CVE-2026-64231

Summary

In the Linux kernel, the following vulnerability has been resolved:

drm/msm/dsi: don't dump registers past the mapped region

On DSI 6G platforms the IO address space is internally adjusted by io_offset. Later this adjusted address might be used for memory dumping. However the size that is used for memory dumping isn't adjusted to account for the io_offset, leading to the potential access to the unmapped region. Lower ctrl_size by the io_offset value to prevent access past the mapped area.

msm_disp_snapshot_add_block+0x1d4/0x3c8 [msm] (P) msm_dsi_host_snapshot+0x4c/0x78 [msm] msm_dsi_snapshot+0x28/0x50 [msm] msm_disp_snapshot_capture_state+0x74/0x140 [msm] msm_disp_snapshot_state_sync+0x60/0x90 [msm] _msm_disp_snapshot_work+0x30/0x90 [msm] kthread_worker_fn+0xdc/0x460 kthread+0x120/0x140

Patchwork: https://patchwork.freedesktop.org/patch/721747/

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/5e2c196c3430fb94225c4102b1028d0146544761
• https://git.kernel.org/stable/c/567b5e976e2e15280d78c9ef2add1954a0bbb5b1
• https://git.kernel.org/stable/c/9f8274749d9010a1a72f97e547b7eb9ebb82345b
• https://git.kernel.org/stable/c/a184aec790135938b0fadb415e55accd1f8685a0
• https://git.kernel.org/stable/c/ab871d5882953e5574ae2bc47bec88c2e3d22663
• https://git.kernel.org/stable/c/5b49a46baa853b26dbefa65c6c75dd9ff69f63d4

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