{"api_version":"1","generated_at":"2026-07-23T16:48:02+00:00","cve":"CVE-2026-63822","urls":{"html":"https://cve.report/CVE-2026-63822","api":"https://cve.report/api/cve/CVE-2026-63822.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-63822","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63822"},"summary":{"title":"wifi: ath11k: fix warning when unbinding","description":"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->tx_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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 12:16:55","updated_at":"2026-07-19 12:16:55"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/0aa097a370277deab5337030b9e2d395742f469c","name":"https://git.kernel.org/stable/c/0aa097a370277deab5337030b9e2d395742f469c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a","name":"https://git.kernel.org/stable/c/40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/318703b6f71d1a29ee0ac46c32a38f7734d4cfb2","name":"https://git.kernel.org/stable/c/318703b6f71d1a29ee0ac46c32a38f7734d4cfb2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/051f954b94479d72222c9fbc82a3eef4777bca01","name":"https://git.kernel.org/stable/c/051f954b94479d72222c9fbc82a3eef4777bca01","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13","name":"https://git.kernel.org/stable/c/7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8b7a26b6681922a38cd5a7829ace61f8e54df9b7","name":"https://git.kernel.org/stable/c/8b7a26b6681922a38cd5a7829ace61f8e54df9b7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0a946abb82f29abe9a15173b707a449cb039b43e","name":"https://git.kernel.org/stable/c/0a946abb82f29abe9a15173b707a449cb039b43e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e569a5cb401a267168621aa9a1e7f07fcc9612c3","name":"https://git.kernel.org/stable/c/e569a5cb401a267168621aa9a1e7f07fcc9612c3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63822","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63822","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5c65159f2895379e11ca13f62feabe93278985d e569a5cb401a267168621aa9a1e7f07fcc9612c3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5c65159f2895379e11ca13f62feabe93278985d 0aa097a370277deab5337030b9e2d395742f469c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5c65159f2895379e11ca13f62feabe93278985d 0a946abb82f29abe9a15173b707a449cb039b43e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5c65159f2895379e11ca13f62feabe93278985d 318703b6f71d1a29ee0ac46c32a38f7734d4cfb2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.211 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.177 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.144 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.95 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.38 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.3 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"63822","cve":"CVE-2026-63822","epss":"0.001650000","percentile":"0.060320000","score_date":"2026-07-20","updated_at":"2026-07-21 00:13:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/ath/ath11k/dp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e569a5cb401a267168621aa9a1e7f07fcc9612c3","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"},{"lessThan":"0aa097a370277deab5337030b9e2d395742f469c","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"},{"lessThan":"0a946abb82f29abe9a15173b707a449cb039b43e","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"},{"lessThan":"318703b6f71d1a29ee0ac46c32a38f7734d4cfb2","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"},{"lessThan":"7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"},{"lessThan":"40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"},{"lessThan":"051f954b94479d72222c9fbc82a3eef4777bca01","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"},{"lessThan":"8b7a26b6681922a38cd5a7829ace61f8e54df9b7","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/ath/ath11k/dp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.6"},{"lessThan":"5.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.260","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.211","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.177","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.144","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.95","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.38","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.3","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.260","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.211","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.177","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.144","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.95","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.38","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.3","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"5.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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->tx_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."}],"providerMetadata":{"dateUpdated":"2026-07-19T12:02:19.286Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e569a5cb401a267168621aa9a1e7f07fcc9612c3"},{"url":"https://git.kernel.org/stable/c/0aa097a370277deab5337030b9e2d395742f469c"},{"url":"https://git.kernel.org/stable/c/0a946abb82f29abe9a15173b707a449cb039b43e"},{"url":"https://git.kernel.org/stable/c/318703b6f71d1a29ee0ac46c32a38f7734d4cfb2"},{"url":"https://git.kernel.org/stable/c/7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13"},{"url":"https://git.kernel.org/stable/c/40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a"},{"url":"https://git.kernel.org/stable/c/051f954b94479d72222c9fbc82a3eef4777bca01"},{"url":"https://git.kernel.org/stable/c/8b7a26b6681922a38cd5a7829ace61f8e54df9b7"}],"title":"wifi: ath11k: fix warning when unbinding","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-63822","datePublished":"2026-07-19T12:02:19.286Z","dateReserved":"2026-07-19T07:54:57.014Z","dateUpdated":"2026-07-19T12:02:19.286Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 12:16:55","lastModifiedDate":"2026-07-19 12:16:55","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"63822","Ordinal":"1","Title":"wifi: ath11k: fix warning when unbinding","CVE":"CVE-2026-63822","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"63822","Ordinal":"1","NoteData":"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->tx_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.","Type":"Description","Title":"wifi: ath11k: fix warning when unbinding"}]}}}