CVE-2024-50237

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No remote or adjacent peer can drive `.get_txpower`.\nAC:L - There is no race, no memory-grooming requirement, and no attacker-uncontrollable condition; the attacker simply issues the request and can poll indefinitely until a wireless vif is in the not-in-driver state, which is the persistent default on rfkill'd/Wi-Fi-off systems, on created-but-unstarted vifs, and on every vif after a hw-restart reconfig failure.\nPR:L - A plain unprivileged local account suffices \u2014 `NL80211_CMD_GET_INTERFACE` is explicitly marked in the nl80211 ops table as retrievable by unprivileged users (no `GENL_ADMIN_PERM`), and `wext_permission_check()` requires `CAP_NET_ADMIN` only for SET ioctls, leaving `SIOCGIWTXPOW` open to anyone.\nUI:N - The attacker triggers the bug entirely on their own by running `iw dev` or `iwconfig`; no action by any other user or administrator is needed at the time of exploitation.\nS:U - The uninitialized/stale dereference happens in kernel driver code and its consequences stay within the kernel's own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - On all pre-6.11 affected branches `vif->drv_priv` is never cleared after `remove_interface()`, so the driver dereferences pointers to freed objects \u2014 a use-after-free read whose result is additionally returned to userspace as the tx-power value via `NL80211_ATTR_WIPHY_TX_POWER_LEVEL`/`iwconfig`, leaking kernel memory contents.\nI:H - Driver `.get_txpower` handlers operate on the stale private area (dereferencing freed pointers, taking locks and walking driver structures through them), and a use-after-free on attacker-reclaimable heap memory is leverageable for controlled writes and control-flow influence, so integrity impact is scored High.\nA:H - Dereferencing uninitialized or freed driver private data reliably oopses the kernel \u2014 the fix's own rationale is \"avoid potentially crashing in the driver because of uninitialized private data\" \u2014 and any unprivileged 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"https://git.kernel.org/stable/c/b0b862aa3dbcd16b3c4715259a825f48ca540088"}, {"url": "https://git.kernel.org/stable/c/78b698fbf37208ee921ee4cedea75b5d33d6ea9f"}, {"url": "https://git.kernel.org/stable/c/c21efba8b5a86537ccdf43f77536bad02f82776c"}, {"url": "https://git.kernel.org/stable/c/b2bcbe5450b20641f512d6b26c6b256a5a4f847f"}, {"url": "https://git.kernel.org/stable/c/8f6cd4d5bb7406656835a90e4f1a2192607f0c21"}, {"url": "https://git.kernel.org/stable/c/ee35c423042c9e04079fdee3db545135d609d6ea"}, {"url": "https://git.kernel.org/stable/c/3ccf525a73d48e814634847f6d4a6150c6f0dffc"}, {"url": "https://git.kernel.org/stable/c/393b6bc174b0dd21bb2a36c13b36e62fc3474a23"}], "title": "wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": 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"exploitabilityScore": 1.8, "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": "nvd@nist.gov", "type": "Primary"}, {"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": 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"416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-908"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2025:6966", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-570.12.1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-13T00:00:00Z"}, {"advisory": "RHSA-2025:6966", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-570.12.1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-13T00:00:00Z"}], "bugzilla": {"description": "kernel: wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower", "id": "2324897", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2324897"}, "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-908", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: mac80211: do not pass a stopped vif to the driver in .get_txpower\nAvoid potentially crashing in the driver because of uninitialized private data"], "name": "CVE-2024-50237", "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:8", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-11-09T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50237\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50237\nhttps://lore.kernel.org/linux-cve-announce/2024110932-CVE-2024-50237-7073@gregkh/T"], "threat_severity": "Moderate"}

{}