High 8.8Published Sep 17, 2026

CVE-2026-90380wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete

Updated under an hour ago (2026-10-19 08:00 UTC)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete A use-after-free issue occurs in mt76_rx_poll_complete due to a race condition. The STA has already been removed, but the rx_status still had a pointer to the wcid in the STA. Set the links' wcid pointers to be NULL for a MLD in mt7925_sta_pre_rcu_remove() BUG: KASAN: invalid-access in mt76_rx_poll_complete+0x280/0x470 Call trace: dump_backtrace+0xec/0x128 show_stack+0x18/0x28 dump_stack_lvl+0x40/0xc8 print_report+0x1b8/0x710 kasan_report+0xe0/0x144 do_bad_area+0x120/0x260 do_tag_check_fault+0x20/0x34 do_mem_abort+0x54/0xa8 el1_abort+0x3c/0x5c el1h_64_sync_handler+0x40/0xcc el1h_64_sync+0x7c/0x80 mt76_rx_poll_complete+0x280/0x470 mt76_dma_rx_poll+0x114/0x51c mt792x_poll_rx+0x60/0xf8 napi_threaded_poll_loop+0xe0/0x450 napi_threaded_poll+0x80/0x9c kthread+0x11c/0x158 ret_from_fork+0x10/0x20

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c948b5da6bbec742b433138e3e3f9537a85af2e5 before aaf414bf81ab4b680580871784b0b929818188eb; from c948b5da6bbec742b433138e3e3f9537a85af2e5 before 2aa3d3b9fac9163e9226e35556607ae3f75be21e; from c948b5da6bbec742b433138e3e3f9537a85af2e5 before b250943f3f8351385a17972bda001664a5c51008; from c948b5da6bbec742b433138e3e3f9537a85af2e5 before 217f9e7bb02558759be9d9ecfe532e9708741c50	CNA record

References

https://git.kernel.org/stable/c/aaf414bf81ab4b680580871784b0b929818188eb
https://git.kernel.org/stable/c/2aa3d3b9fac9163e9226e35556607ae3f75be21e
https://git.kernel.org/stable/c/b250943f3f8351385a17972bda001664a5c51008
https://git.kernel.org/stable/c/217f9e7bb02558759be9d9ecfe532e9708741c50

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.