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Linux KernelOperating system · Linux

CVE-2026-64231

MEDIUM · 5.5 CVSS v3.1 Published 2026-07-24
Fix available
A fix is available. Upgrade to 6.1.175 / 6.6.142 or later.
See remediation →
57/100
Remediation priority · Elevated
Zero-click 4 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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/

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Linux KernelOperating system
Affected:>= 5.14, < 6.1.175>= 6.2, < 6.6.142>= 6.7, < 6.12.92>= 6.13, < 6.18.34>= 6.19, < 7.0.11= 7.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 6.1.175 / 6.6.142 / 6.12.92 or later
Fixed in 6.1.1756.6.1426.12.92
Recommended fix High confidence

Upgrade to kernel version 6.1.175 or later (for 6.1.y branch), 6.6.142 or later (for 6.6.y branch), 6.12.92 or later (for 6.12.y branch), or 6.18.34 or later (for 6.13+ branches). The latest stable release (6.18.34+) is recommended.

  1. Identify the current running kernel version using `uname -r`
  2. Determine which kernel branch your current version belongs to (6.1.x, 6.6.x, 6.12.x, or 6.13.x+)
  3. For RHEL/CentOS/Fedora systems: Update the kernel package using the system package manager (e.g., `dnf update kernel` or `apt-get update && apt-get install linux-image-generic`)
  4. For Debian/Ubuntu systems: Run `apt-get update && apt-get install linux-image-generic` to install the latest stable kernel
  5. For upstream/vanilla kernels: Download and install the appropriate kernel source from kernel.org, build and install the updated kernel
  6. Reboot the system to load the patched kernel
  7. Verify the fix is applied by checking the kernel version matches or exceeds the fixed release (e.g., `uname -r` should show 6.1.175+, 6.6.142+, 6.12.92+, or 6.18.34+)
Caveat Kernel upgrades may require rebooting and could have compatibility issues with custom drivers or modules. Ensure backups and test in a staging environment before production deployment.

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-64231 in production — separate from our analysis above.

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What this is

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  • Version or environment caveats, and links to real fixes
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