CVE-2022-48972
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:…
Does this matter?
Lower severity and a low EPSS score (0.28%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.28% probability · 21th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1831d4540406708e48239cf38fd9c3b7ea98e08fPatch
- https://git.kernel.org/stable/c/42c319635c0cf7eb36eccac6cda76532f47b61a3Patch
- https://git.kernel.org/stable/c/623918f40fa68e3bb21312a3fafb90f491bf5358Patch
- https://git.kernel.org/stable/c/7410f4d1221bb182510b7778ab6eefa8b9b7102dPatch
- https://git.kernel.org/stable/c/9980a3ea20de40c83817877106c909cb032692d2Patch
- https://git.kernel.org/stable/c/a110287ef4a423980309490df632e1c1e73b3dc9Patch
- https://git.kernel.org/stable/c/b3d72d3135d2ef68296c1ee174436efd65386f04Patch
- https://git.kernel.org/stable/c/f00c84fb1635c27ba24ec5df65d5bd7d7dc00008Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.