# CVE-2022-48972: linux: In the Linux kernel, the following vulnerability has been resolved:  mac802154: fix missing INIT_LIST_HEAD in ieee802...

CVE-2022-48972 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48972, released October 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-48972
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0028
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 21, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add()  Kernel fault injection test reports null-ptr-deref as follows:  BUG: kernel NULL pointer dereference, address: 0000000000000008 RIP: 0010:cfg802154_netdev_notifier_call+0x120/0x310 include/linux/list.h:114 Call Trace:  <TASK>  raw_notifier_call_chain+0x6d/0xa0 kernel/notifier.c:87  call_netdevice_notifiers_info+0x6e/0xc0 net/core/dev.c:1944  unregister_netdevice_many_notify+0x60d/0xcb0 net/core/dev.c:1982  unregister_netdevice_queue+0x154/0x1a0 net/core/dev.c:10879  register_netdevice+0x9a8/0xb90 net/core/dev.c:10083  ieee802154_if_add+0x6ed/0x7e0 net/mac802154/iface.c:659  ieee802154_register_hw+0x29c/0x330 net/mac802154/main.c:229  mcr20a_probe+0xaaa/0xcb1 drivers/net/ieee802154/mcr20a.c:1316  ieee802154_if_add() allocates wpan_dev as netdev's private data, but not init the list in struct wpan_dev. cfg802154_netdev_notifier_call() manage the list when device register/unregister, and may lead to null-ptr-deref.  Use INIT_LIST_HEAD() on it to initialize it correctly.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2022-48972](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48972.md) | Oct 21, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2022-48972](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48972.md) | Oct 21, 2024 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2022-48972](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48972.md) | Oct 21, 2024 |

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