:51
VLAI
Title
RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry()
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry() When the device is in the fatal error state, write_tpt_entry() returns -EIO before handing the caller's preallocated skb to the transmit path; its allocation-failure returns do the same. c4iw_dereg_mr() ignores the error and frees mhp, leaking mhp->dereg_skb. c4iw_get_dma_mr() instead frees the skb a second time after dereg_mem() already consumed it, a double free. Make write_tpt_entry() the sole owner of a non-NULL skb, freeing it on every return preceding handoff to c4iw_ofld_send(): fatal error, tpt and stag allocation failure. c4iw_ofld_send() consumes the skb on success and error alike, so drop the redundant kfree_skb() in c4iw_get_dma_mr() after dereg_mem().
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7056 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 , < 68c1d2c085f205e8a5338bc3d3304f897deca4d9 (git)
Affected: 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 , < 379cf06e6fe34af980064c6ccaf15d8e26ec4a42 (git)
Affected: 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 , < 2fcd26f4680143e9ec477069530548dbe20fce6f (git)
Affected: 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 , < 6b15fc9bc117fb6597fa1c2cc30284aafe71101c (git)
Affected: 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 , < 373f3716a2de7adc739269ebb4d87e5bf4dc180c (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.8
Unaffected: 0 , < 4.8 (semver)
Unaffected: 6.6.160 , ≤ 6.6.* (semver)
Unaffected: 6.12.114 , ≤ 6.12.* (semver)
Unaffected: 6.18.57 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/cxgb4/mem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "68c1d2c085f205e8a5338bc3d3304f897deca4d9",
              "status": "affected",
              "version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
              "versionType": "git"
            },
            {
              "lessThan": "379cf06e6fe34af980064c6ccaf15d8e26ec4a42",
              "status": "affected",
              "version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
              "versionType": "git"
            },
            {
              "lessThan": "2fcd26f4680143e9ec477069530548dbe20fce6f",
              "status": "affected",
              "version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
              "versionType": "git"
            },
            {
              "lessThan": "6b15fc9bc117fb6597fa1c2cc30284aafe71101c",
              "status": "affected",
              "version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
              "versionType": "git"
            },
            {
              "lessThan": "373f3716a2de7adc739269ebb4d87e5bf4dc180c",
              "status": "affected",
              "version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/cxgb4/mem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.8"
            },
            {
              "lessThan": "4.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.57",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.160",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.114",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.57",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry()\n\nWhen the device is in the fatal error state, write_tpt_entry() returns -EIO\nbefore handing the caller\u0027s preallocated skb to the transmit path; its\nallocation-failure returns do the same. c4iw_dereg_mr() ignores the error\nand frees mhp, leaking mhp-\u003edereg_skb. c4iw_get_dma_mr() instead frees the\nskb a second time after dereg_mem() already consumed it, a double free.\n\nMake write_tpt_entry() the sole owner of a non-NULL skb, freeing it on\nevery return preceding handoff to c4iw_ofld_send(): fatal error, tpt and\nstag allocation failure. c4iw_ofld_send() consumes the skb on success and\nerror alike, so drop the redundant kfree_skb() in c4iw_get_dma_mr() after\ndereg_mem()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:51:33.618Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/68c1d2c085f205e8a5338bc3d3304f897deca4d9"
        },
        {
          "url": "https://git.kernel.org/stable/c/379cf06e6fe34af980064c6ccaf15d8e26ec4a42"
        },
        {
          "url": "https://git.kernel.org/stable/c/2fcd26f4680143e9ec477069530548dbe20fce6f"
        },
        {
          "url": "https://git.kernel.org/stable/c/6b15fc9bc117fb6597fa1c2cc30284aafe71101c"
        },
        {
          "url": "https://git.kernel.org/stable/c/373f3716a2de7adc739269ebb4d87e5bf4dc180c"
        }
      ],
      "title": "RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90417",
    "datePublished": "2026-09-17T16:09:42.342Z",
    "dateReserved": "2026-09-11T19:38:34.813Z",
    "dateUpdated": "2026-10-21T12:51:33.618Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-90417",
      "date": "2026-10-24",
      "epss": "0.00206",
      "percentile": "0.10035"
    },
    "microsoft_vex": {
      "current_release_date": "2026-10-22T01:13:15.000Z",
      "cve": "CVE-2026-90417",
      "id": "msrc_CVE-2026-90417",
      "initial_release_date": "2026-09-19T01:20:32.000Z",
      "product_status:known_affected": "3",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry()",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-90417.json",
      "version": "5"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/infiniband/hw/cxgb4/mem.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "68c1d2c085f205e8a5338bc3d3304f897deca4d9",
                    "status": "affected",
                    "version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "379cf06e6fe34af980064c6ccaf15d8e26ec4a42",
                    "status": "affected",
                    "version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "2fcd26f4680143e9ec477069530548dbe20fce6f",
                    "status": "affected",
                    "version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "6b15fc9bc117fb6597fa1c2cc30284aafe71101c",
                    "status": "affected",
                    "version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "373f3716a2de7adc739269ebb4d87e5bf4dc180c",
                    "status": "affected",
                    "version": "0f8ab0b6e91b4d5302ceee5ec12ce54d81297635",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/infiniband/hw/cxgb4/mem.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "4.8"
                  },
                  {
                    "lessThan": "4.8",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.160",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.114",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.57",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.2.*",
                    "status": "unaffected",
                    "version": "7.2.6",
                    "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\nRDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry()\n\nWhen the device is in the fatal error state, write_tpt_entry() returns -EIO\nbefore handing the caller\u0027s preallocated skb to the transmit path; its\nallocation-failure returns do the same. c4iw_dereg_mr() ignores the error\nand frees mhp, leaking mhp-\u003edereg_skb. c4iw_get_dma_mr() instead frees the\nskb a second time after dereg_mem() already consumed it, a double free.\n\nMake write_tpt_entry() the sole owner of a non-NULL skb, freeing it on\nevery return preceding handoff to c4iw_ofld_send(): fatal error, tpt and\nstag allocation failure. c4iw_ofld_send() consumes the skb on success and\nerror alike, so drop the redundant kfree_skb() in c4iw_get_dma_mr() after\ndereg_mem()."
          }
        ],
        "id": "CVE-2026-90417",
        "lastModified": "2026-10-21T13:20:54.340",
        "metrics": {},
        "published": "2026-09-17T17:17:46.050",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/2fcd26f4680143e9ec477069530548dbe20fce6f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/373f3716a2de7adc739269ebb4d87e5bf4dc180c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/379cf06e6fe34af980064c6ccaf15d8e26ec4a42"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/68c1d2c085f205e8a5338bc3d3304f897deca4d9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6b15fc9bc117fb6597fa1c2cc30284aafe71101c"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-21T05:13:05+00:00",
      "cve": "CVE-2026-90417",
      "id": "CVE-2026-90417",
      "initial_release_date": "2026-09-17T00:00:00+00:00",
      "product_status:known_affected": "277",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90417.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-10-20T00:34:13Z",
      "cve": "CVE-2026-90417",
      "id": "CVE-2026-90417",
      "initial_release_date": "2026-09-18T00:16:32Z",
      "product_status:known_affected": "744",
      "product_status:known_not_affected": "17",
      "product_status:recommended": "212",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-90417",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-90417.json",
      "version": "12"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.