CVE-2026-98144 (GCVE-0-2026-98144)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:36 – Updated: 2026-10-15 10:12
VLAI
Title
accel/amdxdna: put the chained BO when its mapping fails
Summary
In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: put the chained BO when its mapping fails amdxdna_cmd_set_error() looks up the first BO of a command chain, which takes a reference, and drops it at the end of the function. The mapping of that BO is established in between, and the failure path returns without the put, so the reference is leaked. Ordinary use does not reach it. The chain has been submitted before any of this runs, so aie2_cmdlist_fill_slot() has already called amdxdna_cmd_get_op() on that BO and amdxdna_gem_vmap() has cached its address. What makes it reachable is that the BO is resolved again by handle here, and the handle is userspace's to recycle: closing it after submission and importing a dma-buf whose exporter implements no vmap onto the same id leaves amdxdna_gem_get_obj() returning an object this cannot map, since prime_import() types every import AMDXDNA_BO_SHARE.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7100 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d76856beb4a4a6c42244054cd780c00f2d33de4e , < eb90cb257e0792ac11f0347254bad3fc72417db6 (git)
Affected: d76856beb4a4a6c42244054cd780c00f2d33de4e , < 7e33ba3a1d48c2d20ed270dec9d2d08332585c8e (git)
Affected: 33819cca7b76d5c2385c054f054c4b672ab989d5 (git)
Affected: 6.18.57 , < 6.19 (semver)
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Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 7.2.7 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/accel/amdxdna/amdxdna_ctx.c"
          ],
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              "versionType": "git"
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          "vendor": "Linux",
          "versions": [
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            },
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              "version": "7.2.7",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: put the chained BO when its mapping fails\n\namdxdna_cmd_set_error() looks up the first BO of a command chain, which\ntakes a reference, and drops it at the end of the function. The mapping of\nthat BO is established in between, and the failure path returns without the\nput, so the reference is leaked.\n\nOrdinary use does not reach it. The chain has been submitted before any of\nthis runs, so aie2_cmdlist_fill_slot() has already called\namdxdna_cmd_get_op() on that BO and amdxdna_gem_vmap() has cached its\naddress. What makes it reachable is that the BO is resolved again by\nhandle here, and the handle is userspace\u0027s to recycle: closing it after\nsubmission and importing a dma-buf whose exporter implements no vmap onto\nthe same id leaves amdxdna_gem_get_obj() returning an object this cannot\nmap, since prime_import() types every import AMDXDNA_BO_SHARE."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-15T10:12:19.234Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/eb90cb257e0792ac11f0347254bad3fc72417db6"
        },
        {
          "url": "https://git.kernel.org/stable/c/7e33ba3a1d48c2d20ed270dec9d2d08332585c8e"
        }
      ],
      "title": "accel/amdxdna: put the chained BO when its mapping fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98144",
    "datePublished": "2026-09-25T10:36:19.093Z",
    "dateReserved": "2026-09-25T10:25:14.319Z",
    "dateUpdated": "2026-10-15T10:12:19.234Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-10-18",
      "epss": "0.00145",
      "percentile": "0.03393"
    },
    "nvd": {
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            "affectedData": [
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                "product": "Linux",
                "programFiles": [
                  "drivers/accel/amdxdna/amdxdna_ctx.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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                ]
              },
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                    "lessThanOrEqual": "*",
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                    "versionType": "original_commit_for_fix"
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                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: put the chained BO when its mapping fails\n\namdxdna_cmd_set_error() looks up the first BO of a command chain, which\ntakes a reference, and drops it at the end of the function. The mapping of\nthat BO is established in between, and the failure path returns without the\nput, so the reference is leaked.\n\nOrdinary use does not reach it. The chain has been submitted before any of\nthis runs, so aie2_cmdlist_fill_slot() has already called\namdxdna_cmd_get_op() on that BO and amdxdna_gem_vmap() has cached its\naddress. What makes it reachable is that the BO is resolved again by\nhandle here, and the handle is userspace\u0027s to recycle: closing it after\nsubmission and importing a dma-buf whose exporter implements no vmap onto\nthe same id leaves amdxdna_gem_get_obj() returning an object this cannot\nmap, since prime_import() types every import AMDXDNA_BO_SHARE."
          }
        ],
        "id": "CVE-2026-98144",
        "lastModified": "2026-10-15T11:18:11.760",
        "metrics": {},
        "published": "2026-09-25T11:17:45.933",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7e33ba3a1d48c2d20ed270dec9d2d08332585c8e"
          },
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Undergoing Analysis"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-28T16:22:38+00:00",
      "cve": "CVE-2026-98144",
      "id": "CVE-2026-98144",
      "initial_release_date": "2026-09-25T00:00:00+00:00",
      "product_status:known_not_affected": "276",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: accel/amdxdna: put the chained BO when its mapping fails",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98144.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-30T14:59:20Z",
      "cve": "CVE-2026-98144",
      "id": "CVE-2026-98144",
      "initial_release_date": "2026-09-25T23:46:10Z",
      "product_status:known_not_affected": "347",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98144",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98144.json",
      "version": "3"
    }
  }
}



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