Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix warning when unbinding If there is an error during some initialization related to firmware, the buffers dp->tx_ring[i].tx_status are released. However this is released again when the device is unbinded (ath11k_pci), and we get: WARNING: CPU: 0 PID: 6231 at mm/slub.c:4368 free_large_kmalloc+0x57/0x90 Call Trace: free_large_kmalloc ath11k_dp_free ath11k_core_deinit ath11k_pci_remove ... The issue is always reproducible from a VM because the MSI addressing initialization is failing. In order to fix the issue, just set the buffers to NULL after releasing in order to avoid the double free.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/051f954b94479d72222c9fbc82a3eef4777bca01 Patch
- git.kernel.org/stable/c/0a946abb82f29abe9a15173b707a449cb039b43e Patch
- git.kernel.org/stable/c/0aa097a370277deab5337030b9e2d395742f469c Patch
- git.kernel.org/stable/c/318703b6f71d1a29ee0ac46c32a38f7734d4cfb2 Patch
- git.kernel.org/stable/c/40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a Patch
- git.kernel.org/stable/c/7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13 Patch
- git.kernel.org/stable/c/8b7a26b6681922a38cd5a7829ace61f8e54df9b7 Patch
- git.kernel.org/stable/c/e569a5cb401a267168621aa9a1e7f07fcc9612c3 Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 14 November 2026
- CWE
- CWE-415
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