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CVE PROGRAM SOURCE RECORDUnscored

CVE-2021-46940

tools/power turbostat: Fix offset overflow issue in index converting

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Status
Published
Published
Updated
Assigning organization
Linux

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 9972d5d84d76982606806b2ce887f70c2f8ba60a to < ea6803ff2cd1a2d7d880256bf562172b708a76ffaffected
  • 9972d5d84d76982606806b2ce887f70c2f8ba60a to < dbdf22fc825fdb1d97f23230064e0f9819471628affected
  • 9972d5d84d76982606806b2ce887f70c2f8ba60a to < 337b1546cde87fb8588ddaedf0201b769baa572aaffected
  • 9972d5d84d76982606806b2ce887f70c2f8ba60a to < 13a779de4175df602366d129e41782ad7168cef0affected

Linux Linux

Default version status: affected

  • 5.10affected
  • 0 to < 5.10unaffected
  • 5.10.36 to ≤ 5.10.*unaffected
  • 5.11.20 to ≤ 5.11.*unaffected
  • 5.12.3 to ≤ 5.12.*unaffected
  • 5.13 to ≤ *unaffected

References