CVE-2026-80657 (GCVE-0-2026-80657)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:49 – Updated: 2026-08-28 06:49
VLAI
Title
accel/amdxdna: Guard management mailbox channel cleanup against NULL pointer
Summary
In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Guard management mailbox channel cleanup against NULL pointer The management mailbox channel cleanup helpers can be called from error handling paths when mgmt_chann has already been destroyed. Add NULL checks to xdna_mailbox_free_channel() and xdna_mailbox_stop_channel() so the cleanup path safely returns instead of dereferencing a NULL mailbox channel pointer.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b87f920b934426a24d54613f12ed67c03ae05024 , < 83d6d375f357ed2702b28d739511aad56d485de7 (git)
Affected: b87f920b934426a24d54613f12ed67c03ae05024 , < 506255d46bdb93a281cf39e72abbca124f5c7a1b (git)
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Linux Linux Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/accel/amdxdna/amdxdna_mailbox.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
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          "programFiles": [
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          ],
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          "vendor": "Linux",
          "versions": [
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            },
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              "version": "0",
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            },
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            },
            {
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              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: Guard management mailbox channel cleanup against NULL pointer\n\nThe management mailbox channel cleanup helpers can be called from\nerror handling paths when mgmt_chann has already been destroyed.\n\nAdd NULL checks to xdna_mailbox_free_channel() and\nxdna_mailbox_stop_channel() so the cleanup path safely returns instead\nof dereferencing a NULL mailbox channel pointer."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-28T06:49:03.200Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/83d6d375f357ed2702b28d739511aad56d485de7"
        },
        {
          "url": "https://git.kernel.org/stable/c/506255d46bdb93a281cf39e72abbca124f5c7a1b"
        }
      ],
      "title": "accel/amdxdna: Guard management mailbox channel cleanup against NULL pointer",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80657",
    "datePublished": "2026-08-28T06:49:03.200Z",
    "dateReserved": "2026-08-26T14:34:25.780Z",
    "dateUpdated": "2026-08-28T06:49:03.200Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-80657",
      "date": "2026-09-01",
      "epss": "0.00155",
      "percentile": "0.04976"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-80657\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-28T08:16:50.817\",\"lastModified\":\"2026-08-28T08:16:50.817\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\naccel/amdxdna: Guard management mailbox channel cleanup against NULL pointer\\n\\nThe management mailbox channel cleanup helpers can be called from\\nerror handling paths when mgmt_chann has already been destroyed.\\n\\nAdd NULL checks to xdna_mailbox_free_channel() and\\nxdna_mailbox_stop_channel() so the cleanup path safely returns instead\\nof dereferencing a NULL mailbox channel pointer.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/accel/amdxdna/amdxdna_mailbox.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b87f920b934426a24d54613f12ed67c03ae05024\",\"lessThan\":\"83d6d375f357ed2702b28d739511aad56d485de7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"b87f920b934426a24d54613f12ed67c03ae05024\",\"lessThan\":\"506255d46bdb93a281cf39e72abbca124f5c7a1b\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/accel/amdxdna/amdxdna_mailbox.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/506255d46bdb93a281cf39e72abbca124f5c7a1b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/83d6d375f357ed2702b28d739511aad56d485de7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-09-01T08:24:21+00:00",
      "cve": "CVE-2026-80657",
      "id": "CVE-2026-80657",
      "initial_release_date": "2026-08-28T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: accel/amdxdna: Guard management mailbox channel cleanup against NULL pointer",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80657.json",
      "version": "3"
    }
  }
}



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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

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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.


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