{"api_version":"1","generated_at":"2026-09-19T10:58:31+00:00","cve":"CVE-2026-93094","urls":{"html":"https://cve.report/CVE-2026-93094","api":"https://cve.report/api/cve/CVE-2026-93094.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93094","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93094"},"summary":{"title":"wifi: ath12k: fix dp_link_peer dangling references on AP vdev rollback","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: fix dp_link_peer dangling references on AP vdev rollback\n\nath12k_mac_vdev_create() for an AP vdev creates the bss self-peer via\nath12k_peer_create(), which finishes by calling\nath12k_dp_link_peer_assign() to publish the dp_link_peer in the\ndp_hw->dp_peers[peerid_index] RCU table, in the dp_peer's\nlink_peers[] array, and in the per-addr rhashtable.\n\nIf a step after ath12k_peer_create() fails the function jumps to\nerr_peer_del, which open-codes a WMI peer_delete and waits for the\nunmap / delete_resp events. The wait_for_peer_delete_done() path\nrelies on ath12k_dp_link_peer_unmap_event() freeing the dp_link_peer\nwhen the unmap arrives, but err_peer_del never calls\nath12k_dp_link_peer_unassign() first. The published references in\nthe dp_hw RCU table, dp_peer->link_peers[] and the rhashtable are\nleft pointing at the dp_link_peer that unmap_event then frees,\nproducing dangling pointers and use-after-free on subsequent\nlookups.\n\nReplace the open-coded sequence with a call to ath12k_peer_delete(),\nwhich already does ath12k_dp_link_peer_unassign() before sending the\nWMI command. This drops the published references before the\ndp_link_peer is freed, in the same order as the normal teardown path\nin ath12k_mac_remove_link_interface().\n\nTested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c7-00108-QCAHMTSWPL_V1.0_V2.0_SILICONZ_UPSTREAM-3","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:18:03","updated_at":"2026-09-17 17:18:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/af405d216316d99f9b48733145fc708110011e0f","name":"https://git.kernel.org/stable/c/af405d216316d99f9b48733145fc708110011e0f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f066e1a93703c5be0fd905109d00587541711c97","name":"https://git.kernel.org/stable/c/f066e1a93703c5be0fd905109d00587541711c97","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93094","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93094","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5525f12fa671a007c6c6044c861eee86de71b576 af405d216316d99f9b48733145fc708110011e0f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5525f12fa671a007c6c6044c861eee86de71b576 f066e1a93703c5be0fd905109d00587541711c97 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"93094","cve":"CVE-2026-93094","epss":"0.001890000","percentile":"0.088850000","score_date":"2026-09-18","updated_at":"2026-09-19 00:06:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/ath/ath12k/mac.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"af405d216316d99f9b48733145fc708110011e0f","status":"affected","version":"5525f12fa671a007c6c6044c861eee86de71b576","versionType":"git"},{"lessThan":"f066e1a93703c5be0fd905109d00587541711c97","status":"affected","version":"5525f12fa671a007c6c6044c861eee86de71b576","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/ath/ath12k/mac.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.0"},{"lessThan":"7.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"7.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"7.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: fix dp_link_peer dangling references on AP vdev rollback\n\nath12k_mac_vdev_create() for an AP vdev creates the bss self-peer via\nath12k_peer_create(), which finishes by calling\nath12k_dp_link_peer_assign() to publish the dp_link_peer in the\ndp_hw->dp_peers[peerid_index] RCU table, in the dp_peer's\nlink_peers[] array, and in the per-addr rhashtable.\n\nIf a step after ath12k_peer_create() fails the function jumps to\nerr_peer_del, which open-codes a WMI peer_delete and waits for the\nunmap / delete_resp events. The wait_for_peer_delete_done() path\nrelies on ath12k_dp_link_peer_unmap_event() freeing the dp_link_peer\nwhen the unmap arrives, but err_peer_del never calls\nath12k_dp_link_peer_unassign() first. The published references in\nthe dp_hw RCU table, dp_peer->link_peers[] and the rhashtable are\nleft pointing at the dp_link_peer that unmap_event then frees,\nproducing dangling pointers and use-after-free on subsequent\nlookups.\n\nReplace the open-coded sequence with a call to ath12k_peer_delete(),\nwhich already does ath12k_dp_link_peer_unassign() before sending the\nWMI command. This drops the published references before the\ndp_link_peer is freed, in the same order as the normal teardown path\nin ath12k_mac_remove_link_interface().\n\nTested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c7-00108-QCAHMTSWPL_V1.0_V2.0_SILICONZ_UPSTREAM-3"}],"providerMetadata":{"dateUpdated":"2026-09-17T16:11:09.034Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/af405d216316d99f9b48733145fc708110011e0f"},{"url":"https://git.kernel.org/stable/c/f066e1a93703c5be0fd905109d00587541711c97"}],"title":"wifi: ath12k: fix dp_link_peer dangling references on AP vdev rollback","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93094","datePublished":"2026-09-17T16:11:09.034Z","dateReserved":"2026-09-17T16:02:15.084Z","dateUpdated":"2026-09-17T16:11:09.034Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:18:03","lastModifiedDate":"2026-09-17 17:18:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93094","Ordinal":"1","Title":"wifi: ath12k: fix dp_link_peer dangling references on AP vdev ro","CVE":"CVE-2026-93094","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93094","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: fix dp_link_peer dangling references on AP vdev rollback\n\nath12k_mac_vdev_create() for an AP vdev creates the bss self-peer via\nath12k_peer_create(), which finishes by calling\nath12k_dp_link_peer_assign() to publish the dp_link_peer in the\ndp_hw->dp_peers[peerid_index] RCU table, in the dp_peer's\nlink_peers[] array, and in the per-addr rhashtable.\n\nIf a step after ath12k_peer_create() fails the function jumps to\nerr_peer_del, which open-codes a WMI peer_delete and waits for the\nunmap / delete_resp events. The wait_for_peer_delete_done() path\nrelies on ath12k_dp_link_peer_unmap_event() freeing the dp_link_peer\nwhen the unmap arrives, but err_peer_del never calls\nath12k_dp_link_peer_unassign() first. The published references in\nthe dp_hw RCU table, dp_peer->link_peers[] and the rhashtable are\nleft pointing at the dp_link_peer that unmap_event then frees,\nproducing dangling pointers and use-after-free on subsequent\nlookups.\n\nReplace the open-coded sequence with a call to ath12k_peer_delete(),\nwhich already does ath12k_dp_link_peer_unassign() before sending the\nWMI command. This drops the published references before the\ndp_link_peer is freed, in the same order as the normal teardown path\nin ath12k_mac_remove_link_interface().\n\nTested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c7-00108-QCAHMTSWPL_V1.0_V2.0_SILICONZ_UPSTREAM-3","Type":"Description","Title":"wifi: ath12k: fix dp_link_peer dangling references on AP vdev ro"}]}}}