{"id":"CVE-2026-46271","state":"PUBLISHED","title":"wifi: ath12k: do WoW offloads only on primary link","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: do WoW offloads only on primary link\n\nIn case of multi-link connection, WCN7850 firmware crashes due to WoW\noffloads enabled on both primary and secondary links.\n\nChange to do it only on primary link to fix it.\n\nTested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00284-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1","publishedAt":"2026-06-03T15:50:13.645Z","updatedAt":"2026-10-19T19:36:56.613Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"32f7b19668bd2894f1a236580c2132fc4b9f4449","status":"affected","lessThan":"7379837c3f9efa576dc2d716ebfaa3a113b3112f","versionType":"git"},{"version":"32f7b19668bd2894f1a236580c2132fc4b9f4449","status":"affected","lessThan":"e042da1085d9f1686c58a4378d5840f52a36598e","versionType":"git"},{"version":"32f7b19668bd2894f1a236580c2132fc4b9f4449","status":"affected","lessThan":"e62102ac9b773bdb08475aa9ca24dea61ae98708","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath12k/wow.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.16","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","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/ath12k/wow.c"]}],"references":["https://git.kernel.org/stable/c/7379837c3f9efa576dc2d716ebfaa3a113b3112f","https://git.kernel.org/stable/c/e042da1085d9f1686c58a4378d5840f52a36598e","https://git.kernel.org/stable/c/e62102ac9b773bdb08475aa9ca24dea61ae98708"],"weaknesses":["CWE-667"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46271.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46271","state":"PUBLISHED","datePublished":"2026-06-03T15:50:13.645Z","dateUpdated":"2026-10-19T19:36:56.613Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.109Z"},"containers":{"cna":{"title":"wifi: ath12k: do WoW offloads only on primary link","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: do WoW offloads only on primary link\n\nIn case of multi-link connection, WCN7850 firmware crashes due to WoW\noffloads enabled on both primary and secondary links.\n\nChange to do it only on primary link to fix it.\n\nTested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00284-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"32f7b19668bd2894f1a236580c2132fc4b9f4449","status":"affected","lessThan":"7379837c3f9efa576dc2d716ebfaa3a113b3112f","versionType":"git"},{"version":"32f7b19668bd2894f1a236580c2132fc4b9f4449","status":"affected","lessThan":"e042da1085d9f1686c58a4378d5840f52a36598e","versionType":"git"},{"version":"32f7b19668bd2894f1a236580c2132fc4b9f4449","status":"affected","lessThan":"e62102ac9b773bdb08475aa9ca24dea61ae98708","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath12k/wow.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.16","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","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/ath12k/wow.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7379837c3f9efa576dc2d716ebfaa3a113b3112f"},{"url":"https://git.kernel.org/stable/c/e042da1085d9f1686c58a4378d5840f52a36598e"},{"url":"https://git.kernel.org/stable/c/e62102ac9b773bdb08475aa9ca24dea61ae98708"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The vulnerable code runs only in ath12k_wow_op_suspend during system suspend with WoW enabled, reached via wiphy PM → cfg80211 → mac80211 drv_suspend, not via remote WiFi frame handling.\nAC:L - On affected WCN7850 hardware, a local attacker (or rogue MLO AP plus victim suspend) can reliably trigger the path by associating over MLO and invoking suspend while wowlan is configured; no uncontrollable race or rare layout is required.\nPR:L - Exploitation requires local suspend capability (typical session/logind user) and an active WoW configuration (often pre-set by NetworkManager; otherwise NL80211_CMD_SET_WOWLAN needs CAP_NET_ADMIN, obtainable in a user network namespace).\nUI:N - Suspend/WoW entry is commonly driven by automatic system power management without a separate deliberate user security action beyond normal laptop use.\nS:U - Impact is confined to the WiFi driver/firmware stack on the same host; it does not cross VM, container, or IOMMU security boundaries.\nC:H - Although the immediate fault is firmware-side, the failure mode cannot rule out disclosure via corrupted firmware/host DMA or WMI shared buffers; per conservative scoring, treat closed firmware memory faults as potential arbitrary read when impact is uncertain.\nI:H - Duplicate WoW offload WMI on multiple MLO vdevs corrupts firmware state; when exploitation path to host integrity is uncertain, score High because firmware compromise over PCIe may enable control of host-visible rings and descriptors.\nA:H - The commit documents WCN7850 firmware crash when WoW offloads are enabled on both MLO links, causing WiFi subsystem failure and broken or wedged suspend/resume on affected devices."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:30:55.666Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-46271","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-10-16T15:21:33.891489Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-667","lang":"en","type":"CWE","description":"CWE-667 Improper Locking"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-19T19:36:56.613Z"}}]}}}