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CVE-2021-46940

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

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected 9972d5d84d76982606806b2ce887f70c2f8ba60a before ea6803ff2cd1a2d7d880256bf562172b708a76ff; affected 9972d5d84d76982606806b2ce887f70c2f8ba60a before dbdf22fc825fdb1d97f23230064e0f9819471628; affected 9972d5d84d76982606806b2ce887f70c2f8ba60a before 337b1546cde87fb8588ddaedf0201b769baa572a; affected 9972d5d84d76982606806b2ce887f70c2f8ba60a before 13a779de4175df602366d129e41782ad7168cef0
Linux / Linuxaffected 5.10; unaffected 0 before 5.10; unaffected 5.10.36 through 5.10.*; unaffected 5.11.20 through 5.11.*; unaffected 5.12.3 through 5.12.*; unaffected 5.13 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.