{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-27434", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-25T13:47:42.687Z", "datePublished": "2024-05-17T12:08:50.896Z", "dateUpdated": "2026-08-05T11:29:47.522Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:29:47.522Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: don't set the MFP flag for the GTK\n\nThe firmware doesn't need the MFP flag for the GTK, it can even make the\nfirmware crash. in case the AP is configured with: group cipher TKIP and\nMFPC. We would send the GTK with cipher = TKIP and MFP which is of course\nnot possible." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - The trigger is entirely controlled by the 802.11 peer (AP) via its advertised RSN group cipher and MFPC capability, consumed during association/4-way handshake by a Wi-Fi client. This requires the attacker to be within radio range on the same wireless segment, i.e. adjacent network.\nAC:L - An attacker operating an AP (including an evil twin on a network whose PSK is known or shared, such as café/office/guest Wi-Fi) fully controls the required configuration — group cipher TKIP with MFPC — and the crash follows deterministically on GTK installation, with no race or memory-layout dependency. The other precondition (PMF negotiated, so `sta->mfp` is set) is the default on modern supplicants.\nPR:N - The attacker needs no account, capability, or any privilege on the victim system; they merely configure the AP the client associates with. No local access or kernel-side authorization is involved on the target.\nUI:N - wpa_supplicant/NetworkManager auto-reconnect to a known SSID after a deauth means the association and GTK installation happen with no user action. The vulnerable code runs as part of normal automated connection setup.\nS:U - The consequences are confined to the Wi-Fi device and the kernel driver managing it — the same security authority as the vulnerable component. No VM, IOMMU, or sandbox boundary is crossed.\nC:N - The defect is an incorrect flag bit in a firmware command; there is no out-of-bounds read, uninitialized data disclosure, or leak of kernel memory to the attacker.\nI:L - The group key is installed in firmware with the wrong protection semantics — flagged as en/decrypting management frames when a non-iGTK group key must not be — so management-frame protection state for the GTK is incorrect, which any group member could attempt to abuse for forged \"protected\" broadcast management frames. This is bounded, not arbitrary, modification.\nA:H - The malformed TKIP+MFP key command asserts the firmware, producing a SW-error dump and a full NIC restart with loss of wireless connectivity, and can be re-triggered on every reconnect attempt for a persistent denial of service. Firmware re-init after such asserts can also fail outright, leaving the adapter unusable until reboot." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/wireless/intel/iwlwifi/mvm/mld-key.c" ], "versions": [ { "version": "5c75a208c2449c6ea24f07610cc052f6a352246c", "lessThan": "b4f1b0b3b91762edd19bf9d3b2e4c3a0740501f8", "status": "affected", "versionType": "git" }, { "version": "5c75a208c2449c6ea24f07610cc052f6a352246c", "lessThan": "40405cbb20eb6541c603e7b3d54ade0a7be9d715", "status": "affected", "versionType": "git" }, { "version": "5c75a208c2449c6ea24f07610cc052f6a352246c", "lessThan": "60f6d5fc84a9fd26528a24d8a267fc6a6698b628", "status": "affected", "versionType": "git" }, { "version": "5c75a208c2449c6ea24f07610cc052f6a352246c", "lessThan": "e35f316bce9e5733c9826120c1838f4c447b2c4c", "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/intel/iwlwifi/mvm/mld-key.c" ], "versions": [ { "version": "6.2", "status": "affected" }, { "version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.23", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.11", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.2", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9", "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": "6.2", "versionEndExcluding": "6.6.23" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.7.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.8.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.9" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/b4f1b0b3b91762edd19bf9d3b2e4c3a0740501f8" }, { "url": "https://git.kernel.org/stable/c/40405cbb20eb6541c603e7b3d54ade0a7be9d715" }, { "url": "https://git.kernel.org/stable/c/60f6d5fc84a9fd26528a24d8a267fc6a6698b628" }, { "url": "https://git.kernel.org/stable/c/e35f316bce9e5733c9826120c1838f4c447b2c4c" } ], "title": "wifi: iwlwifi: mvm: don't set the MFP flag for the GTK", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-27434", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-05-17T17:16:46.787202Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:46:52.503Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:34:52.476Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/b4f1b0b3b91762edd19bf9d3b2e4c3a0740501f8", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/40405cbb20eb6541c603e7b3d54ade0a7be9d715", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/60f6d5fc84a9fd26528a24d8a267fc6a6698b628", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e35f316bce9e5733c9826120c1838f4c447b2c4c", "tags": [ "x_transferred" ] } ] } ] } }