# CVE-2021-47016: linux: In the Linux kernel, the following vulnerability has been resolved:  m68k: mvme147,mvme16x: Don't wipe PCC timer conf...

CVE-2021-47016 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47016, released February 29, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-47016
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0022
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 29, 2024

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.10.38-1 | [DEBIAN-CVE-2021-47016](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47016.md) | Feb 29, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.10.38-1 | [DEBIAN-CVE-2021-47016](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47016.md) | Feb 29, 2024 |
| Linux | linux Debian 14 | 5.10.38-1 | [DEBIAN-CVE-2021-47016](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47016.md) | Feb 29, 2024 |

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