Riskcovery

CVE-2021-47016

m68k: mvme147,mvme16x: Don't wipe PCC timer config bits

State
Published
Severity
Not scored
Published
Feb 29, 2024
Updated
May 11, 2026
Reserved
Feb 27, 2024

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 7529b90d051e4629884771ba2b1d3a87d2c6a9d7 to before f6a90818a32058fca62cda3a2027a6a2364e1878Affected
  • 7529b90d051e4629884771ba2b1d3a87d2c6a9d7 to before 1dfb26df15fc7036a74221d43de7427f74293daeAffected
  • 7529b90d051e4629884771ba2b1d3a87d2c6a9d7 to before 73fdeb612d25b5e105c219e05434285a45d23576Affected
  • 7529b90d051e4629884771ba2b1d3a87d2c6a9d7 to before 5d34225169346cab5145978d153b9ce90e9ace21Affected
  • 7529b90d051e4629884771ba2b1d3a87d2c6a9d7 to before 43262178c043032e7c42d00de44c818ba05f9967Affected
LinuxLinux
  • 5.2Affected
  • before 5.2Not affected
  • 5.4.119 through 5.4.*Not affected
  • 5.10.37 through 5.10.*Not affected
  • 5.11.21 through 5.11.*Not affected
  • 5.12.4 through 5.12.*Not affected
  • 5.13 and laterNot affected

References

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