{"id":"DEBIAN-CVE-2026-99214","details":"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't been enabled, vc4_hdmi_encoder_post_crtc_enable() hasn't 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+0x404/0x494 [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+0x404/0x494 [vc4] (P) [  201.766607]  vc4_hdmi_write_audio_infoframe+0x1c/0x28 [vc4] [  201.772247]  write_infoframe+0xbc/0x140 [drm_display_helper] [  201.777975]  drm_atomic_helper_connector_hdmi_update_audio_infoframe+0x80/0xdc [drm_display_helper] [  201.787140]  vc4_hdmi_audio_prepare+0x4ac/0x570 [vc4] [  201.792252]  drm_connector_hdmi_audio_prepare+0x24/0x30 [drm_display_helper] [  201.799390]  hdmi_codec_prepare+0x100/0x160 [snd_soc_hdmi_codec] [  201.805471]  snd_soc_pcm_dai_prepare+0xd4/0x100 [snd_soc_core] [  201.811375]  __soc_pcm_prepare+0x60/0x12c [snd_soc_core] [  201.816752]  soc_pcm_prepare+0x34/0x58 [snd_soc_core] [  201.821863]  snd_pcm_do_prepare+0x70/0x8c [snd_pcm] [  201.826798]  snd_pcm_action_nonatomic+0xe4/0x174 [snd_pcm] [  201.832350]  snd_pcm_prepare+0xc8/0xd8 [snd_pcm] [  201.837021]  snd_pcm_common_ioctl+0x458/0x614 [snd_pcm] [  201.842308]  snd_pcm_ioctl+0x30/0x48 [snd_pcm] [  201.846802]  __arm64_sys_ioctl+0x88/0xd8 [  201.850769]  invoke_syscall+0x48/0xf4 [  201.854470]  el0_svc_common+0x80/0xd8 [  201.858171]  do_el0_svc+0x1c/0x28 [  201.861520]  el0_svc+0x3c/0xb0 [  201.864605]  el0t_64_sync_handler+0x68/0xdc [  201.868834]  el0t_64_sync+0x198/0x19c [  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.","modified":"2026-10-29T06:00:21.009678172Z","published":"2026-10-28T11:17:42.887Z","upstream":["CVE-2026-99214"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-99214"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.12.100-1","6.12.101-1","6.12.105-1","6.12.107-1","6.12.111-1","6.12.113-1","6.12.38-1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1","6.12.69-1~bpo12+1","6.12.73-1","6.12.73-1~bpo12+1","6.12.74-1","6.12.74-2","6.12.74-2~bpo12+1","6.12.85-1","6.12.85-1~bpo12+1","6.12.86-1","6.12.86-1~bpo12+1","6.12.88-1","6.12.88-1~bpo12+1","6.12.90-1","6.12.90-1~bpo12+1","6.12.90-2","6.12.90-2~bpo12+1","6.12.94-1","6.12.94-1~bpo12+1","6.12.95-1","6.12.95-1~bpo12+1","6.12.96-1","6.13.10-1~exp1","6.13.11-1~exp1","6.13.2-1~exp1","6.13.3-1~exp1","6.13.4-1~exp1","6.13.5-1~exp1","6.13.6-1~exp1","6.13.7-1~exp1","6.13.8-1~exp1","6.13.9-1~exp1","6.13~rc6-1~exp1","6.13~rc7-1~exp1","6.14.3-1~exp1","6.14.5-1~exp1","6.14.6-1~exp1","6.15-1~exp1","6.15.1-1~exp1","6.15.2-1~exp1","6.15.3-1~exp1","6.15.4-1~exp1","6.15.5-1~exp1","6.15.6-1~exp1","6.15~rc7-1~exp1","6.16-1~exp1","6.16.1-1~exp1","6.16.10-1","6.16.11-1","6.16.12-1","6.16.12-1~bpo13+1","6.16.12-2","6.16.3-1","6.16.3-1~bpo13+1","6.16.5-1","6.16.6-1","6.16.7-1","6.16.8-1","6.16.9-1","6.16~rc7-1~exp1","6.17.10-1","6.17.11-1","6.17.12-1","6.17.13-1","6.17.13-1~bpo13+1","6.17.2-1~exp1","6.17.5-1~exp1","6.17.6-1","6.17.7-1","6.17.7-2","6.17.8-1","6.17.8-1~bpo13+1","6.17.9-1","6.18.1-1~exp1","6.18.10-1","6.18.12-1","6.18.12-1~bpo13+1","6.18.13-1","6.18.14-1","6.18.15-1","6.18.15-1~bpo13+1","6.18.2-1~exp1","6.18.3-1","6.18.5-1","6.18.5-1~bpo13+1","6.18.8-1","6.18.9-1","6.18.9-1~bpo13+1","6.18~rc4-1~exp1","6.18~rc4-1~exp2","6.18~rc5-1~exp1","6.18~rc6-1~exp1","6.18~rc7-1~exp1","6.19-1~exp1","6.19.10-1","6.19.10-1~bpo13+1","6.19.11-1","6.19.11-1~bpo13+1","6.19.12-1","6.19.13-1","6.19.13-1~bpo13+1","6.19.14-1","6.19.14-1~bpo13+1","6.19.2-1~exp1","6.19.3-1~exp1","6.19.4-1~exp1","6.19.5-1~exp1","6.19.6-1","6.19.6-2","6.19.6-2~bpo13+1","6.19.8-1","6.19.8-1~bpo13+1","6.19~rc4-1~exp1","6.19~rc5-1~exp1","6.19~rc6-1~exp1","6.19~rc7-1~exp1","6.19~rc8-1~exp1","7.0-1~exp1","7.0.1-1~exp1","7.0.10-1","7.0.10-1~bpo13+1","7.0.12-1","7.0.12-2","7.0.12-2~bpo13+1","7.0.13-1","7.0.13-1~bpo13+1","7.0.14-1","7.0.3-1","7.0.4-1","7.0.4-1~bpo13+1","7.0.7-1","7.0.7-1~bpo13+1","7.0.9-1","7.0.9-1~bpo13+1","7.1.1-1~exp1","7.1.10-1","7.1.12-1","7.1.13-1","7.1.13-1~bpo13+1","7.1.2-1~exp1","7.1.3-1","7.1.3-1+sunvdc","7.1.3-1~bpo13+1","7.1.4-1","7.1.5-1","7.1.6-1","7.1.7-1","7.1.7-1~bpo13+1","7.1.8-1","7.1.8-1~bpo13+1","7.1.8-2","7.1.9-1","7.1.9-1+sparc64","7.1~rc2-1~exp1","7.1~rc3-1~exp1","7.1~rc4-1~exp1","7.1~rc4-1~exp2","7.1~rc5-1~exp1","7.1~rc7-1~exp1","7.2.10-1","7.2.11-1","7.2.11-1~bpo13+1","7.2.12-1","7.2.13-1","7.2.2-1~exp1","7.2.3-1~exp1","7.2.6-1","7.2.6-1~bpo13+1","7.2.7-1","7.2.8-1","7.2.9-1","7.2.9-1~bpo13+1","7.2~rc3-1~exp1","7.2~rc5-1~exp1","7.2~rc7-1~exp1","7.3~rc6-1~exp1","7.3~rc7-1~exp1"],"ecosystem_specific":{"urgency":"not 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