title: tools/power turbostat: Fix offset overflow issue in index converting
description: In the Linux kernel, the following vulnerability has been resolved:
tools/power turbostat: Fix offset overflow issue in index converting
The idx_to_offset() function returns type int (32-bit signed), but
MSR_PKG_ENERGY_STAT is u32 and would be interpreted as a negative number.
The end result is that it hits the if (offset < 0) check in update_msr_sum()
which prevents the timer callback from updating the stat in the background when
long durations are used. The similar issue exists in offset_to_idx() and
update_msr_sum(). Fix this issue by converting the 'int' to 'off_t' accordingly.
affected:
{
product: Linux
vendor: Linux
defaultStatus: unaffected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions:
version: 9972d5d84d76, lessThan: ea6803ff2cd1, status: affected, versionType: git
version: 9972d5d84d76, lessThan: dbdf22fc825f, status: affected, versionType: git
version: 9972d5d84d76, lessThan: 337b1546cde8, status: affected, versionType: git
version: 9972d5d84d76, lessThan: 13a779de4175, status: affected, versionType: git
}
{
product: Linux
vendor: Linux
defaultStatus: affected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions:
version: 5.10, status: affected
version: 0, lessThan: 5.10, status: unaffected, versionType: custom
version: 5.10.36, lessThanOrEqual: 5.10.*, status: unaffected, versionType: custom
version: 5.11.20, lessThanOrEqual: 5.11.*, status: unaffected, versionType: custom
version: 5.12.3, lessThanOrEqual: 5.12.*, status: unaffected, versionType: custom
version: 5.13, lessThanOrEqual: *, status: unaffected, versionType: original_commit_for_fix
}
