CVE-2026-97580 (GCVE-0-2026-97580)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:22 – Updated: 2026-10-19 09:09
VLAI
Title
media: rkvdec: bound HEVC tile loops and PPS id to the array capacity
Summary
In the Linux kernel, the following vulnerability has been resolved: media: rkvdec: bound HEVC tile loops and PPS id to the array capacity compute_tiles_uniform() and compute_tiles_non_uniform() loop over num_tile_columns_minus1 + 1 / num_tile_rows_minus1 + 1 entries, and assemble_hw_pps() writes one COLUMN_WIDTH / ROW_HEIGHT register per tile and indexes priv_tbl->param_set[] by pic_parameter_set_id, all taken from the untrusted PPS. Use the bounded v4l2_hevc_pps_num_tile_columns() / v4l2_hevc_pps_num_tile_rows() helpers for the tile loops, and bail out of assemble_hw_pps() before indexing priv_tbl->param_set[] with an out-of-range pic_parameter_set_id, so the writes stay within the hardware tables.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6641 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3595375c2301653d5440d54b396df03499686c20 , < 03beb248d8a7bab30559a60d4df81f167e63b9e3 (git)
Affected: 3595375c2301653d5440d54b396df03499686c20 , < 81ad46bb33d8fd279aaa33af5296c648814c964b (git)
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Linux Linux Affected: 6.19
Unaffected: 0 , < 6.19 (semver)
Unaffected: 7.2.7 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/rockchip/rkvdec/rkvdec-hevc-common.c",
            "drivers/media/platform/rockchip/rkvdec/rkvdec-hevc.c",
            "drivers/media/platform/rockchip/rkvdec/rkvdec-vdpu381-hevc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "03beb248d8a7bab30559a60d4df81f167e63b9e3",
              "status": "affected",
              "version": "3595375c2301653d5440d54b396df03499686c20",
              "versionType": "git"
            },
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              "lessThan": "81ad46bb33d8fd279aaa33af5296c648814c964b",
              "status": "affected",
              "version": "3595375c2301653d5440d54b396df03499686c20",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/rockchip/rkvdec/rkvdec-hevc-common.c",
            "drivers/media/platform/rockchip/rkvdec/rkvdec-hevc.c",
            "drivers/media/platform/rockchip/rkvdec/rkvdec-vdpu381-hevc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "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": "7.2.7",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: rkvdec: bound HEVC tile loops and PPS id to the array capacity\n\ncompute_tiles_uniform() and compute_tiles_non_uniform() loop over\nnum_tile_columns_minus1 + 1 / num_tile_rows_minus1 + 1 entries, and\nassemble_hw_pps() writes one COLUMN_WIDTH / ROW_HEIGHT register per tile\nand indexes priv_tbl-\u003eparam_set[] by pic_parameter_set_id, all taken from\nthe untrusted PPS. Use the bounded v4l2_hevc_pps_num_tile_columns() /\nv4l2_hevc_pps_num_tile_rows() helpers for the tile loops, and bail out of\nassemble_hw_pps() before indexing priv_tbl-\u003eparam_set[] with an\nout-of-range pic_parameter_set_id, so the writes stay within the hardware\ntables."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bad values are fields of the V4L2_CID_STATELESS_HEVC_PPS control, which a local process sets with VIDIOC_S_EXT_CTRLS on the rkvdec /dev/videoN node. rkvdec_hevc_run() then passes them to assemble_hw_pps() and compute_tiles_*(). No network protocol delivers these fields to the kernel; a userspace bitstream parser sits in between.\nAC:L - std_validate_compound() never range-checks num_tile_columns_minus1, num_tile_rows_minus1 or pic_parameter_set_id, all u8 values up to 255. The attacker sets TILES_ENABLED with a value above 19, or pic_parameter_set_id of 64 or more, queues a decode request, and the out-of-bounds write happens every time.\nPR:L - rkvdec_open() and the stateless control and request ioctls have no capability checks. The attacker needs only ordinary access to the decoder device node, such as video group membership or a media service context.\nUI:N - The attacker supplies the malicious PPS control and triggers the decode job alone. No other user has to do anything.\nS:U - This is memory corruption inside the kernel, reached from a local process. The impact stays within the kernel\u0027s own security authority; no VM or IOMMU boundary is crossed.\nC:H - In rkvdec-vdpu381-hevc.c, assemble_hw_pps() lets compute_tiles_uniform()/compute_tiles_non_uniform() write up to 256 u16 entries into the 20- and 22-entry arrays column_width[] and row_height[] on the kernel stack. The non-uniform path also reads past pps-\u003ecolumn_width_minus1[]. Stack corruption like this can be used to leak kernel memory.\nI:H - The loops overwrite the stack past column_width[20]/row_height[22] with values derived from attacker-set PPS and SPS fields. Separately, param_set[pic_parameter_set_id] with an id of 64 or more, and the COLUMN_WIDTH(i)/ROW_HEIGHT(i) WRITE_PPS loop, write outside the intended hardware tables. Both are out-of-bounds kernel writes.\nA:H - Overflowing the column_width/row_height arrays on the stack trips the stack protector or corrupts saved state, which causes a kernel panic or oops. The attacker can trigger it again with every queued decode request."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:09:42.749Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/03beb248d8a7bab30559a60d4df81f167e63b9e3"
        },
        {
          "url": "https://git.kernel.org/stable/c/81ad46bb33d8fd279aaa33af5296c648814c964b"
        }
      ],
      "title": "media: rkvdec: bound HEVC tile loops and PPS id to the array capacity",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97580",
    "datePublished": "2026-09-25T10:22:01.832Z",
    "dateReserved": "2026-09-24T16:01:01.156Z",
    "dateUpdated": "2026-10-19T09:09:42.749Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-97580",
      "date": "2026-11-14",
      "epss": "0.00154",
      "percentile": "0.04581"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/media/platform/rockchip/rkvdec/rkvdec-hevc-common.c",
                  "drivers/media/platform/rockchip/rkvdec/rkvdec-hevc.c",
                  "drivers/media/platform/rockchip/rkvdec/rkvdec-vdpu381-hevc.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
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                    "versionType": "git"
                  },
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                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/media/platform/rockchip/rkvdec/rkvdec-hevc-common.c",
                  "drivers/media/platform/rockchip/rkvdec/rkvdec-hevc.c",
                  "drivers/media/platform/rockchip/rkvdec/rkvdec-vdpu381-hevc.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.19"
                  },
                  {
                    "lessThan": "6.19",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
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                    "status": "unaffected",
                    "version": "7.2.7",
                    "versionType": "semver"
                  },
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                    "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\nmedia: rkvdec: bound HEVC tile loops and PPS id to the array capacity\n\ncompute_tiles_uniform() and compute_tiles_non_uniform() loop over\nnum_tile_columns_minus1 + 1 / num_tile_rows_minus1 + 1 entries, and\nassemble_hw_pps() writes one COLUMN_WIDTH / ROW_HEIGHT register per tile\nand indexes priv_tbl-\u003eparam_set[] by pic_parameter_set_id, all taken from\nthe untrusted PPS. Use the bounded v4l2_hevc_pps_num_tile_columns() /\nv4l2_hevc_pps_num_tile_rows() helpers for the tile loops, and bail out of\nassemble_hw_pps() before indexing priv_tbl-\u003eparam_set[] with an\nout-of-range pic_parameter_set_id, so the writes stay within the hardware\ntables."
          }
        ],
        "id": "CVE-2026-97580",
        "lastModified": "2026-10-19T10:17:27.333",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-09-25T11:17:08.790",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/03beb248d8a7bab30559a60d4df81f167e63b9e3"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/81ad46bb33d8fd279aaa33af5296c648814c964b"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-11-06T02:28:08+00:00",
      "cve": "CVE-2026-97580",
      "id": "CVE-2026-97580",
      "initial_release_date": "2026-09-25T00:00:00+00:00",
      "product_status:known_not_affected": "203",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: media: rkvdec: bound HEVC tile loops and PPS id to the array capacity",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97580.json",
      "version": "3"
    }
  }
}



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