Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ieee802154/adf7242: defer destroy_workqueue call There is a possible race condition (use-after-free) like below (FREE) | (USE) adf7242_remove | adf7242_channel cancel_delayed_work_sync | destroy_workqueue (1) | adf7242_cmd_rx | mod_delayed_work (2) | The root cause for this race is that the upper layer (ieee802154) is unaware of this detaching event and the function adf7242_channel can be called without any checks. To fix this, we can add a flag write at the beginning of adf7242_remove and add flag check in adf7242_channel. Or we can just defer the destructive operation like other commit 3e0588c291d6 ("hamradio: defer ax25 kfree after unregister_netdev") which let the ieee802154_unregister_hw() to handle the synchronization. This patch takes the second option. runs")
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 58e9683d14752debc6f22daf6b23e031787df31f before dede80aaf01f4b6e8657d23726cb4a3da226ec4c; affected 58e9683d14752debc6f22daf6b23e031787df31f before bed12d7531df1417fc92c691999ff95e03835008; affected 58e9683d14752debc6f22daf6b23e031787df31f before 23a29932715ca43bceb2eae1bdb770995afe7271; affected 58e9683d14752debc6f22daf6b23e031787df31f before 9f8558c5c642c62c450c98c99b7d18a709fff485; affected 58e9683d14752debc6f22daf6b23e031787df31f before 15f3b89bd521d5770d36a61fc04a77c293138ba6; affected 58e9683d14752debc6f22daf6b23e031787df31f before afe7116f6d3b888778ed6d95e3cf724767b9aedf; affected a2363e2d88bf50022ee643c49ee5d4f7e8c915ea; affected 4.17.19 before 4.18 |
| Linux / Linux | affected 4.18; unaffected 0 before 4.18; unaffected 4.19.258 through 4.19.*; unaffected 5.4.213 through 5.4.*; unaffected 5.10.142 through 5.10.*; unaffected 5.15.66 through 5.15.*; unaffected 5.19.8 through 5.19.*; unaffected 6.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/dede80aaf01f4b6e8657d23726cb4a3da226ec4c
- https://git.kernel.org/stable/c/bed12d7531df1417fc92c691999ff95e03835008
- https://git.kernel.org/stable/c/23a29932715ca43bceb2eae1bdb770995afe7271
- https://git.kernel.org/stable/c/9f8558c5c642c62c450c98c99b7d18a709fff485
- https://git.kernel.org/stable/c/15f3b89bd521d5770d36a61fc04a77c293138ba6
- https://git.kernel.org/stable/c/afe7116f6d3b888778ed6d95e3cf724767b9aedf