{
  "cveId": "CVE-2026-99214",
  "url": "https://patchblox.com/security/cve/CVE-2026-99214",
  "summary": "CVE-2026-99214 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-99214, released November 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  drm/vc4: hdmi: Move packet RAM enable to PM runt...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/vc4: hdmi: Move packet RAM enable to PM runtime  Audio can be triggered by the HPD handler and start up before video has been restored, calling vc4_hdmi_write_infoframe() for the audio infoframe. vc4_hdmi_write_infoframe() needs Packet RAM to be on to store the infoframe, however, if the video hasn\u0027t been enabled, vc4_hdmi_encoder_post_crtc_enable() hasn\u0027t been called and therefore, the Packet RAM can be disabled by the time vc4_hdmi_write_infoframe() executes, causing the following splat:  [  201.570266] ------------[ cut here ]------------ [  201.570293] Packet RAM has to be on to store the packet. [  201.570367] WARNING: drivers/gpu/drm/vc4/vc4_hdmi.c:683 at vc4_hdmi_write_infoframe\u002B0x404/0x494 [vc4], CPU#0: wireplumber/1606 [...] [  201.658650] Hardware name: Raspberry Pi 4 Model B Rev 1.5 (DT) [...] [  201.758499] Call trace: [  201.760967]  vc4_hdmi_write_infoframe\u002B0x404/0x494 [vc4] (P) [  201.766607]  vc4_hdmi_write_audio_infoframe\u002B0x1c/0x28 [vc4] [  201.772247]  write_infoframe\u002B0xbc/0x140 [drm_display_helper] [  201.777975]  drm_atomic_helper_connector_hdmi_update_audio_infoframe\u002B0x80/0xdc [drm_display_helper] [  201.787140]  vc4_hdmi_audio_prepare\u002B0x4ac/0x570 [vc4] [  201.792252]  drm_connector_hdmi_audio_prepare\u002B0x24/0x30 [drm_display_helper] [  201.799390]  hdmi_codec_prepare\u002B0x100/0x160 [snd_soc_hdmi_codec] [  201.805471]  snd_soc_pcm_dai_prepare\u002B0xd4/0x100 [snd_soc_core] [  201.811375]  __soc_pcm_prepare\u002B0x60/0x12c [snd_soc_core] [  201.816752]  soc_pcm_prepare\u002B0x34/0x58 [snd_soc_core] [  201.821863]  snd_pcm_do_prepare\u002B0x70/0x8c [snd_pcm] [  201.826798]  snd_pcm_action_nonatomic\u002B0xe4/0x174 [snd_pcm] [  201.832350]  snd_pcm_prepare\u002B0xc8/0xd8 [snd_pcm] [  201.837021]  snd_pcm_common_ioctl\u002B0x458/0x614 [snd_pcm] [  201.842308]  snd_pcm_ioctl\u002B0x30/0x48 [snd_pcm] [  201.846802]  __arm64_sys_ioctl\u002B0x88/0xd8 [  201.850769]  invoke_syscall\u002B0x48/0xf4 [  201.854470]  el0_svc_common\u002B0x80/0xd8 [  201.858171]  do_el0_svc\u002B0x1c/0x28 [  201.861520]  el0_svc\u002B0x3c/0xb0 [  201.864605]  el0t_64_sync_handler\u002B0x68/0xdc [  201.868834]  el0t_64_sync\u002B0x198/0x19c [  201.872536] ---[ end trace 0000000000000000 ]---  Considering that Packet RAM enable is essentially a power management configuration, move its enabling/disabling to the Runtime PM hooks.  Note that post_crtc_disable() still stops all infoframes, but keeps Packet RAM enabled, leaving it to be disabled by runtime suspend.",
  "published": "2026-10-28T11:17:42Z",
  "severity": "",
  "epss": 0.00157,
  "epssPercentile": 0.04867,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-2",
      "fix": "DEBIAN-CVE-2026-99214",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99214",
      "released": "2026-11-03T18:58:21Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.13-1",
      "fix": "DEBIAN-CVE-2026-99214",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99214",
      "released": "2026-11-03T18:58:21Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}