{"id":"CVE-2026-63822","summary":"wifi: ath11k: fix warning when unbinding","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: fix warning when unbinding\n\nIf there is an error during some initialization related to firmware,\nthe buffers dp-\u003etx_ring[i].tx_status are released.\nHowever this is released again when the device is unbinded (ath11k_pci),\nand we get:\nWARNING: CPU: 0 PID: 6231 at mm/slub.c:4368 free_large_kmalloc+0x57/0x90\nCall Trace:\nfree_large_kmalloc\nath11k_dp_free\nath11k_core_deinit\nath11k_pci_remove\n...\n\nThe issue is always reproducible from a VM because the MSI addressing\ninitialization is failing.\n\nIn order to fix the issue, just set the buffers to NULL after releasing in\norder to avoid the double free.","modified":"2026-07-21T03:47:30.142345958Z","published":"2026-07-19T12:02:19.286Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63822.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/051f954b94479d72222c9fbc82a3eef4777bca01"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0a946abb82f29abe9a15173b707a449cb039b43e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0aa097a370277deab5337030b9e2d395742f469c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/318703b6f71d1a29ee0ac46c32a38f7734d4cfb2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8b7a26b6681922a38cd5a7829ace61f8e54df9b7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e569a5cb401a267168621aa9a1e7f07fcc9612c3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63822.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63822"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d5c65159f2895379e11ca13f62feabe93278985d"},{"fixed":"e569a5cb401a267168621aa9a1e7f07fcc9612c3"},{"fixed":"0aa097a370277deab5337030b9e2d395742f469c"},{"fixed":"0a946abb82f29abe9a15173b707a449cb039b43e"},{"fixed":"318703b6f71d1a29ee0ac46c32a38f7734d4cfb2"},{"fixed":"7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13"},{"fixed":"40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a"},{"fixed":"051f954b94479d72222c9fbc82a3eef4777bca01"},{"fixed":"8b7a26b6681922a38cd5a7829ace61f8e54df9b7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63822.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.6.0"},{"fixed":"5.10.260"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.211"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.177"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.144"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.95"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.38"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63822.json"}}],"schema_version":"1.7.5"}