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drm: renesas: rz-du: mipi_dsi: fix kernel panic when rebooting for some panels

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: drm: renesas: rz-du: mipi_dsi: fix kernel panic when rebooting for some panels Since commit 56de5e305d4b ("clk: renesas: r9a07g044: Add MSTOP for RZ/G2L") we may get the following kernel panic, for some panels, when rebooting: systemd-shutdown[1]: Rebooting. Call trace: ... do_serror+0x28/0x68 el1h_64_error_handler+0x34/0x50 el1h_64_error+0x6c/0x70 rzg2l_mipi_dsi_host_transfer+0x114/0x458 (P) mipi_dsi_device_transfer+0x44/0x58 mipi_dsi_dcs_set_display_off_multi+0x9c/0xc4 ili9881c_unprepare+0x38/0x88 drm_panel_unprepare+0xbc/0x108 This happens for panels that need to send MIPI-DSI commands in their unprepare() callback. Since the MIPI-DSI interface is stopped at that point, rzg2l_mipi_dsi_host_transfer() triggers the kernel panic. Fix by moving rzg2l_mipi_dsi_stop() to new callback function rzg2l_mipi_dsi_atomic_post_disable(). With this change we now have the correct power-down/stop sequence: systemd-shutdown[1]: Rebooting. rzg2l-mipi-dsi 10850000.dsi: rzg2l_mipi_dsi_atomic_disable(): entry ili9881c-dsi 10850000.dsi.0: ili9881c_unprepare(): entry rzg2l-mipi-dsi 10850000.dsi: rzg2l_mipi_dsi_atomic_post_disable(): entry reboot: Restarting system

Announced Source revision 1
Original source ↗

CVE-2026-43294

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-43294

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
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Prerequisites
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Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "7a043f978ed1433bddb088a732e9bb91501ebd76",
        "lessThan": "3cd7a71958c9f7f1def1a110e1ac98c022a554cd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7a043f978ed1433bddb088a732e9bb91501ebd76",
        "lessThan": "ad9a3246e76b83cd19eb07088111a743a9558bcd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7a043f978ed1433bddb088a732e9bb91501ebd76",
        "lessThan": "79f42487ed60d0d5ffce97c3bb98f80c3d17735a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7a043f978ed1433bddb088a732e9bb91501ebd76",
        "lessThan": "41cda667ffc5074c56279c632b0c20024da6ecdd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7a043f978ed1433bddb088a732e9bb91501ebd76",
        "lessThan": "64aa8b3a60a825134f7d866adf05c024bbe0c24c",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "6.2"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "6.2",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.6.160",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.114",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.16",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.6",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-43294

Source reference: /cveMetadata/cveId

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Event
#46282 · Revision 1
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