{"id":"CVE-2026-63822","state":"PUBLISHED","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.","publishedAt":"2026-07-19T12:02:19.286Z","updatedAt":"2026-08-17T04:51:30.121Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"e569a5cb401a267168621aa9a1e7f07fcc9612c3","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"0aa097a370277deab5337030b9e2d395742f469c","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"0a946abb82f29abe9a15173b707a449cb039b43e","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"318703b6f71d1a29ee0ac46c32a38f7734d4cfb2","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"051f954b94479d72222c9fbc82a3eef4777bca01","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"8b7a26b6681922a38cd5a7829ace61f8e54df9b7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath11k/dp.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.6","versionType":"semver"},{"version":"5.10.260","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.211","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.177","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.144","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.95","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.38","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.3","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath11k/dp.c"]}],"references":["https://git.kernel.org/stable/c/e569a5cb401a267168621aa9a1e7f07fcc9612c3","https://git.kernel.org/stable/c/0aa097a370277deab5337030b9e2d395742f469c","https://git.kernel.org/stable/c/0a946abb82f29abe9a15173b707a449cb039b43e","https://git.kernel.org/stable/c/318703b6f71d1a29ee0ac46c32a38f7734d4cfb2","https://git.kernel.org/stable/c/7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13","https://git.kernel.org/stable/c/40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a","https://git.kernel.org/stable/c/051f954b94479d72222c9fbc82a3eef4777bca01","https://git.kernel.org/stable/c/8b7a26b6681922a38cd5a7829ace61f8e54df9b7"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63822.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63822","state":"PUBLISHED","datePublished":"2026-07-19T12:02:19.286Z","dateUpdated":"2026-08-17T04:51:30.121Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.014Z"},"containers":{"cna":{"title":"wifi: ath11k: fix warning when unbinding","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"e569a5cb401a267168621aa9a1e7f07fcc9612c3","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"0aa097a370277deab5337030b9e2d395742f469c","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"0a946abb82f29abe9a15173b707a449cb039b43e","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"318703b6f71d1a29ee0ac46c32a38f7734d4cfb2","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"7b2e62b9080bf4a5f4e70cfe47156df8d93a4f13","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"40aa3c2b0cb8e34e0576fc94cc70e4e33db03c0a","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"051f954b94479d72222c9fbc82a3eef4777bca01","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"8b7a26b6681922a38cd5a7829ace61f8e54df9b7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath11k/dp.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.6","versionType":"semver"},{"version":"5.10.260","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.211","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.177","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.144","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.95","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.38","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.3","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath11k/dp.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T04:51:30.121Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"5.10.260"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"5.15.211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.1.177"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.6.144"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.12.95"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.18.38"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.1.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}