CVE-2026-90380
8.8 · HIGHIn 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…
Overview
CVE-2026-90380 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical description
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
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
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Frequently asked questions
What is CVE-2026-90380?
CVE-2026-90380 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2026-90380?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-90380?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-90380?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-90380 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.
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