CVE-2021-47016
m68k: mvme147,mvme16x: Don't wipe PCC timer config bits
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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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/1dfb26df15fc7036a74221d43de7427f74293dae
- https://git.kernel.org/stable/c/43262178c043032e7c42d00de44c818ba05f9967
- https://git.kernel.org/stable/c/5d34225169346cab5145978d153b9ce90e9ace21
- https://git.kernel.org/stable/c/73fdeb612d25b5e105c219e05434285a45d23576
- https://git.kernel.org/stable/c/f6a90818a32058fca62cda3a2027a6a2364e1878
References (5)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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