fkie_cve-2025-68184
Vulnerability from fkie_nvd
Published
2025-12-16 14:15
Modified
2025-12-18 15:08
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Disable AFBC support on Mediatek DRM driver Commit c410fa9b07c3 ("drm/mediatek: Add AFBC support to Mediatek DRM driver") added AFBC support to Mediatek DRM and enabled the 32x8/split/sparse modifier. However, this is currently broken on Mediatek MT8188 (Genio 700 EVK platform); tested using upstream Kernel and Mesa (v25.2.1), AFBC is used by default since Mesa v25.0. Kernel trace reports vblank timeouts constantly, and the render is garbled: ``` [CRTC:62:crtc-0] vblank wait timed out WARNING: CPU: 7 PID: 70 at drivers/gpu/drm/drm_atomic_helper.c:1835 drm_atomic_helper_wait_for_vblanks.part.0+0x24c/0x27c [...] Hardware name: MediaTek Genio-700 EVK (DT) Workqueue: events_unbound commit_work pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_atomic_helper_wait_for_vblanks.part.0+0x24c/0x27c lr : drm_atomic_helper_wait_for_vblanks.part.0+0x24c/0x27c sp : ffff80008337bca0 x29: ffff80008337bcd0 x28: 0000000000000061 x27: 0000000000000000 x26: 0000000000000001 x25: 0000000000000000 x24: ffff0000c9dcc000 x23: 0000000000000001 x22: 0000000000000000 x21: ffff0000c66f2f80 x20: ffff0000c0d7d880 x19: 0000000000000000 x18: 000000000000000a x17: 000000040044ffff x16: 005000f2b5503510 x15: 0000000000000000 x14: 0000000000000000 x13: 74756f2064656d69 x12: 742074696177206b x11: 0000000000000058 x10: 0000000000000018 x9 : ffff800082396a70 x8 : 0000000000057fa8 x7 : 0000000000000cce x6 : ffff8000823eea70 x5 : ffff0001fef5f408 x4 : ffff80017ccee000 x3 : ffff0000c12cb480 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000c12cb480 Call trace: drm_atomic_helper_wait_for_vblanks.part.0+0x24c/0x27c (P) drm_atomic_helper_commit_tail_rpm+0x64/0x80 commit_tail+0xa4/0x1a4 commit_work+0x14/0x20 process_one_work+0x150/0x290 worker_thread+0x2d0/0x3ec kthread+0x12c/0x210 ret_from_fork+0x10/0x20 ---[ end trace 0000000000000000 ]--- ``` Until this gets fixed upstream, disable AFBC support on this platform, as it's currently broken with upstream Mesa.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0eaa0a3dfe218c4cf1a0782ccbbc9e3931718f17
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/72223700b620885d556a4c52a63f5294316176c6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9882a40640036d5bbc590426a78981526d4f2345
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/df1ad5de2197ea1b527d13ae7b699e9ee7d724d4
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/mediatek: Disable AFBC support on Mediatek DRM driver\n\nCommit c410fa9b07c3 (\"drm/mediatek: Add AFBC support to Mediatek DRM\ndriver\") added AFBC support to Mediatek DRM and enabled the\n32x8/split/sparse modifier.\n\nHowever, this is currently broken on Mediatek MT8188 (Genio 700 EVK\nplatform); tested using upstream Kernel and Mesa (v25.2.1), AFBC is used by\ndefault since Mesa v25.0.\n\nKernel trace reports vblank timeouts constantly, and the render is garbled:\n\n```\n[CRTC:62:crtc-0] vblank wait timed out\nWARNING: CPU: 7 PID: 70 at drivers/gpu/drm/drm_atomic_helper.c:1835 drm_atomic_helper_wait_for_vblanks.part.0+0x24c/0x27c\n[...]\nHardware name: MediaTek Genio-700 EVK (DT)\nWorkqueue: events_unbound commit_work\npstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : drm_atomic_helper_wait_for_vblanks.part.0+0x24c/0x27c\nlr : drm_atomic_helper_wait_for_vblanks.part.0+0x24c/0x27c\nsp : ffff80008337bca0\nx29: ffff80008337bcd0 x28: 0000000000000061 x27: 0000000000000000\nx26: 0000000000000001 x25: 0000000000000000 x24: ffff0000c9dcc000\nx23: 0000000000000001 x22: 0000000000000000 x21: ffff0000c66f2f80\nx20: ffff0000c0d7d880 x19: 0000000000000000 x18: 000000000000000a\nx17: 000000040044ffff x16: 005000f2b5503510 x15: 0000000000000000\nx14: 0000000000000000 x13: 74756f2064656d69 x12: 742074696177206b\nx11: 0000000000000058 x10: 0000000000000018 x9 : ffff800082396a70\nx8 : 0000000000057fa8 x7 : 0000000000000cce x6 : ffff8000823eea70\nx5 : ffff0001fef5f408 x4 : ffff80017ccee000 x3 : ffff0000c12cb480\nx2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000c12cb480\nCall trace:\n drm_atomic_helper_wait_for_vblanks.part.0+0x24c/0x27c (P)\n drm_atomic_helper_commit_tail_rpm+0x64/0x80\n commit_tail+0xa4/0x1a4\n commit_work+0x14/0x20\n process_one_work+0x150/0x290\n worker_thread+0x2d0/0x3ec\n kthread+0x12c/0x210\n ret_from_fork+0x10/0x20\n---[ end trace 0000000000000000 ]---\n```\n\nUntil this gets fixed upstream, disable AFBC support on this platform, as\nit\u0027s currently broken with upstream Mesa."
    }
  ],
  "id": "CVE-2025-68184",
  "lastModified": "2025-12-18T15:08:25.907",
  "metrics": {},
  "published": "2025-12-16T14:15:50.997",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0eaa0a3dfe218c4cf1a0782ccbbc9e3931718f17"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/72223700b620885d556a4c52a63f5294316176c6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9882a40640036d5bbc590426a78981526d4f2345"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/df1ad5de2197ea1b527d13ae7b699e9ee7d724d4"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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