CVE-2021-47016
m68k: mvme147,mvme16x: Don't wipe PCC timer config bits
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
m68k: mvme147,mvme16x: Don't wipe PCC timer config bits
Don't clear the timer 1 configuration bits when clearing the interrupt flag
and counter overflow. As Michael reported, "This results in no timer
interrupts being delivered after the first. Initialization then hangs
in calibrate_delay as the jiffies counter is not updated."
On mvme16x, enable the timer after requesting the irq, consistent with
mvme147.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: m68k: mvme147,mvme16x: No borre los bits de configuración del temporizador PCC. No borre los bits de configuración del temporizador 1 al borrar el indicador de interrupción y el desbordamiento del contador. Como informó Michael, "Esto da como resultado que no se entreguen interrupciones del temporizador después de la primera. Luego, la inicialización se bloquea en calibrate_delay porque el contador de santiamén no se actualiza". En mvme16x, habilite el temporizador después de solicitar irq, de acuerdo con mvme147.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-27 CVE Reserved
- 2024-02-29 CVE Published
- 2024-03-01 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (6)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/7529b90d051e4629884771ba2b1d3a87d2c6a9d7 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
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" | >= 5.2 < 5.4.119 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.4.119" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 5.10.37 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.10.37" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 5.11.21 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.11.21" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 5.12.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.12.4" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 5.13 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.13" | en |
Affected
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