CVE-2026-92514 (GCVE-0-2026-92514)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-09-17 16:10
VLAI
Title
RDMA/erdma: Fix CEQ tasklet use-after-free on removal
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Fix CEQ tasklet use-after-free on removal Each CEQ interrupt handler only schedules eqc->tasklet. The tasklet calls erdma_ceq_completion_handler(), which reads the DMA-coherent EQ ring through get_next_valid_eqe() and updates eq->dbrec through notify_eq(). erdma_ceqs_uninit() frees each CEQ IRQ and then destroys its EQ. free_irq() prevents another hard IRQ and waits for an in-flight handler, but it does not drain a tasklet that the handler already scheduled. The tasklet can therefore access eq->qbuf or eq->dbrec after erdma_eq_destroy() frees them. Clearing ceq_cb->ready does not synchronize with a tasklet that already passed the check at the start of erdma_ceq_completion_handler(). Kill the tasklet after free_irq(), when no handler can schedule it again, and before erdma_ceq_uninit_one() releases the EQ buffers.
Severity
No CVSS data available.
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f2a0a630b953451a59a2612ad8c29246638f0a38 , < 0e8b78dabb1f156db05ffe74c6eae861167c7c21 (git)
Affected: f2a0a630b953451a59a2612ad8c29246638f0a38 , < 6e129c1310abfa786a510cc63e69c5ef12349048 (git)
Affected: f2a0a630b953451a59a2612ad8c29246638f0a38 , < f738c0a372d36a10dfae6dc357717c13b2aa72f4 (git)
Affected: f2a0a630b953451a59a2612ad8c29246638f0a38 , < a60c36d8d17f1b86705523d5eb6d290df28831e5 (git)
Affected: f2a0a630b953451a59a2612ad8c29246638f0a38 , < 61a25b8d333e1eb2a189881d516f8d5194e26840 (git)
Affected: f2a0a630b953451a59a2612ad8c29246638f0a38 , < 0ca79979384f031d710c4b3bae065dcb5d95aca3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/erdma/erdma_eq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0e8b78dabb1f156db05ffe74c6eae861167c7c21",
              "status": "affected",
              "version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
              "versionType": "git"
            },
            {
              "lessThan": "6e129c1310abfa786a510cc63e69c5ef12349048",
              "status": "affected",
              "version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
              "versionType": "git"
            },
            {
              "lessThan": "f738c0a372d36a10dfae6dc357717c13b2aa72f4",
              "status": "affected",
              "version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
              "versionType": "git"
            },
            {
              "lessThan": "a60c36d8d17f1b86705523d5eb6d290df28831e5",
              "status": "affected",
              "version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
              "versionType": "git"
            },
            {
              "lessThan": "61a25b8d333e1eb2a189881d516f8d5194e26840",
              "status": "affected",
              "version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
              "versionType": "git"
            },
            {
              "lessThan": "0ca79979384f031d710c4b3bae065dcb5d95aca3",
              "status": "affected",
              "version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/erdma/erdma_eq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/erdma: Fix CEQ tasklet use-after-free on removal\n\nEach CEQ interrupt handler only schedules eqc-\u003etasklet. The tasklet calls\nerdma_ceq_completion_handler(), which reads the DMA-coherent EQ ring\nthrough get_next_valid_eqe() and updates eq-\u003edbrec through notify_eq().\n\nerdma_ceqs_uninit() frees each CEQ IRQ and then destroys its EQ.\nfree_irq() prevents another hard IRQ and waits for an in-flight handler,\nbut it does not drain a tasklet that the handler already scheduled. The\ntasklet can therefore access eq-\u003eqbuf or eq-\u003edbrec after\nerdma_eq_destroy() frees them.\n\nClearing ceq_cb-\u003eready does not synchronize with a tasklet that already\npassed the check at the start of erdma_ceq_completion_handler().\n\nKill the tasklet after free_irq(), when no handler can schedule it again,\nand before erdma_ceq_uninit_one() releases the EQ buffers."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:10:23.462Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0e8b78dabb1f156db05ffe74c6eae861167c7c21"
        },
        {
          "url": "https://git.kernel.org/stable/c/6e129c1310abfa786a510cc63e69c5ef12349048"
        },
        {
          "url": "https://git.kernel.org/stable/c/f738c0a372d36a10dfae6dc357717c13b2aa72f4"
        },
        {
          "url": "https://git.kernel.org/stable/c/a60c36d8d17f1b86705523d5eb6d290df28831e5"
        },
        {
          "url": "https://git.kernel.org/stable/c/61a25b8d333e1eb2a189881d516f8d5194e26840"
        },
        {
          "url": "https://git.kernel.org/stable/c/0ca79979384f031d710c4b3bae065dcb5d95aca3"
        }
      ],
      "title": "RDMA/erdma: Fix CEQ tasklet use-after-free on removal",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-92514",
    "datePublished": "2026-09-17T16:10:23.462Z",
    "dateReserved": "2026-09-16T12:21:13.873Z",
    "dateUpdated": "2026-09-17T16:10:23.462Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/infiniband/hw/erdma/erdma_eq.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "0e8b78dabb1f156db05ffe74c6eae861167c7c21",
                    "status": "affected",
                    "version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "6e129c1310abfa786a510cc63e69c5ef12349048",
                    "status": "affected",
                    "version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "f738c0a372d36a10dfae6dc357717c13b2aa72f4",
                    "status": "affected",
                    "version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "a60c36d8d17f1b86705523d5eb6d290df28831e5",
                    "status": "affected",
                    "version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "61a25b8d333e1eb2a189881d516f8d5194e26840",
                    "status": "affected",
                    "version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "0ca79979384f031d710c4b3bae065dcb5d95aca3",
                    "status": "affected",
                    "version": "f2a0a630b953451a59a2612ad8c29246638f0a38",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/infiniband/hw/erdma/erdma_eq.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.0"
                  },
                  {
                    "lessThan": "6.0",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.188",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.157",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.110",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.52",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.2.*",
                    "status": "unaffected",
                    "version": "7.2.6",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.3-rc1",
                    "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/erdma: Fix CEQ tasklet use-after-free on removal\n\nEach CEQ interrupt handler only schedules eqc-\u003etasklet. The tasklet calls\nerdma_ceq_completion_handler(), which reads the DMA-coherent EQ ring\nthrough get_next_valid_eqe() and updates eq-\u003edbrec through notify_eq().\n\nerdma_ceqs_uninit() frees each CEQ IRQ and then destroys its EQ.\nfree_irq() prevents another hard IRQ and waits for an in-flight handler,\nbut it does not drain a tasklet that the handler already scheduled. The\ntasklet can therefore access eq-\u003eqbuf or eq-\u003edbrec after\nerdma_eq_destroy() frees them.\n\nClearing ceq_cb-\u003eready does not synchronize with a tasklet that already\npassed the check at the start of erdma_ceq_completion_handler().\n\nKill the tasklet after free_irq(), when no handler can schedule it again,\nand before erdma_ceq_uninit_one() releases the EQ buffers."
          }
        ],
        "id": "CVE-2026-92514",
        "lastModified": "2026-09-17T17:17:54.243",
        "metrics": {},
        "published": "2026-09-17T17:17:54.243",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0ca79979384f031d710c4b3bae065dcb5d95aca3"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0e8b78dabb1f156db05ffe74c6eae861167c7c21"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/61a25b8d333e1eb2a189881d516f8d5194e26840"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6e129c1310abfa786a510cc63e69c5ef12349048"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/a60c36d8d17f1b86705523d5eb6d290df28831e5"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f738c0a372d36a10dfae6dc357717c13b2aa72f4"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

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.


Loading…