CVE-2021-46940
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…
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.22% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/13a779de4175df602366d129e41782ad7168cef0Patch
- https://git.kernel.org/stable/c/337b1546cde87fb8588ddaedf0201b769baa572aPatch
- https://git.kernel.org/stable/c/dbdf22fc825fdb1d97f23230064e0f9819471628Patch
- https://git.kernel.org/stable/c/ea6803ff2cd1a2d7d880256bf562172b708a76ffPatch
- https://git.kernel.org/stable/c/13a779de4175df602366d129e41782ad7168cef0Patch
- https://git.kernel.org/stable/c/337b1546cde87fb8588ddaedf0201b769baa572aPatch
- https://git.kernel.org/stable/c/dbdf22fc825fdb1d97f23230064e0f9819471628Patch
- https://git.kernel.org/stable/c/ea6803ff2cd1a2d7d880256bf562172b708a76ffPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.