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NVD / CVE Program· CNA Linux

CVE-2026-31562: drm/mediatek: dsi: Store driver data before invoking mipi_dsi_host_register

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.15% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 4cfdfeb6ac06079f92fccd977fa742d6c5b8dd3a, 57b4864ca02f76d7debe8ce14c912335aef16055, 9a709b7e36324dfc1e6728eb81405470b7ae84e5.

Low priority for now. Upgrade to Linux Linux 4cfdfeb6ac06079f92fccd977fa742d6c5b8dd3a, 57b4864ca02f76d7debe8ce14c912335aef16055, 9a709b7e36324dfc1e6728eb81405470b7ae84e5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: dsi: Store driver data before invoking mipi_dsi_host_register The call to mipi_dsi_host_register triggers a callback to mtk_dsi_bind, which uses dev_get_drvdata to retrieve the mtk_dsi struct, so this structure needs to be stored inside the driver data before invoking it. As drvdata is currently uninitialized it leads to a crash when registering the DSI DRM encoder right after acquiring the mode_config.idr_mutex, blocking all subsequent DRM operations. Fixes the following crash during mediatek-drm probe (tested on Xiaomi Smart Clock x04g): Unable to handle kernel NULL pointer dereference at virtual address 0000000000000040 [...] Modules linked in: mediatek_drm(+) drm_display_helper cec drm_client_lib drm_dma_helper drm_kms_helper panel_simple [...] Call trace: drm_mode_object_add+0x58/0x98 (P) __drm_encoder_init+0x48/0x140 drm_encoder_init+0x6c/0xa0 drm_simple_encoder_init+0x20/0x34 [drm_kms_helper] mtk_dsi_bind+0x34/0x13c [mediatek_drm] component_bind_all+0x120/0x280 mtk_drm_bind+0x284/0x67c [mediatek_drm] try_to_bring_up_aggregate_device+0x23c/0x320 __component_add+0xa4/0x198 component_add+0x14/0x20 mtk_dsi_host_attach+0x78/0x100 [mediatek_drm] mipi_dsi_attach+0x2c/0x50 panel_simple_dsi_probe+0x4c/0x9c [panel_simple] mipi_dsi_drv_probe+0x1c/0x28 really_probe+0xc0/0x3dc __driver_probe_device+0x80/0x160 driver_probe_device+0x40/0x120 __device_attach_driver+0xbc/0x17c bus_for_each_drv+0x88/0xf0 __device_attach+0x9c/0x1cc device_initial_probe+0x54/0x60 bus_probe_device+0x34/0xa0 device_add+0x5b0/0x800 mipi_dsi_device_register_full+0xdc/0x16c mipi_dsi_host_register+0xc4/0x17c mtk_dsi_probe+0x10c/0x260 [mediatek_drm] platform_probe+0x5c/0xa4 really_probe+0xc0/0x3dc __driver_probe_device+0x80/0x160 driver_probe_device+0x40/0x120 __driver_attach+0xc8/0x1f8 bus_for_each_dev+0x7c/0xe0 driver_attach+0x24/0x30 bus_add_driver+0x11c/0x240 driver_register+0x68/0x130 __platform_register_drivers+0x64/0x160 mtk_drm_init+0x24/0x1000 [mediatek_drm] do_one_initcall+0x60/0x1d0 do_init_module+0x54/0x240 load_module+0x1838/0x1dc0 init_module_from_file+0xd8/0xf0 __arm64_sys_finit_module+0x1b4/0x428 invoke_syscall.constprop.0+0x48/0xc8 do_el0_svc+0x3c/0xb8 el0_svc+0x34/0xe8 el0t_64_sync_handler+0xa0/0xe4 el0t_64_sync+0x198/0x19c Code: 52800022 941004ab 2a0003f3 37f80040 (29005a80)

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Apr 24, 2026
Updated
Oct 21, 2026
EPSS
0.1% · 4th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel6.9.1 and later · before 6.18.21
  • linux linux kernel6.19 and later · before 6.19.11
  • linux linux kernel6.9
  • linux linux kernel7.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 6.9affected
    • e4732b590a77318dff134612b013d66d2448ab20 and later · before 57b4864ca02f76d7debe8ce14c912335aef16055affected · git
    • e4732b590a77318dff134612b013d66d2448ab20 and later · before 9a709b7e36324dfc1e6728eb81405470b7ae84e5affected · git
    • e4732b590a77318dff134612b013d66d2448ab20 and later · before df03f5ac1eae7c5a2c01846e3e64dfc2870eec6baffected · git
    • e4732b590a77318dff134612b013d66d2448ab20 and later · before 4cfdfeb6ac06079f92fccd977fa742d6c5b8dd3aaffected · git
    • before 6.9not affected · semver
    • 6.12.114 and later · up to and including 6.12.*not affected · semver
    • 6.18.21 and later · up to and including 6.18.*not affected · semver
    • 6.19.11 and later · up to and including 6.19.*not affected · semver
    • 7.0 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:13linuxfrom 0—
Debian:14linuxbefore 6.19.11-16.19.11-1
openSUSE:Leap 16.0dtb-aarch64before 6.12.0-160000.35.16.12.0-160000.35.1
openSUSE:Leap 16.0kernel-64kbbefore 6.12.0-160000.35.16.12.0-160000.35.1
openSUSE:Leap 16.0kernel-azurebefore 6.12.0-160000.35.16.12.0-160000.35.1
openSUSE:Leap 16.0kernel-defaultbefore 6.12.0-160000.35.16.12.0-160000.35.1
openSUSE:Leap 16.0kernel-default-basebefore 6.12.0-160000.35.1.160000.2.166.12.0-160000.35.1.160000.2.16
openSUSE:Leap 16.0kernel-docsbefore 6.12.0-160000.35.16.12.0-160000.35.1
openSUSE:Leap 16.0kernel-kvmsmallbefore 6.12.0-160000.35.16.12.0-160000.35.1
openSUSE:Leap 16.0kernel-obs-buildbefore 6.12.0-160000.35.16.12.0-160000.35.1
openSUSE:Leap 16.0kernel-obs-qabefore 6.12.0-160000.35.16.12.0-160000.35.1
openSUSE:Leap 16.0kernel-rtbefore 6.12.0-160000.35.16.12.0-160000.35.1
openSUSE:Leap 16.0kernel-sourcebefore 6.12.0-160000.35.16.12.0-160000.35.1
openSUSE:Leap 16.0kernel-symsbefore 6.12.0-160000.35.16.12.0-160000.35.1
openSUSE:Leap 16.0kernel-zfcpdumpbefore 6.12.0-160000.35.16.12.0-160000.35.1
SUSE:Linux Enterprise High Availability Extension 16.0kernel-defaultbefore 6.12.0-160000.35.16.12.0-160000.35.1
SUSE:Linux Enterprise Server 16.0kernel-azurebefore 6.12.0-160000.35.16.12.0-160000.35.1
SUSE:Linux Enterprise Server 16.0kernel-docsbefore 6.12.0-160000.35.16.12.0-160000.35.1
SUSE:Linux Enterprise Server 16.0kernel-kvmsmallbefore 6.12.0-160000.35.16.12.0-160000.35.1
SUSE:Linux Enterprise Server 16.0kernel-obs-qabefore 6.12.0-160000.35.16.12.0-160000.35.1
SUSE:Linux Enterprise Server 16.0kernel-zfcpdumpbefore 6.12.0-160000.35.16.12.0-160000.35.1
SUSE:Linux Micro 6.2kernel-64kbbefore 6.12.0-160000.35.16.12.0-160000.35.1
SUSE:Linux Micro 6.2kernel-default-basebefore 6.12.0-160000.35.1.160000.2.166.12.0-160000.35.1.160000.2.16
SUSE:Linux Micro 6.2kernel-rtbefore 6.12.0-160000.35.16.12.0-160000.35.1

+3

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-31557Apr 24, 2026 · nvmet: move async event work off nvmet-wq
    30Monitor
  • ← EarlierCVE-2026-31560Apr 24, 2026 · spi: spi-dw-dma: fix print error log when wait finish transaction
    22Monitor
  • Later →CVE-2026-31563Apr 24, 2026 · net: macb: Use dev_consume_skb_any() to free TX SKBs
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux4cfdfeb6ac06079f92fccd977fa742d6c5b8dd3aVendor (CNA)
Linux Linux57b4864ca02f76d7debe8ce14c912335aef16055Vendor (CNA)
Linux Linux9a709b7e36324dfc1e6728eb81405470b7ae84e5Vendor (CNA)
Linux Linuxdf03f5ac1eae7c5a2c01846e3e64dfc2870eec6bVendor (CNA)
debian:linux6.19.11-1 · Debian:14Package registry (OSV)
opensuse:dtb-aarch646.12.0-160000.35.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-64kb6.12.0-160000.35.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-azure6.12.0-160000.35.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-default6.12.0-160000.35.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-default-base6.12.0-160000.35.1.160000.2.16 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-docs6.12.0-160000.35.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-kvmsmall6.12.0-160000.35.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-obs-build6.12.0-160000.35.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-obs-qa6.12.0-160000.35.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-rt6.12.0-160000.35.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-source6.12.0-160000.35.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:kernel-syms6.12.0-160000.35.1 · openSUSE:Leap 16.0Package registry (OSV)
suse:kernel-64kb6.12.0-160000.35.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-azure6.12.0-160000.35.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:kernel-default6.12.0-160000.35.1 · SUSE:Linux Enterprise High Availability Extension 16.0Package registry (OSV)
suse:kernel-default-base6.12.0-160000.35.1.160000.2.16 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-docs6.12.0-160000.35.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:kernel-kvmsmall6.12.0-160000.35.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:kernel-obs-build6.12.0-160000.35.1 · SUSE:Linux Micro Extras 6.2Package registry (OSV)
suse:kernel-obs-qa6.12.0-160000.35.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)
suse:kernel-rt6.12.0-160000.35.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-source6.12.0-160000.35.1 · SUSE:Linux Micro 6.2Package registry (OSV)
suse:kernel-syms6.12.0-160000.35.1 · SUSE:Linux Micro Extras 6.2Package registry (OSV)
suse:kernel-zfcpdump6.12.0-160000.35.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records