Riskcovery

CVE-2023-53755

dmaengine: ptdma: check for null desc before calling pt_cmd_callback

State
Published
Severity
Not scored
Published
Dec 8, 2025
Updated
May 11, 2026
Reserved
Dec 8, 2025

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: ptdma: check for null desc before calling pt_cmd_callback

Resolves a panic that can occur on AMD systems, typically during host shutdown, after the PTDMA driver had been exercised. The issue was the pt_issue_pending() function is mistakenly assuming that there will be at least one descriptor in the Submitted queue when the function is called. However, it is possible that both the Submitted and Issued queues could be empty, which could result in pt_cmd_callback() being mistakenly called with a NULL pointer. Ref: Bugzilla Bug 216856.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 6fa7e0e836e23e2c758ac3930b040c8abbbf8a6f to before 8ae2113702613207efc05453bc9a3df2b992bf45Affected
  • 6fa7e0e836e23e2c758ac3930b040c8abbbf8a6f to before 5bba023b1241c7af5d40447503a68de282ad5190Affected
  • 6fa7e0e836e23e2c758ac3930b040c8abbbf8a6f to before 928469986171a6f763b34b039427f5667ba3fd50Affected
LinuxLinux
  • 5.18Affected
  • before 5.18Not affected
  • 6.1.16 through 6.1.*Not affected
  • 6.2.3 through 6.2.*Not affected
  • 6.3 and laterNot affected

References

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