CVE-2026-93803

wifi: libipw: fix key index receive bound checks

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-2026-93803

Published

In the Linux kernel, the following vulnerability has been resolved: wifi: libipw: fix key index receive bound checks libipw_rx() reads skb->data[hdrlen + 3] to extract the WEP key index in both the software-decrypt key selection path and the hardware-decrypted IV/ICV strip path. In both places the existing guard only checks skb->len >= hdrlen + 3, which proves bytes up to hdrlen + 2 but not the byte at hdrlen + 3. Require hdrlen + 4 bytes before reading that item in both paths. This is a local source-boundary check only; it does not change the key index semantics.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-93803

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/intel/ipw2x00/libipw_rx.c"
                    ],
                    "versions": [
                        {
                            "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
                            "lessThan": "bb18262c19feb690ddde58c70e3ad04bc6fe566e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
                            "lessThan": "09d4a1bc3a08bb0e19bdf250b9f575cfef0bae82",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
                            "lessThan": "2836a870f612a8a6d9e390d00fa2cf6c90aa5808",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
                            "lessThan": "0b61c465ea62063593bc9ac186871b69e58ae991",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
                            "lessThan": "062840bdc9ee06169b3c371bf66711f1d7ec0bf4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
                            "lessThan": "c54b643e9a0936d038921c547736574fd7382cea",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
                            "lessThan": "74ed3669f26803b1761c1f55403062bea44c3466",
                            "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/intel/ipw2x00/libipw_rx.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.14",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.14",
                            "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