CVE-2026-68252

Local kernel panic via misaligned user fence

Published Aug 10, 2026 · Updated Aug 10, 2026

Reachable assertion in Linux 6.11 through 7.2-rc1 allows local users to panic the kernel via a crafted AMDGPU command submission. The AMDGPU CS path accepts a misaligned user-fence offset and passes its address to BUG_ON in sdma_v7_0_ring_emit_fence, terminating the kernel. Exploitation requires access to an AMDGPU render node on SDMA 7.0 hardware and causes a crash or, with panic-on-oops enabled, a hard hang.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reachable assertion in Linux 6.11 through 7.2-rc1 allows local users to panic the kernel via a crafted AMDGPU command submission. The AMDGPU CS path accepts a misaligned user-fence offset and passes its address to BUG_ON in sdma_v7_0_ring_emit_fence, terminating the kernel. Exploitation requires access to an AMDGPU render node on SDMA 7.0 hardware and causes a crash or, with panic-on-oops enabled, a hard hang.

The record

CVE
CVE-2026-68252
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-248, T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=0 <6.12.101
  2. Affected versionversion=0 <6.18.42
  3. Affected versionversion=0 <7.1.6
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <395bf099ef7153227600a2d8cb087f45c4a277b6
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4c09483325360373656214cc7a2fd29dc73037a5
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bcbd53d25da879bbce75faad9888c9a56e942fec
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e80e28f398f5d9f6e361ffb56382d2e74fc87556

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=0 <6.12.101; version=0 <6.18.42; version=0 <7.1.6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <395bf099ef7153227600a2d8cb087f45c4a277b6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4c09483325360373656214cc7a2fd29dc73037a5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bcbd53d25da879bbce75faad9888c9a56e942fec; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e80e28f398f5d9f6e361ffb56382d2e74fc87556

Published CVSS scores

5.5OracleCVSS: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

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-248Uncaught Exception
T1499.004Application or System Exploitation

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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