{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52776", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T15:19:24.239Z", "datePublished": "2024-05-21T15:30:56.906Z", "dateUpdated": "2026-08-05T09:11:23.511Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:11:23.511Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: fix dfs-radar and temperature event locking\n\nThe ath12k active pdevs are protected by RCU but the DFS-radar and\ntemperature event handling code calling ath12k_mac_get_ar_by_pdev_id()\nwas not marked as a read-side critical section.\n\nMark the code in question as RCU read-side critical sections to avoid\nany potential use-after-free issues.\n\nNote that the temperature event handler looks like a place holder\ncurrently but would still trigger an RCU lockdep splat.\n\nCompile tested only." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The vulnerable path runs when ath12k firmware delivers WMI_PDEV_DFS_RADAR_DETECTION_EVENTID over CE/HTC into ath12k_wmi_pdev_dfs_radar_detected_event; an attacker must be in RF range to inject radar-like pulses against a DFS AP, matching Adjacent for Wi‑Fi/RF attacks.\nAC:L - An adjacent attacker can repeatedly spoof radar to fire the event handler at will, and the resulting DFS CAC cancel/channel leave/reconfigure races with further in-flight WMI events against pdevs_active, so the attacker influences both sides of the missing-RCU race.\nPR:N - Radar pulses are processed entirely in the firmware-to-host WMI softirq path with no host account, capability, or authentication check; the worst reasonable case is an unauthenticated peer near an ath12k AP on a 5 GHz DFS channel.\nUI:N - Once the radio is up with DFS phyerr offload enabled, firmware radar indications are handled automatically with no victim action such as mounting a device or opening a file.\nS:U - The potential use-after-free corrupts ath12k/mac80211 state inside the host kernel authority only and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - Missing rcu_read_lock around ath12k_mac_get_ar_by_pdev_id() allows use of RCU-protected pdev/ar state after deactivation/teardown; that UAF enables heap reuse and arbitrary kernel disclosure.\nI:H - The same UAF of sprayable ath12k/ieee80211 state while the handler still calls ieee80211_radar_detected(ar->hw) yields write and control-flow primitives characteristic of exploitable kernel UAFs.\nA:H - Concurrent use of a deactivated or freed ar/hw after synchronize_rcu without a matching read-side critical section can oops/panic the kernel, so availability impact is complete even without full code execution." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/ath/ath12k/wmi.c" ], "versions": [ { "version": "d889913205cf7ebda905b1e62c5867ed4e39f6c2", "lessThan": "774de37c147fea81f2c2e4be5082304f4f71d535", "status": "affected", "versionType": "git" }, { "version": "d889913205cf7ebda905b1e62c5867ed4e39f6c2", "lessThan": "d7a5f7f76568e48869916d769e28b9f3ca70c78e", "status": "affected", "versionType": "git" }, { "version": "d889913205cf7ebda905b1e62c5867ed4e39f6c2", "lessThan": "69bd216e049349886405b1c87a55dce3d35d1ba7", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/ath/ath12k/wmi.c" ], "versions": [ { "version": "6.3", "status": "affected" }, { "version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver" }, { "version": "6.5.13", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.3", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.5.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.6.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.7" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/774de37c147fea81f2c2e4be5082304f4f71d535" }, { "url": "https://git.kernel.org/stable/c/d7a5f7f76568e48869916d769e28b9f3ca70c78e" }, { "url": "https://git.kernel.org/stable/c/69bd216e049349886405b1c87a55dce3d35d1ba7" } ], "title": "wifi: ath12k: fix dfs-radar and temperature event locking", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-05-29T18:48:38.223706Z", "id": "CVE-2023-52776", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-31T14:25:28.524Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:11:35.862Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/774de37c147fea81f2c2e4be5082304f4f71d535", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/d7a5f7f76568e48869916d769e28b9f3ca70c78e", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/69bd216e049349886405b1c87a55dce3d35d1ba7", "tags": [ "x_transferred" ] } ] } ] } }