{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50235", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.975Z", "datePublished": "2024-11-09T10:14:45.222Z", "dateUpdated": "2026-08-05T11:42:40.071Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:42:40.071Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: clear wdev->cqm_config pointer on free\n\nWhen we free wdev->cqm_config when unregistering, we also\nneed to clear out the pointer since the same wdev/netdev\nmay get re-registered in another network namespace, then\ndestroyed later, running this code again, which results in\na double-free." } ], "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 vulnerability is reached through nl80211/MAC80211_HWSIM generic netlink commands (`NL80211_CMD_SET_CQM`, `NL80211_CMD_SET_WIPHY_NETNS`) issued by a local process. No remote or adjacent network input is needed to create or trigger the double free.\nAC:L - The sequence is deterministic straight-line netlink configuration — set CQM thresholds, move the wiphy to another netns, then unregister again — with no race to win. The attacker also chooses `n_thresholds`, controlling the kmalloc bucket of the freed object and making heap reclaim reliable.\nPR:L - Every required command uses `GENL_UNS_ADMIN_PERM`, i.e. CAP_NET_ADMIN in the socket's user namespace, which an unprivileged user obtains via `unshare -Urn`; `get_net_ns_by_fd()` performs no additional capability check and hwsim radios are created in the caller's own netns.\nUI:N - The attacker performs all steps itself through netlink sockets; no victim action, mount, or file open is required.\nS:U - The corruption is confined to the kernel's own slab allocator and results in kernel-level compromise within the same security authority, with no VM, IOMMU, or sandbox boundary crossed.\nC:H - The double free lets the attacker overlap the freed chunk with a live victim object of a size they control, and the stale pointer is additionally read by `cfg80211_cqm_rssi_notify_work()`/`cfg80211_cqm_rssi_update()`, yielding a use-after-free read that can be escalated to arbitrary kernel memory disclosure.\nI:H - `kfree_rcu()` on the dangling pointer clobbers the first 16 bytes of a reclaimed object with an rcu_head and frees it a second time, and `cfg80211_cqm_rssi_notify()` writes attacker-influenced RSSI values into freed memory — a classic double-free/UAF write primitive leading to arbitrary write and control-flow hijack.\nA:H - A double free corrupts the SLUB freelist, causing immediate slab corruption BUG/KASAN reports and kernel panics, and can be triggered repeatedly by an unprivileged local user." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/wireless/core.c" ], "versions": [ { "version": "c797498e860e9a435a651bbf0789433684ce6dd8", "lessThan": "ba392e1355ba74b1d4fa11b85f71ab6ed7ecc058", "status": "affected", "versionType": "git" }, { "version": "37c20b2effe987b806c8de6d12978e4ffeff026f", "lessThan": "6c44abb2d4c3262737d5d67832daebc8cf48b8c9", "status": "affected", "versionType": "git" }, { "version": "37c20b2effe987b806c8de6d12978e4ffeff026f", "lessThan": "64e4c45d23cd7f6167f69cc2d2877bc7f54292e5", "status": "affected", "versionType": "git" }, { "version": "37c20b2effe987b806c8de6d12978e4ffeff026f", "lessThan": "d5fee261dfd9e17b08b1df8471ac5d5736070917", "status": "affected", "versionType": "git" }, { "version": "32fb9b7d98c3e586bddfb978d383aa8d2b1211bc", "status": "affected", "versionType": "git" }, { "version": "6.1.57", "lessThan": "6.1.116", "status": "affected", "versionType": "semver" }, { "version": "6.5.7", "lessThan": "6.6", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/wireless/core.c" ], "versions": [ { "version": "6.6", "status": "affected" }, { "version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.116", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.60", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.7", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "6.1.57", "versionEndExcluding": "6.1.116" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.6.60" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.11.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5.7" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/ba392e1355ba74b1d4fa11b85f71ab6ed7ecc058" }, { "url": "https://git.kernel.org/stable/c/6c44abb2d4c3262737d5d67832daebc8cf48b8c9" }, { "url": "https://git.kernel.org/stable/c/64e4c45d23cd7f6167f69cc2d2877bc7f54292e5" }, { "url": "https://git.kernel.org/stable/c/d5fee261dfd9e17b08b1df8471ac5d5736070917" } ], "title": "wifi: cfg80211: clear wdev->cqm_config pointer on free", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-50235", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-10-01T20:16:25.988560Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-415", "description": "CWE-415 Double Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:17:26.957Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:27:16.962Z" } } ] } }