{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-93784",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-18T17:59:28.788Z",
        "datePublished": "2026-09-24T16:02:18.067Z",
        "dateUpdated": "2026-10-03T10:57:19.164Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-03T10:57:19.164Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: validate IEs in cfg80211_wext_siwgenie()\n\nThe KASAN allocation trace shows that a malformed IE buffer is\nstored via SIOCSIWGENIE (cfg80211_wext_siwgenie()) without any\nvalidation. The crash trace shows that a subsequent SIOCSIWESSID\ntriggers a connection attempt which calls cfg80211_sme_get_conn_ies()\nto process the stored IE buffer, causing:\n\n - An out-of-bounds read in skip_ie() which reads ies[pos+1]\n   (the length byte) past the end of the 1-byte buffer.\n\n - An integer underflow in the memcpy size argument when offs\n   returned by ieee80211_ie_split() exceeds ies_len, causing\n   unsigned subtraction to wrap to SIZE_MAX and triggering a\n   fortify panic.\n\nFix this by validating the IE buffer in cfg80211_wext_siwgenie()\nbefore storing it.\n\n[drop unnecessary ie_len check, update commit message]"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/wireless/wext-sme.c"
                    ],
                    "versions": [
                        {
                            "version": "f21293549f60f88c74fcb9944737f11048896dc4",
                            "lessThan": "269498ce6c1e2132b072aa0c8660404926008f03",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f21293549f60f88c74fcb9944737f11048896dc4",
                            "lessThan": "685082f4be77f4657b498ebbe9f942ef65c492cf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f21293549f60f88c74fcb9944737f11048896dc4",
                            "lessThan": "8b921a8993469a3482e0c67b5ce5cb6ce93f5f61",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f21293549f60f88c74fcb9944737f11048896dc4",
                            "lessThan": "d01f1600e8b075aa17adb751ac9881bb6ee40dcc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f21293549f60f88c74fcb9944737f11048896dc4",
                            "lessThan": "c970879e03b23a27df42caf7ba506485a165fb96",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f21293549f60f88c74fcb9944737f11048896dc4",
                            "lessThan": "01cc395cecfaa73134d39fb9a401d9605d8bb2c5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f21293549f60f88c74fcb9944737f11048896dc4",
                            "lessThan": "a2f5286ca4f304d3fd469f01b96b518608912a5c",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/wireless/wext-sme.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.32",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.32",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.111",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.53",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "2.6.32",
                                    "versionEndExcluding": "5.10.271"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "5.15.222"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.1.189"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.6.158"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.12.111"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.18.53"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/269498ce6c1e2132b072aa0c8660404926008f03"
                },
                {
                    "url": "https://git.kernel.org/stable/c/685082f4be77f4657b498ebbe9f942ef65c492cf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8b921a8993469a3482e0c67b5ce5cb6ce93f5f61"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d01f1600e8b075aa17adb751ac9881bb6ee40dcc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c970879e03b23a27df42caf7ba506485a165fb96"
                },
                {
                    "url": "https://git.kernel.org/stable/c/01cc395cecfaa73134d39fb9a401d9605d8bb2c5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a2f5286ca4f304d3fd469f01b96b518608912a5c"
                }
            ],
            "title": "wifi: cfg80211: validate IEs in cfg80211_wext_siwgenie()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}