{"id":"CVE-2026-92496","state":"PUBLISHED","title":"wifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()\n\nCurrently, in ath11k_wmi_tlv_op_rx(), the firmware buffer is read\nwithout first verifying that the buffer has enough data to hold a\nheader. This could result in a buffer overread.\n\nAdd an upfront length check before dereferencing skb->data as a\nwmi_cmd_hdr. The check is placed before the trace_ath11k_wmi_event()\ncall to preserve the existing trace semantics (tracing the full raw\nWMI event including the header), unlike the analogous ath12k fix which\ncould use skb_pull_data() directly.\n\nCompile tested only.","publishedAt":"2026-09-17T16:10:11.423Z","updatedAt":"2026-10-19T09:04:02.474Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"20166fd9a4ad15d7eccc63c9dc99680aea6558ef","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"71690d26c1415e816158b45ee354367244c50d4c","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"f9726f6d97dca94ab14739c8b632301a940a7e8f","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"2677fc48dd10dc08cdec99c2692d50fe5f48dcbf","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"9652e7e23137538169f60323300cae3413475685","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"72a5e45f606ec454ef556a68ffd92e06b0677f44","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"9ddbc95dac167e3f2d0e3859e6ce022ae0184fc1","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"9ef9dd30058cc9223c72f711dca1a28a5947d0c5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath11k/wmi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.6","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","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/wmi.c"]}],"references":["https://git.kernel.org/stable/c/20166fd9a4ad15d7eccc63c9dc99680aea6558ef","https://git.kernel.org/stable/c/71690d26c1415e816158b45ee354367244c50d4c","https://git.kernel.org/stable/c/f9726f6d97dca94ab14739c8b632301a940a7e8f","https://git.kernel.org/stable/c/2677fc48dd10dc08cdec99c2692d50fe5f48dcbf","https://git.kernel.org/stable/c/9652e7e23137538169f60323300cae3413475685","https://git.kernel.org/stable/c/72a5e45f606ec454ef556a68ffd92e06b0677f44","https://git.kernel.org/stable/c/9ddbc95dac167e3f2d0e3859e6ce022ae0184fc1","https://git.kernel.org/stable/c/9ef9dd30058cc9223c72f711dca1a28a5947d0c5"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/92xxx/CVE-2026-92496.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92496","state":"PUBLISHED","datePublished":"2026-09-17T16:10:11.423Z","dateUpdated":"2026-10-19T09:04:02.474Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-16T12:21:13.871Z"},"containers":{"cna":{"title":"wifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()\n\nCurrently, in ath11k_wmi_tlv_op_rx(), the firmware buffer is read\nwithout first verifying that the buffer has enough data to hold a\nheader. This could result in a buffer overread.\n\nAdd an upfront length check before dereferencing skb->data as a\nwmi_cmd_hdr. The check is placed before the trace_ath11k_wmi_event()\ncall to preserve the existing trace semantics (tracing the full raw\nWMI event including the header), unlike the analogous ath12k fix which\ncould use skb_pull_data() directly.\n\nCompile tested only."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"20166fd9a4ad15d7eccc63c9dc99680aea6558ef","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"71690d26c1415e816158b45ee354367244c50d4c","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"f9726f6d97dca94ab14739c8b632301a940a7e8f","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"2677fc48dd10dc08cdec99c2692d50fe5f48dcbf","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"9652e7e23137538169f60323300cae3413475685","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"72a5e45f606ec454ef556a68ffd92e06b0677f44","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"9ddbc95dac167e3f2d0e3859e6ce022ae0184fc1","versionType":"git"},{"version":"d5c65159f2895379e11ca13f62feabe93278985d","status":"affected","lessThan":"9ef9dd30058cc9223c72f711dca1a28a5947d0c5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath11k/wmi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.6","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","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/wmi.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/20166fd9a4ad15d7eccc63c9dc99680aea6558ef"},{"url":"https://git.kernel.org/stable/c/71690d26c1415e816158b45ee354367244c50d4c"},{"url":"https://git.kernel.org/stable/c/f9726f6d97dca94ab14739c8b632301a940a7e8f"},{"url":"https://git.kernel.org/stable/c/2677fc48dd10dc08cdec99c2692d50fe5f48dcbf"},{"url":"https://git.kernel.org/stable/c/9652e7e23137538169f60323300cae3413475685"},{"url":"https://git.kernel.org/stable/c/72a5e45f606ec454ef556a68ffd92e06b0677f44"},{"url":"https://git.kernel.org/stable/c/9ddbc95dac167e3f2d0e3859e6ce022ae0184fc1"},{"url":"https://git.kernel.org/stable/c/9ef9dd30058cc9223c72f711dca1a28a5947d0c5"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:04:02.474Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}