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nvd416baaa9-dc9f-4396-8d5f-8c081fb06d67NVD:CVE-2021-47016
HistoryFeb 29, 2024 - 11:15 p.m.

CVE-2021-47016

2024-02-2923:15:07
416baaa9-dc9f-4396-8d5f-8c081fb06d67
web.nvd.nist.gov
linux kernel
vulnerability
mvme147
mvme16x
timer configuration
interrupt
counter overflow
mvme16x
initialization
calibrate_delay
jiffies
cve

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.7%

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.

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.7%