CVE-2026-43222 (GCVE-0-2026-43222)
Vulnerability from cvelistv5
Published
2026-05-06 11:28
Modified
2026-08-05 12:26
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: media: verisilicon: AV1: Fix tile info buffer size Each tile info is composed of: row_sb, col_sb, start_pos and end_pos (4 bytes each). So the total required memory is AV1_MAX_TILES * 16 bytes. Use the correct #define to allocate the buffer and avoid writing tile info in non-allocated memory.
References
Impacted products
Vendor Product Version
Linux Linux Version: 727a400686a2c0d25015c9e44916a59b72882f83
Version: 727a400686a2c0d25015c9e44916a59b72882f83
Version: 727a400686a2c0d25015c9e44916a59b72882f83
Version: 727a400686a2c0d25015c9e44916a59b72882f83
Version: 727a400686a2c0d25015c9e44916a59b72882f83
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/verisilicon/rockchip_vpu981_hw_av1_dec.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "versionType": "git"
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/verisilicon/rockchip_vpu981_hw_av1_dec.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.128",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.16",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: verisilicon: AV1: Fix tile info buffer size\n\nEach tile info is composed of: row_sb, col_sb, start_pos\nand end_pos (4 bytes each). So the total required memory\nis AV1_MAX_TILES * 16 bytes.\nUse the correct #define to allocate the buffer and avoid\nwriting tile info in non-allocated memory."
        }
      ],
      "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 vulnerable code is reached through local V4L2 mem2mem decoder device operations and media request/ioctl submission to the Rockchip Verisilicon AV1 decoder, not directly by packets in an in-kernel network protocol.\nAC:L - An attacker can reliably submit AV1 frame and tile group controls with enough tiles to drive the undersized tile info buffer write; no race or uncontrollable timing condition is required.\nPR:L - The driver open and decode path has no capability check, but exploitation requires local access to the decoder device node or an equivalent low-privileged local media client context.\nUI:N - A local attacker with access to the V4L2 decoder can trigger the overflow directly by issuing ioctls and queueing a decode request; no separate victim action is needed.\nS:U - The corruption occurs within the kernel driver and impacts the same kernel security authority; there is no VM, IOMMU, or cross-scope boundary involved.\nC:H - This is an out-of-bounds write from kernel context into DMA-coherent memory, and kernel memory corruption is reasonably exploitable for disclosure primitives in severe cases.\nI:H - The bug writes attacker-influenced tile metadata past an undersized allocation, so it is a kernel out-of-bounds write with potential for arbitrary memory corruption or code execution.\nA:H - Even without full exploitation, writing beyond the allocated coherent buffer can corrupt adjacent memory or allocator state and plausibly crash or hang the kernel."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:26:41.823Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a5b1ddbe31f49b4da78642157589970e9b60a231"
        },
        {
          "url": "https://git.kernel.org/stable/c/34f36f9c6114af781a5a4f7a7c99334c85b73fc7"
        },
        {
          "url": "https://git.kernel.org/stable/c/f122f2b3ce9dbde60bf7ab0b180fe4a01f9d9bc4"
        },
        {
          "url": "https://git.kernel.org/stable/c/74abfadd7ef5ac9f3a6111d550cc651d1457c641"
        },
        {
          "url": "https://git.kernel.org/stable/c/a505ca2db89ad92a8d8d27fa68ebafb12e04a679"
        }
      ],
      "title": "media: verisilicon: AV1: Fix tile info buffer size",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43222",
    "datePublished": "2026-05-06T11:28:22.291Z",
    "dateReserved": "2026-05-01T14:12:55.994Z",
    "dateUpdated": "2026-08-05T12:26:41.823Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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