CVE-2026-43294: drm: renesas: rz-du: mipi_dsi: fix kernel panic when rebooting for some panels
Vulnerability summary
CVE-2026-43294 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 4.6% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 6Timeline
- 08-05-2026PublishedVulnerability first disclosed.
- 21-10-2026Last modifiedVulnerability information updated.
Description
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
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.15%
Chance of exploitation in the next 30 days
Percentile
5%
Versus all other CVEs
30-day change
Decrease -0.01 pp
From 0.16% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu159 products
- linuxAll versions (No fix recorded)
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded)
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Chainguard5 products
- linux-aws-6.12All versions (No fix recorded)
- linux-azure-6.12All versions (No fix recorded)
- linux-gcp-6.12All versions (No fix recorded)
- linux-qemu-6.12All versions (No fix recorded)
- linux-vmware-6.12All versions (No fix recorded)
Linux2 products
- linux≥ 7a043f978ed1433bddb088a732e9bb91501ebd76, < 3cd7a71958c9f7f1def1a110e1ac98c022a554cd | ≥ 7a043f978ed1433bddb088a732e9bb91501ebd76, < ad9a3246e76b83cd19eb07088111a743a9558bcd | ≥ 7a043f978ed1433bddb088a732e9bb91501ebd76, < 79f42487ed60d0d5ffce97c3bb98f80c3d17735a | ≥ 7a043f978ed1433bddb088a732e9bb91501ebd76, < 41cda667ffc5074c56279c632b0c20024da6ecdd | ≥ 7a043f978ed1433bddb088a732e9bb91501ebd76, < 64aa8b3a60a825134f7d866adf05c024bbe0c24c | 6.2
- linux_kernel≥ 6.2, < 6.18.16 | ≥ 6.19, < 6.19.6
Debian1 product
- linuxAll versions (No fix recorded) | < 6.12.115-2 | < 6.19.6-1
4 vendors · 167 products
