# CVE-2026-64231: CVE-2026-64231

Status: published. Published: 2026-07-24. Updated: 2026-11-08.

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/

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/567b5e976e2e15280d78c9ef2add1954a0bbb5b1
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/5b49a46baa853b26dbefa65c6c75dd9ff69f63d4
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/5e2c196c3430fb94225c4102b1028d0146544761
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/9f8274749d9010a1a72f97e547b7eb9ebb82345b
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/a184aec790135938b0fadb415e55accd1f8685a0
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/ab871d5882953e5574ae2bc47bec88c2e3d22663

## Affected products and versions

- linux / linux_kernel: ≥ 5.14; < 6.1.175 (affected, custom). Source: NVD
- linux / linux_kernel: ≥ 6.2; < 6.6.142 (affected, custom). Source: NVD
- linux / linux_kernel: ≥ 6.7; < 6.12.92 (affected, custom). Source: NVD
- linux / linux_kernel: ≥ 6.13; < 6.18.34 (affected, custom). Source: NVD
- linux / linux_kernel: ≥ 6.19; < 7.0.11 (affected, custom). Source: NVD
- linux / linux_kernel: 7.1 (affected, custom). Source: NVD

## NVD configuration conditions

Affected CPE matches depend on the following AND/OR and negation conditions:

```json
[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "6.1.175",
            "versionStartIncluding": "5.14",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "6.6.142",
            "versionStartIncluding": "6.2",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "6.12.92",
            "versionStartIncluding": "6.7",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "6.18.34",
            "versionStartIncluding": "6.13",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "7.0.11",
            "versionStartIncluding": "6.19",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]
```

## Severity and prioritization

- CVSS 3.1: 5.5 (medium); CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H; source: NVD: nvd@nist.gov

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/567b5e976e2e15280d78c9ef2add1954a0bbb5b1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch)

- https://git.kernel.org/stable/c/5b49a46baa853b26dbefa65c6c75dd9ff69f63d4 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch)

- https://git.kernel.org/stable/c/5e2c196c3430fb94225c4102b1028d0146544761 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch)

- https://git.kernel.org/stable/c/9f8274749d9010a1a72f97e547b7eb9ebb82345b (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch)

- https://git.kernel.org/stable/c/a184aec790135938b0fadb415e55accd1f8685a0 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch)

- https://git.kernel.org/stable/c/ab871d5882953e5574ae2bc47bec88c2e3d22663 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch)

## Provenance

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-64231; retrieved 2026-11-09; source updated 2026-11-08

Revision: 44f9022d37c5343c187195d1e3bf535cfc02f3438dec69dd2c12b12ee1c66868

Canonical: https://y2.dev/cve/CVE-2026-64231

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