{"id":"CVE-2026-98828","state":"PUBLISHED","title":"wifi: ath9k: reject short WMI command responses","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k: reject short WMI command responses\n\nath9k_wmi_rsp_callback() removes the validated WMI header and copies\nthe number of bytes expected by the waiting command into its response\nbuffer. A device response shorter than that expectation can therefore\nbe read beyond the skb payload.\n\nRecord -EMSGSIZE for a short response, complete the waiter, and return\nthe stored status from the command path. This also prevents callers from\nconsuming stale response bytes as a successful reply.","publishedAt":"2026-10-18T15:49:22.580Z","updatedAt":"2026-10-19T09:26:20.947Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fb9987d0f748c983bb795a86f47522313f701a08","status":"affected","lessThan":"03ef61d05aa26022327f971b790f07e6bf6e35d6","versionType":"git"},{"version":"fb9987d0f748c983bb795a86f47522313f701a08","status":"affected","lessThan":"e0c21130c1c7791ba73b19a3a9ea767c8cd43745","versionType":"git"},{"version":"fb9987d0f748c983bb795a86f47522313f701a08","status":"affected","lessThan":"a3b0137c855a61371d9cf9993b8bcc33c9798202","versionType":"git"},{"version":"fb9987d0f748c983bb795a86f47522313f701a08","status":"affected","lessThan":"93ce8ea70451e800601bc9444aa33043de15d67b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath9k/wmi.c","drivers/net/wireless/ath/ath9k/wmi.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.35","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.35","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/ath/ath9k/wmi.c","drivers/net/wireless/ath/ath9k/wmi.h"]}],"references":["https://git.kernel.org/stable/c/03ef61d05aa26022327f971b790f07e6bf6e35d6","https://git.kernel.org/stable/c/e0c21130c1c7791ba73b19a3a9ea767c8cd43745","https://git.kernel.org/stable/c/a3b0137c855a61371d9cf9993b8bcc33c9798202","https://git.kernel.org/stable/c/93ce8ea70451e800601bc9444aa33043de15d67b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98828.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98828","state":"PUBLISHED","datePublished":"2026-10-18T15:49:22.580Z","dateUpdated":"2026-10-19T09:26:20.947Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.372Z"},"containers":{"cna":{"title":"wifi: ath9k: reject short WMI command responses","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k: reject short WMI command responses\n\nath9k_wmi_rsp_callback() removes the validated WMI header and copies\nthe number of bytes expected by the waiting command into its response\nbuffer. A device response shorter than that expectation can therefore\nbe read beyond the skb payload.\n\nRecord -EMSGSIZE for a short response, complete the waiter, and return\nthe stored status from the command path. This also prevents callers from\nconsuming stale response bytes as a successful reply."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fb9987d0f748c983bb795a86f47522313f701a08","status":"affected","lessThan":"03ef61d05aa26022327f971b790f07e6bf6e35d6","versionType":"git"},{"version":"fb9987d0f748c983bb795a86f47522313f701a08","status":"affected","lessThan":"e0c21130c1c7791ba73b19a3a9ea767c8cd43745","versionType":"git"},{"version":"fb9987d0f748c983bb795a86f47522313f701a08","status":"affected","lessThan":"a3b0137c855a61371d9cf9993b8bcc33c9798202","versionType":"git"},{"version":"fb9987d0f748c983bb795a86f47522313f701a08","status":"affected","lessThan":"93ce8ea70451e800601bc9444aa33043de15d67b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath9k/wmi.c","drivers/net/wireless/ath/ath9k/wmi.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.35","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.35","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/ath/ath9k/wmi.c","drivers/net/wireless/ath/ath9k/wmi.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/03ef61d05aa26022327f971b790f07e6bf6e35d6"},{"url":"https://git.kernel.org/stable/c/e0c21130c1c7791ba73b19a3a9ea767c8cd43745"},{"url":"https://git.kernel.org/stable/c/a3b0137c855a61371d9cf9993b8bcc33c9798202"},{"url":"https://git.kernel.org/stable/c/93ce8ea70451e800601bc9444aa33043de15d67b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:26:20.947Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.35","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.35","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.35","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.35","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}