CVE-2026-64231

Kernel crash via oversized DSI register dump

Published Jul 24, 2026 · Updated Jul 24, 2026

Out-of-bounds access in Linux Kernel 5.14 and affected later versions allows local users to crash MSM DSI 6G systems during state capture. The msm_dsi_host_snapshot path adds io_offset to the mapped I/O start address but passes the original ctrl_size to msm_disp_snapshot_add_block, extending the register dump beyond the mapping. Reachability requires DSI 6G hardware and local low-privileged access; the documented consequence is an availability-only kernel fault.

CVSS severity5.5
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in Linux Kernel 5.14 and affected later versions allows local users to crash MSM DSI 6G systems during state capture. The msm_dsi_host_snapshot path adds io_offset to the mapped I/O start address but passes the original ctrl_size to msm_disp_snapshot_add_block, extending the register dump beyond the mapping. Reachability requires DSI 6G hardware and local low-privileged access; the documented consequence is an availability-only kernel fault.

The record

CVE
CVE-2026-64231
Published
Jul 24, 2026
Updated
Jul 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.14
  2. Affected versionversion=bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 <567b5e976e2e15280d78c9ef2add1954a0bbb5b1
  3. Affected versionversion=bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 <5b49a46baa853b26dbefa65c6c75dd9ff69f63d4
  4. Affected versionversion=bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 <5e2c196c3430fb94225c4102b1028d0146544761
  5. Affected versionversion=bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 <9f8274749d9010a1a72f97e547b7eb9ebb82345b
  6. Affected versionversion=bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 <a184aec790135938b0fadb415e55accd1f8685a0
  7. Affected versionversion=bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 <ab871d5882953e5574ae2bc47bec88c2e3d22663

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.14; version=bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 <567b5e976e2e15280d78c9ef2add1954a0bbb5b1; version=bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 <5b49a46baa853b26dbefa65c6c75dd9ff69f63d4; version=bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 <5e2c196c3430fb94225c4102b1028d0146544761; version=bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 <9f8274749d9010a1a72f97e547b7eb9ebb82345b; version=bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 <a184aec790135938b0fadb415e55accd1f8685a0; version=bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645 <ab871d5882953e5574ae2bc47bec88c2e3d22663

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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