CVE-2023-53755

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux6fa7e0e836e23e2c758ac3930b040c8abbbf8a6f < 8ae2113702613207efc05453bc9a3df2b992bf45affected
LinuxLinux6fa7e0e836e23e2c758ac3930b040c8abbbf8a6f < 5bba023b1241c7af5d40447503a68de282ad5190affected
LinuxLinux6fa7e0e836e23e2c758ac3930b040c8abbbf8a6f < 928469986171a6f763b34b039427f5667ba3fd50affected
LinuxLinux5.18affected
LinuxLinux0 < 5.18unaffected
LinuxLinux6.1.16 <= 6.1.*unaffected
LinuxLinux6.2.3 <= 6.2.*unaffected
LinuxLinux6.3 <= *unaffected

Weaknesses

References