CVE-2026-64231 (GCVE-0-2026-64231)

Vulnerability from cvelistv5 – Published: 2026-07-24 15:23 – Updated: 2026-07-24 15:23
VLAI
Title
drm/msm/dsi: don't dump registers past the mapped region
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/
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 , < 5e2c196c3430fb94225c4102b1028d0146544761 (git)
Affected: bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 , < 567b5e976e2e15280d78c9ef2add1954a0bbb5b1 (git)
Affected: bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 , < 9f8274749d9010a1a72f97e547b7eb9ebb82345b (git)
Affected: bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 , < a184aec790135938b0fadb415e55accd1f8685a0 (git)
Affected: bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 , < ab871d5882953e5574ae2bc47bec88c2e3d22663 (git)
Affected: bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 , < 5b49a46baa853b26dbefa65c6c75dd9ff69f63d4 (git)
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Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.142 , ≤ 6.6.* (semver)
Unaffected: 6.12.92 , ≤ 6.12.* (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm/dsi: don\u0027t dump registers past the mapped region\n\nOn DSI 6G platforms the IO address space is internally adjusted by\nio_offset. Later this adjusted address might be used for memory dumping.\nHowever the size that is used for memory dumping isn\u0027t adjusted to\naccount for the io_offset, leading to the potential access to the\nunmapped region. Lower ctrl_size by the io_offset value to prevent\naccess past the mapped area.\n\n msm_disp_snapshot_add_block+0x1d4/0x3c8 [msm] (P)\n msm_dsi_host_snapshot+0x4c/0x78 [msm]\n msm_dsi_snapshot+0x28/0x50 [msm]\n msm_disp_snapshot_capture_state+0x74/0x140 [msm]\n msm_disp_snapshot_state_sync+0x60/0x90 [msm]\n _msm_disp_snapshot_work+0x30/0x90 [msm]\n kthread_worker_fn+0xdc/0x460\n kthread+0x120/0x140\n\nPatchwork: https://patchwork.freedesktop.org/patch/721747/"
        }
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      "providerMetadata": {
        "dateUpdated": "2026-07-24T15:23:13.175Z",
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    "datePublished": "2026-07-24T15:23:13.175Z",
    "dateReserved": "2026-07-19T15:36:31.771Z",
    "dateUpdated": "2026-07-24T15:23:13.175Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-28T12:35:30+00:00",
      "cve": "CVE-2026-64231",
      "id": "CVE-2026-64231",
      "initial_release_date": "2026-07-24T00:00:00+00:00",
      "product_status:known_affected": "3",
      "product_status:known_not_affected": "275",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/msm/dsi: don\u0027t dump registers past the mapped region",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64231.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-28T17:08:50Z",
      "cve": "CVE-2026-64231",
      "id": "CVE-2026-64231",
      "initial_release_date": "2026-07-25T00:14:03Z",
      "product_status:known_affected": "118",
      "product_status:known_not_affected": "180",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64231",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64231.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.