Bluetooth: MGMT: fix crash in set_mesh_sync and set_mesh_complete
CVE-2025-40213 · published 24 Nov 2025
How serious is it
- Severity: high, CVSS score 7.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2025-40213?
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Who is affected
- Linux Linux: 0b60eb04b8524e1b4b3f07fea0d16fda9a677d9a to < 31d6c9216aa1be18ba317239738f73b0b0c7b691, d71b98f253b079cbadc83266383f26fe7e9e103b to < 5c19daa93d9af29f1f46251b47e1ea66bcc8d679, 302a1f674c00dd5581ab8e493ef44767c5101aab to < 1c9aca1787e8395a2c59fef20e914467958969c5, 302a1f674c00dd5581ab8e493ef44767c5101aab to < e8785404de06a69d89dcdd1e9a0b6ea42dc6d327
- Linux Linux: 6.17
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: MGMT: fix crash in set_mesh_sync and set_mesh_complete
There is a BUG: KASAN: stack-out-of-bounds in set_mesh_sync due to
memcpy from badly declared on-stack flexible array.
Another crash is in set_mesh_complete() due to double list_del via
mgmt_pending_valid + mgmt_pending_remove.
Use DEFINE_FLEX to declare the flexible array right, and don't memcpy
outside bounds.
As mgmt_pending_valid removes the cmd from list, use mgmt_pending_free,
and also report status on error.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/31d6c9216aa1be18ba317239738f73b0b0c7b691
- git.kernel.org/stable/c/5c19daa93d9af29f1f46251b47e1ea66bcc8d679
- git.kernel.org/stable/c/1c9aca1787e8395a2c59fef20e914467958969c5
- git.kernel.org/stable/c/e8785404de06a69d89dcdd1e9a0b6ea42dc6d327
Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON