{"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"]}]}]}}