CVE-2021-46940
tools/power turbostat: Fix offset overflow issue in index converting
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: herramientas/turbostat de potencia: soluciona el problema de desbordamiento de compensación en la conversión de índice. La función idx_to_offset() devuelve el tipo int (32 bits firmado), pero MSR_PKG_ENERGY_STAT es u32 y se interpretaría como negativo. número. El resultado final es que alcanza la verificación if (offset < 0) en update_msr_sum(), lo que evita que la devolución de llamada del temporizador actualice la estadística en segundo plano cuando se utilizan duraciones prolongadas. Existe un problema similar en offset_to_idx() y update_msr_sum(). Solucione este problema convirtiendo 'int' a 'off_t' en consecuencia.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-25 CVE Reserved
- 2024-02-27 CVE Published
- 2024-04-21 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-190: Integer Overflow or Wraparound
CAPEC
References (5)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/9972d5d84d76982606806b2ce887f70c2f8ba60a | Vuln. Introduced |
| URL | Date | SRC |
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| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10 < 5.10.36 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10 < 5.10.36" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10 < 5.11.20 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10 < 5.11.20" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10 < 5.12.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10 < 5.12.3" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10 < 5.13 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10 < 5.13" | en |
Affected
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