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

Vulnerability from cvelistv5 – Published: 2026-09-25 10:22 – Updated: 2026-09-25 14:41
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
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3595375c2301653d5440d54b396df03499686c20 , < 03beb248d8a7bab30559a60d4df81f167e63b9e3 (git)
Affected: 3595375c2301653d5440d54b396df03499686c20 , < 81ad46bb33d8fd279aaa33af5296c648814c964b (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.19
Unaffected: 0 , < 6.19 (semver)
Unaffected: 7.2.7 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc3 , ≤ * (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/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"
            },
            {
              "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-rc3",
              "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-rc3",
                  "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": "2026-09-25T14:41:23.543Z",
        "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": "2026-09-25T14:41:23.543Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-97580",
      "date": "2026-09-28",
      "epss": "0.00154",
      "percentile": "0.0382"
    },
    "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": [
                  {
                    "lessThan": "03beb248d8a7bab30559a60d4df81f167e63b9e3",
                    "status": "affected",
                    "version": "3595375c2301653d5440d54b396df03499686c20",
                    "versionType": "git"
                  },
                  {
                    "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-rc3",
                    "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": "2026-09-25T15:18:00.170",
        "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"
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.



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.