{"id":"CVE-2026-98830","state":"PUBLISHED","title":"wifi: wfx: validate MIB read length before copying to caller","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wfx: validate MIB read length before copying to caller\n\nwfx_hif_read_mib() copies reply->length bytes from the firmware\nresponse into the caller-provided buffer without checking that\nreply->length does not exceed val_len. A firmware response with\na length field larger than expected overruns the caller buffer and\nreads past the end of the reply allocation.\n\nReplace the dead -ENOMEM check with an active validation that\nreply->length fits within val_len before the memcpy.","publishedAt":"2026-10-18T15:49:31.843Z","updatedAt":"2026-10-30T12:40:02.347Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f95a29d40782f4f0052a692a822de3ba044b19ff","status":"affected","lessThan":"b8310b55e53622a393d14af4939f620c1828778b","versionType":"git"},{"version":"f95a29d40782f4f0052a692a822de3ba044b19ff","status":"affected","lessThan":"819d4c1323e2a9b7329021d5367aa01add22b5dc","versionType":"git"},{"version":"f95a29d40782f4f0052a692a822de3ba044b19ff","status":"affected","lessThan":"02886c18a340da59df57365f29009e1258bfe333","versionType":"git"},{"version":"f95a29d40782f4f0052a692a822de3ba044b19ff","status":"affected","lessThan":"71d140099165de03128c00dd129f1eab21c6a3c4","versionType":"git"},{"version":"f95a29d40782f4f0052a692a822de3ba044b19ff","status":"affected","lessThan":"7acb36fd60a3e7b858f12e69a919c3609b281408","versionType":"git"},{"version":"f95a29d40782f4f0052a692a822de3ba044b19ff","status":"affected","lessThan":"ce67ebe9d8629776ce38e6995ae72fb903c828db","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/silabs/wfx/hif_tx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","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/silabs/wfx/hif_tx.c"]}],"references":["https://git.kernel.org/stable/c/b8310b55e53622a393d14af4939f620c1828778b","https://git.kernel.org/stable/c/819d4c1323e2a9b7329021d5367aa01add22b5dc","https://git.kernel.org/stable/c/02886c18a340da59df57365f29009e1258bfe333","https://git.kernel.org/stable/c/71d140099165de03128c00dd129f1eab21c6a3c4","https://git.kernel.org/stable/c/7acb36fd60a3e7b858f12e69a919c3609b281408","https://git.kernel.org/stable/c/ce67ebe9d8629776ce38e6995ae72fb903c828db"],"weaknesses":[],"ingestedAt":"2026-10-30T13:00:06.648Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98830.json","commit":"cb14bf1b43b0c9f05f7f40eae2246263fd430780","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98830","state":"PUBLISHED","datePublished":"2026-10-18T15:49:31.843Z","dateUpdated":"2026-10-30T12:40:02.347Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.372Z"},"containers":{"cna":{"title":"wifi: wfx: validate MIB read length before copying to caller","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wfx: validate MIB read length before copying to caller\n\nwfx_hif_read_mib() copies reply->length bytes from the firmware\nresponse into the caller-provided buffer without checking that\nreply->length does not exceed val_len. A firmware response with\na length field larger than expected overruns the caller buffer and\nreads past the end of the reply allocation.\n\nReplace the dead -ENOMEM check with an active validation that\nreply->length fits within val_len before the memcpy."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f95a29d40782f4f0052a692a822de3ba044b19ff","status":"affected","lessThan":"b8310b55e53622a393d14af4939f620c1828778b","versionType":"git"},{"version":"f95a29d40782f4f0052a692a822de3ba044b19ff","status":"affected","lessThan":"819d4c1323e2a9b7329021d5367aa01add22b5dc","versionType":"git"},{"version":"f95a29d40782f4f0052a692a822de3ba044b19ff","status":"affected","lessThan":"02886c18a340da59df57365f29009e1258bfe333","versionType":"git"},{"version":"f95a29d40782f4f0052a692a822de3ba044b19ff","status":"affected","lessThan":"71d140099165de03128c00dd129f1eab21c6a3c4","versionType":"git"},{"version":"f95a29d40782f4f0052a692a822de3ba044b19ff","status":"affected","lessThan":"7acb36fd60a3e7b858f12e69a919c3609b281408","versionType":"git"},{"version":"f95a29d40782f4f0052a692a822de3ba044b19ff","status":"affected","lessThan":"ce67ebe9d8629776ce38e6995ae72fb903c828db","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/silabs/wfx/hif_tx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","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/silabs/wfx/hif_tx.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b8310b55e53622a393d14af4939f620c1828778b"},{"url":"https://git.kernel.org/stable/c/819d4c1323e2a9b7329021d5367aa01add22b5dc"},{"url":"https://git.kernel.org/stable/c/02886c18a340da59df57365f29009e1258bfe333"},{"url":"https://git.kernel.org/stable/c/71d140099165de03128c00dd129f1eab21c6a3c4"},{"url":"https://git.kernel.org/stable/c/7acb36fd60a3e7b858f12e69a919c3609b281408"},{"url":"https://git.kernel.org/stable/c/ce67ebe9d8629776ce38e6995ae72fb903c828db"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:40:02.347Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}