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CVE-2026-89866

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

media: chips-media: wave5: Resume device before setting EOS flag

Setting the EOS flag talks to the firmware via send_firmware_command(), which accesses VPU registers. Both the STREAMOFF path (wave5_vpu_dec_job_abort()) and the V4L2_DEC_CMD_STOP path (wave5_vpu_dec_stop()) can run while the device is runtime suspended, so those register accesses hit powered-down hardware and the SoC raises an asynchronous SError, panicking the kernel:

Resume the device with pm_runtime_resume_and_get() around the EOS firmware command and release it with pm_runtime_put_autosuspend(), matching the runtime PM handling already done in wave5_vpu_dec_device_run().

Detalles técnicos trazas, registros y código del informe original
  SError Interrupt on CPU3, code 0x00000000bf000000 -- SError
   send_firmware_command+0x2c/0x160 [wave5]
   wave5_vpu_dec_set_bitstream_flag+0x6c/0x80 [wave5]
   wave5_vpu_dec_update_bitstream_buffer+0x80/0xec [wave5]
   wave5_vpu_dec_job_abort+0x44/0xa0 [wave5]
   v4l2_m2m_cancel_job+0x110/0x19c [v4l2_mem2mem]
   v4l2_m2m_streamoff+0x24/0x140 [v4l2_mem2mem]

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-89866",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "9707a6254a8a6b978bde811a44fe07d86c229d1c",
              "lessThan": "2215e55ee1e5e69ad53862d968360c5aa63dd3a7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "9707a6254a8a6b978bde811a44fe07d86c229d1c",
              "lessThan": "a52e6f7923c17a672135b485ffd96fbd72f46267",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.8",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-16T11:16:54.743",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2215e55ee1e5e69ad53862d968360c5aa63dd3a7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a52e6f7923c17a672135b485ffd96fbd72f46267",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: chips-media: wave5: Resume device before setting EOS flag\n\nSetting the EOS flag talks to the firmware via send_firmware_command(),\nwhich accesses VPU registers. Both the STREAMOFF path\n(wave5_vpu_dec_job_abort()) and the V4L2_DEC_CMD_STOP path\n(wave5_vpu_dec_stop()) can run while the device is runtime suspended, so\nthose register accesses hit powered-down hardware and the SoC raises an\nasynchronous SError, panicking the kernel:\n\n  SError Interrupt on CPU3, code 0x00000000bf000000 -- SError\n   send_firmware_command+0x2c/0x160 [wave5]\n   wave5_vpu_dec_set_bitstream_flag+0x6c/0x80 [wave5]\n   wave5_vpu_dec_update_bitstream_buffer+0x80/0xec [wave5]\n   wave5_vpu_dec_job_abort+0x44/0xa0 [wave5]\n   v4l2_m2m_cancel_job+0x110/0x19c [v4l2_mem2mem]\n   v4l2_m2m_streamoff+0x24/0x140 [v4l2_mem2mem]\n\nResume the device with pm_runtime_resume_and_get() around the EOS\nfirmware command and release it with pm_runtime_put_autosuspend(),\nmatching the runtime PM handling already done in\nwave5_vpu_dec_device_run()."
    }
  ],
  "lastModified": "2026-09-16T11:16:54.743",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}