CVE-2024-26779

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Per WiFi frame-injection guidance this is Adjacent, requiring only radio range of a mesh/IBSS node.\nAC:L - The attacker controls both sides of the race \u2014 the beacon that triggers `sta_info_insert_rcu()` (which sleeps in `sta_info_insert_drv_state()`, widening the window to milliseconds) and the PM-bit-toggling QoS-data frames that drive `ieee80211_check_fast_xmit()` from softirq \u2014 and can retry indefinitely by rotating source MACs; the IBSS `drv_sta_state` failure path reaches the same state deterministically.\nPR:N - Open 802.11s mesh with kernel MPM (`__mesh_sta_info_alloc`) and non-RSN IBSS (`ieee80211_ibss_finish_sta`) pre-move the peer to `IEEE80211_STA_AUTHORIZED` before insertion, so station creation happens with zero credentials. The attacker is an unauthenticated wireless peer with no account on the target.\nUI:N - No victim action is needed; a node simply operating in mesh or IBSS mode processes the attacker's beacons and data frames automatically in the RX path.\nS:U - The corruption occurs in mac80211/driver structures within the kernel's own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - Passing a never-uploaded `ieee80211_sta` to `drv_tx()` makes drivers use zeroed `drv_priv` \u2014 e.g. mt76 WCID index 0, which aliases another station's hardware key/rate-table entry, so frames are transmitted under the wrong security context \u2014 and the resulting driver-state confusion reads uninitialized/foreign memory, giving a disclosure primitive.\nI:H - This is a state/type confusion on driver-private data: `list_add` on zeroed `list_head`s (ath9k `ath_atx_tid`), indexing per-station driver arrays with an uninitialized index, and in the IBSS unwind case touching resources already freed by `drv_sta_remove`, all of which constitute memory corruption leveragable for write primitives and control-flow hijack.\nA:H - The immediate and near-certain effect is a kernel oops in softirq (NULL/near-NULL dereference from zeroed driver list heads) or a firmware/queue assert, remotely triggerable and repeatable, taking down the wireless node."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/mac80211/sta_info.c", "net/mac80211/tx.c"], "versions": [{"version": "17c18bf880b2464851e5a2bca86521affc46c97e", "lessThan": "76fad1174a0cae6fc857b9f88b261a2e4f07d587", "status": "affected", "versionType": "git"}, {"version": "17c18bf880b2464851e5a2bca86521affc46c97e", "lessThan": "85720b69aef177318f4a18efbcc4302228a340e5", "status": "affected", "versionType": "git"}, {"version": "17c18bf880b2464851e5a2bca86521affc46c97e", "lessThan": 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Per WiFi frame-injection guidance this is Adjacent, requiring only radio range of a mesh/IBSS node.\nAC:L - The attacker controls both sides of the race \u2014 the beacon that triggers `sta_info_insert_rcu()` (which sleeps in `sta_info_insert_drv_state()`, widening the window to milliseconds) and the PM-bit-toggling QoS-data frames that drive `ieee80211_check_fast_xmit()` from softirq \u2014 and can retry indefinitely by rotating source MACs; the IBSS `drv_sta_state` failure path reaches the same state deterministically.\nPR:N - Open 802.11s mesh with kernel MPM (`__mesh_sta_info_alloc`) and non-RSN IBSS (`ieee80211_ibss_finish_sta`) pre-move the peer to `IEEE80211_STA_AUTHORIZED` before insertion, so station creation happens with zero credentials. The attacker is an unauthenticated wireless peer with no account on the target.\nUI:N - No victim action is needed; a node simply operating in mesh or IBSS mode processes the attacker's beacons and data frames automatically in the RX path.\nS:U - The corruption occurs in mac80211/driver structures within the kernel's own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - Passing a never-uploaded `ieee80211_sta` to `drv_tx()` makes drivers use zeroed `drv_priv` \u2014 e.g. mt76 WCID index 0, which aliases another station's hardware key/rate-table entry, so frames are transmitted under the wrong security context \u2014 and the resulting driver-state confusion reads uninitialized/foreign memory, giving a disclosure primitive.\nI:H - This is a state/type confusion on driver-private data: `list_add` on zeroed `list_head`s (ath9k `ath_atx_tid`), indexing per-station driver arrays with an uninitialized index, and in the IBSS unwind case touching resources already freed by `drv_sta_remove`, all of which constitute memory corruption leveragable for write primitives and control-flow hijack.\nA:H - The immediate and near-certain effect is a kernel oops in softirq (NULL/near-NULL dereference from zeroed driver list heads) or a firmware/queue assert, remotely triggerable and repeatable, taking down the wireless node."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "17c18bf880b2464851e5a2bca86521affc46c97e", "lessThan": "76fad1174a0cae6fc857b9f88b261a2e4f07d587", "versionType": "git"}, {"status": "affected", "version": "17c18bf880b2464851e5a2bca86521affc46c97e", "lessThan": "85720b69aef177318f4a18efbcc4302228a340e5", "versionType": "git"}, {"status": "affected", "version": "17c18bf880b2464851e5a2bca86521affc46c97e", "lessThan": "5ffab99e070b9f8ae0cf60c3c3602b84eee818dd", "versionType": "git"}, {"status": "affected", 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the driver, leading to potential crashes because of uninitialized drv_priv\ndata.\nAdd a missing sta->uploaded check and re-check fast xmit after inserting a sta."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mac80211: corrige la condici\u00f3n de ejecuci\u00f3n al habilitar fast-xmit fast-xmit solo debe habilitarse despu\u00e9s de que el sta se haya cargado en el controlador; de lo contrario, podr\u00eda terminar pasando el error sta a\u00fan cargada a trav\u00e9s de llamadas drv_tx al controlador, lo que genera posibles fallas debido a datos drv_priv no inicializados. Agregue una estaci\u00f3n faltante->comprobaci\u00f3n cargada y vuelva a verificar la transmisi\u00f3n r\u00e1pida despu\u00e9s de insertar una estaci\u00f3n."}], "id": "CVE-2024-26779", "lastModified": "2026-08-04T11:17:03.773", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-26779", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-04-03T19:22:50.891620Z", "version": "2.0.3"}}]}, "published": "2024-04-03T17:15:53.423", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/281280276b70c822f55ce15b661f6d1d3228aaa9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/54b79d8786964e2f840e8a2ec4a9f9a50f3d4954"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5ffab99e070b9f8ae0cf60c3c3602b84eee818dd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/76fad1174a0cae6fc857b9f88b261a2e4f07d587"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/85720b69aef177318f4a18efbcc4302228a340e5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/88c18fd06608b3adee547102505d715f21075c9d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bcbc84af1183c8cf3d1ca9b78540c2185cd85e7f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eb39bb548bf974acad7bd6780fe11f9e6652d696"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/281280276b70c822f55ce15b661f6d1d3228aaa9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/54b79d8786964e2f840e8a2ec4a9f9a50f3d4954"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5ffab99e070b9f8ae0cf60c3c3602b84eee818dd"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/76fad1174a0cae6fc857b9f88b261a2e4f07d587"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/85720b69aef177318f4a18efbcc4302228a340e5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/88c18fd06608b3adee547102505d715f21075c9d"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bcbc84af1183c8cf3d1ca9b78540c2185cd85e7f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eb39bb548bf974acad7bd6780fe11f9e6652d696"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2024:3627", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.5.1.rt7.346.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}, {"advisory": "RHSA-2024:3618", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.5.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}, {"advisory": "RHSA-2025:3935", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "kernel-0:5.14.0-427.65.1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2025-04-16T00:00:00Z"}], "bugzilla": {"description": "kernel: wifi: mac80211: fix race condition on enabling fast-xmit", "id": "2273223", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2273223"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-362", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: mac80211: fix race condition on enabling fast-xmit\nfast-xmit must only be enabled after the sta has been uploaded to the driver,\notherwise it could end up passing the not-yet-uploaded sta via drv_tx calls\nto the driver, leading to potential crashes because of uninitialized drv_priv\ndata.\nAdd a missing sta->uploaded check and re-check fast xmit after inserting a sta.", "A vulnerability was found in the mac80211 driver in the Linux kernel. This issue could lead to potential crashes or memory corruption due to of a situation where the driver attempts to utilize data structures that haven't been fully initialized yet."], "name": "CVE-2024-26779", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26779\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26779\nhttps://lore.kernel.org/linux-cve-announce/2024040310-CVE-2024-26779-8030@gregkh/T"], "threat_severity": "Moderate"}

{}