CVE-2026-63822
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.
How to fix
- Linux Linuxe569a5cb401a267168621aa9a1e7f07fcc9612c3, 0aa097a370277deab5337030b9e2d395742f469c, 0a946abb82f29abe9a15173b707a449cb039b43e, 318703b6f71d1a29ee0ac46c32a38f7734d4cfb2, 7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13, 40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a, 051f954b94479d72222c9fbc82a3eef4777bca01, 8b7a26b6681922a38cd5a7829ace61f8e54df9b7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | d5c65159f2895379e11ca13f62feabe93278985d ≤ v < e569a5cb401a267168621aa9a1e7f07fcc9612c3, d5c65159f2895379e11ca13f62feabe93278985d ≤ v < 0aa097a370277deab5337030b9e2d395742f469c, d5c65159f2895379e11ca13f62feabe93278985d ≤ v < 0a946abb82f29abe9a15173b707a449cb039b43e, d5c65159f2895379e11ca13f62feabe93278985d ≤ v < 318703b6f71d1a29ee0ac46c32a38f7734d4cfb2, d5c65159f2895379e11ca13f62feabe93278985d ≤ v < 7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13, d5c65159f2895379e11ca13f62feabe93278985d ≤ v < 40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a, d5c65159f2895379e11ca13f62feabe93278985d ≤ v < 051f954b94479d72222c9fbc82a3eef4777bca01, d5c65159f2895379e11ca13f62feabe93278985d ≤ v < 8b7a26b6681922a38cd5a7829ace61f8e54df9b7, 5.6 | e569a5cb401a267168621aa9a1e7f07fcc9612c3, 0aa097a370277deab5337030b9e2d395742f469c, 0a946abb82f29abe9a15173b707a449cb039b43e, 318703b6f71d1a29ee0ac46c32a38f7734d4cfb2, 7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13, 40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a, 051f954b94479d72222c9fbc82a3eef4777bca01, 8b7a26b6681922a38cd5a7829ace61f8e54df9b7 |
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