CVE-2026-80941: wifi: rtw88: Fix potential memory leak in rtw_txq_push_skb()

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-11 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: Fix potential memory leak in rtw_txq_push_skb() The skb passed to the rtw_hci_tx_write() is expected to be freed when the function fails, but the error path in rtw_txq_push_skb() does not free the skb before returning. This can lead to a memory leak in rtw_txq_push() where a dequeued skb is passed to rtw_txq_push_skb().

Affected products

Linux kernel: 5.7 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/51d8b35574721cf3fe744f46ebd9629916063fee
https://git.kernel.org/stable/c/68676ce3313b74326fbcf21c673728db4c19d3cf
https://git.kernel.org/stable/c/6e95852f904edbabf411793093fcfd6f6d49ef27
https://git.kernel.org/stable/c/7364713f0931ee45fdf0bea27103b40ccc94979a
https://git.kernel.org/stable/c/924e75a420a3000e9f189aed26f67556a62f2d57
https://git.kernel.org/stable/c/9f2948010764d708bda27369d09ce6f194abe8e3
https://git.kernel.org/stable/c/c86199357a93b9182854cf805d7780a213fda937
https://git.kernel.org/stable/c/e8fd57157ee7a9e2986a9218198a5c1b02f2310b

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