REDHAT-BUG-2327370: Low severity linux kernel vulnerability
In the Linux kernel, the following vulnerability has been resolved:
platform/x86/amd/pmc: Detect when STB is not available
Loading the amdpmc module as:
amdpmc enablestb=1
...can result in the following messages in the kernel ring buffer:
amdpmc AMDI0009:00: SMU cmd failed. err: 0xff ioremap on RAM at 0x0000000000000000 - 0x0000000000ffffff WARNING: CPU: 10 PID: 2151 at arch/x86/mm/ioremap.c:217 ioremapcaller+0x2cd/0x340
Further debugging reveals that this occurs when the requests for S2DPHYSADDRLOW and S2DPHYSADDRHIGH return a value of 0, indicating that the STB is inaccessible. To prevent the ioremap warning and provide clarity to the user, handle the invalid address and display an error message.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2327370?
The severity of REDHAT-BUG-2327370 is classified as moderate.
How do I fix REDHAT-BUG-2327370?
To fix REDHAT-BUG-2327370, update the Linux kernel to the latest available version where the vulnerability is patched.
What systems are affected by REDHAT-BUG-2327370?
REDHAT-BUG-2327370 affects systems running specific versions of the Linux kernel that utilize the amd_pmc module.
What are the symptoms of REDHAT-BUG-2327370?
Symptoms of REDHAT-BUG-2327370 may include kernel ring buffer error messages related to the amd_pmc module.
Is there a workaround for REDHAT-BUG-2327370?
A potential workaround for REDHAT-BUG-2327370 is to avoid loading the amd_pmc module with the enable_stb=1 parameter.