# CVE-2021-47159: linux: In the Linux kernel, the following vulnerability has been resolved:  net: dsa: fix a crash if ->get_sset_count() fail...

CVE-2021-47159 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47159, released March 25, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-47159
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0025
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 25, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  net: dsa: fix a crash if ->get_sset_count() fails  If ds->ops->get_sset_count() fails then it "count" is a negative error code such as -EOPNOTSUPP.  Because "i" is an unsigned int, the negative error code is type promoted to a very high value and the loop will corrupt memory until the system crashes.  Fix this by checking for error codes and changing the type of "i" to just int.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.14.6-1 | [DEBIAN-CVE-2021-47159](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47159.md) | Mar 25, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.14.6-1 | [DEBIAN-CVE-2021-47159](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47159.md) | Mar 25, 2024 |
| Linux | linux Debian 14 | 5.14.6-1 | [DEBIAN-CVE-2021-47159](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47159.md) | Mar 25, 2024 |

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