cbcvebase.
CVE-2022-49876
published 2025-05-01

CVE-2022-49876: In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix general-protection-fault in ieee80211_subif_start_xmit() When device is…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.16%
5.6th percentile
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix general-protection-fault in ieee80211_subif_start_xmit() When device is running and the interface status is changed, the gpf issue is triggered. The problem triggering process is as follows: Thread A: Thread B ieee80211_runtime_change_iftype() process_one_work() ... ... ieee80211_do_stop() ... ... ... sdata->bss = NULL ... ... ieee80211_subif_start_xmit() ieee80211_multicast_to_unicast //!sdata->bss->multicast_to_unicast cause gpf issue When the interface status is changed, the sending queue continues to send packets. After the bss is set to NULL, the bss is accessed. As a result, this causes a general-protection-fault issue. The following is the stack information: general protection fault, probably for non-canonical address 0xdffffc000000002f: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000178-0x000000000000017f] Workqueue: mld mld_ifc_work RIP: 0010:ieee80211_subif_start_xmit+0x25b/0x1310 Call Trace: dev_hard_start_xmit+0x1be/0x990 __dev_queue_xmit+0x2c9a/0x3b60 ip6_finish_output2+0xf92/0x1520 ip6_finish_output+0x6af/0x11e0 ip6_output+0x1ed/0x540 mld_sendpack+0xa09/0xe70 mld_ifc_work+0x71c/0xdb0 process_one_work+0x9bf/0x1710 worker_thread+0x665/0x1080 kthread+0x2e4/0x3a0 ret_from_fork+0x1f/0x30

Affected

9 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.0.10-1 (bookworm)linux 6.0.10-1 (bookworm)
linuxlinux——
linuxlinux>= f856373e2f31ffd340e47e2b00027bd4070f74b3 < 03eb68c72cee249aeb7af7d04a83c033aca3d6d903eb68c72cee249aeb7af7d04a83c033aca3d6d9
linuxlinux>= f856373e2f31ffd340e47e2b00027bd4070f74b3 < 780854186946e0de2be192ee7fa5125666533b3a780854186946e0de2be192ee7fa5125666533b3a
linuxlinux_kernel——
linuxlinux_kernel>= 0 < 6.0.10-16.0.10-1
linuxlinux_kernel>= 0 < 6.0.10-16.0.10-1
linuxlinux_kernel>= 0 < 6.0.10-16.0.10-1
linuxlinux_kernel>= 5.19 < 6.0.96.0.9

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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