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CVE-2026-93068

drm/amd/display: Fix DM I2C teardown race

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix DM I2C teardown race DM I2C adapters can remain visible to userspace while DM teardown is already in progress. A concurrent i2c-dev transfer may then enter amdgpu_dm_i2c_xfer() after the backing DM state has been torn down, leading to a NULL pointer dereference. Create a devres group around the DM I2C adapter lifetime and release it at the start of dm_hw_fini(), before HPD, IRQ, and DM state are torn down. This removes the I2C adapters first and waits for in-flight users to drain before the structures used by amdgpu_dm_i2c_xfer() disappear. This fixes a teardown ordering race seen during device removal: BUG: kernel NULL pointer dereference RIP: amdgpu_dm_i2c_xfer+0x122/0x1c0 [amdgpu] Call Trace: __i2c_transfer i2c_transfer i2cdev_ioctl_rdwr

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 32 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.

EPSS (exploitation in 30 days)
0.21% · top 89% of all CVEs (11 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.

Affected products

  • Linux · Linux

    • affected 5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 – < 8ee385305e8902fa6fbfd66b5a112238292567b6
    • affected 5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 – < 6970ec944567f109ac4240f9aea58158ee8a18cd
    • affected 5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 – < e4ae30a12aa95942814957d8bc1ce7366a7107d7

  • Linux · Linux

    • affected 6.18
    • unaffected < 6.18
    • unaffected 6.18.52 – ≤ 6.18.*
    • unaffected 7.2.6 – ≤ 7.2.*
    • unaffected 7.3 – ≤ *

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .