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CVE-2026-93807

wifi: rsi: avoid reading TKIP MIC keys for non-TKIP ciphers

cve-program · severity unknownCVSS unknownCheck source for fixed versionsKEV status unknown
Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-93807

Published

In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: avoid reading TKIP MIC keys for non-TKIP ciphers rsi_hal_load_key() copies tx_mic_key and rx_mic_key from data[16] and data[24] whenever key data is present. Those offsets are only part of the 32-byte TKIP key layout. Shorter keys used by other ciphers, such as CCMP, do not provide those bytes, so the unconditional copies can read past the supplied key buffer. Only copy the MIC keys for TKIP, and reject malformed TKIP keys that are shorter than the expected 32-byte layout. [drop useless length check]

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-93807

Published

Linux

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/rsi/rsi_91x_mgmt.c"
                    ],
                    "versions": [
                        {
                            "version": "dad0d04fa7ba41ce603a01e8e64967650303e9a2",
                            "lessThan": "6937b06d55b528e961feff8cc083b97ede622e02",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dad0d04fa7ba41ce603a01e8e64967650303e9a2",
                            "lessThan": "ebd7172f8c4edc232738ef50338fb773c6f6c208",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dad0d04fa7ba41ce603a01e8e64967650303e9a2",
                            "lessThan": "6b6690ac5c35e803df14afdc44312d11e8a60893",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dad0d04fa7ba41ce603a01e8e64967650303e9a2",
                            "lessThan": "5207727e53fba1e3a6fce9b2c15b6b8b06c6438b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dad0d04fa7ba41ce603a01e8e64967650303e9a2",
                            "lessThan": "5902e3c08c63d65724772f74d65b9fb032625dca",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dad0d04fa7ba41ce603a01e8e64967650303e9a2",
                            "lessThan": "55b86ef6c2e68879ffd95203b011ef42a013ab88",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dad0d04fa7ba41ce603a01e8e64967650303e9a2",
                            "lessThan": "843fe9bc583b7686ca68312ac9319c9240a73c03",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

Linux

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/rsi/rsi_91x_mgmt.c"
                    ],
                    "versions": [
                        {
                            "version": "3.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.15",
                            "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"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

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