Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mwifiex: fix use-after-free in mwifiex_adapter_cleanup()
The mwifiex_adapter_cleanup() function uses timer_delete() (non-synchronous) for the wakeup_timer before the adapter structure is freed. This is incorrect because timer_delete() does not wait for any running timer callback to complete.
If the wakeup_timer callback (wakeup_timer_fn) is executing when mwifiex_adapter_cleanup() is called, the callback will continue to access adapter fields (adapter->hw_status, adapter->if_ops.card_reset, etc.) which may be freed by mwifiex_free_adapter() called later in the mwifiex_remove_card() path.
Use timer_delete_sync() instead to ensure any running timer callback has completed before returning.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 4636187da60b6e33526050235c610409d9cc00e8, < c3508895450cca4aeaf5dbadbb5e582363005264; >= 4636187da60b6e33526050235c610409d9cc00e8, < 1958a92599b2653d730ccb6f5685fc3fbed21812; >= 4636187da60b6e33526050235c610409d9cc00e8, < a88f5391dc68f78cae5eb6a8cd341cafee795d3d; >= 4636187da60b6e33526050235c610409d9cc00e8, < 11869ce402d95519d49b25a2a97741f68d69d103; >= 4636187da60b6e33526050235c610409d9cc00e8, < 63fe3389b3e092d6c0eeea9fc0318e7918b16618; >= 4636187da60b6e33526050235c610409d9cc00e8, < 4e179a60a60c0a5aea245e8e67768343c0f070b8; >= 4636187da60b6e33526050235c610409d9cc00e8, < 030abbae49cf9fd1fba7aa08e15ec81efbeb78cf; >= 4636187da60b6e33526050235c610409d9cc00e8, < ae5e95d4157481693be2317e3ffcd84e36010cbb |
| Linux | Linux | 4.0 |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | < * |
References
- https://git.kernel.org/stable/c/030abbae49cf9fd1fba7aa08e15ec81efbeb78cfPatch
- https://git.kernel.org/stable/c/11869ce402d95519d49b25a2a97741f68d69d103Patch
- https://git.kernel.org/stable/c/1958a92599b2653d730ccb6f5685fc3fbed21812Patch
- https://git.kernel.org/stable/c/4e179a60a60c0a5aea245e8e67768343c0f070b8Patch
- https://git.kernel.org/stable/c/63fe3389b3e092d6c0eeea9fc0318e7918b16618Patch
- https://git.kernel.org/stable/c/a88f5391dc68f78cae5eb6a8cd341cafee795d3dPatch
- https://git.kernel.org/stable/c/ae5e95d4157481693be2317e3ffcd84e36010cbbPatch
- https://git.kernel.org/stable/c/c3508895450cca4aeaf5dbadbb5e582363005264Patch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
Timeline
- Published
- May 27, 2026
- Last modified
- Nov 6, 2026
- NVD status
- Undergoing Analysis