{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50709",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-24T10:53:15.518Z",
        "datePublished": "2025-12-24T10:55:23.194Z",
        "dateUpdated": "2026-05-11T19:23:58.844Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:23:58.844Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg()\n\nsyzbot is reporting uninit value at ath9k_htc_rx_msg() [1], for\nioctl(USB_RAW_IOCTL_EP_WRITE) can call ath9k_hif_usb_rx_stream() with\npkt_len = 0 but ath9k_hif_usb_rx_stream() uses\n__dev_alloc_skb(pkt_len + 32, GFP_ATOMIC) based on an assumption that\npkt_len is valid. As a result, ath9k_hif_usb_rx_stream() allocates skb\nwith uninitialized memory and ath9k_htc_rx_msg() is reading from\nuninitialized memory.\n\nSince bytes accessed by ath9k_htc_rx_msg() is not known until\nath9k_htc_rx_msg() is called, it would be difficult to check minimal valid\npkt_len at \"if (pkt_len > 2 * MAX_RX_BUF_SIZE) {\" line in\nath9k_hif_usb_rx_stream().\n\nWe have two choices. One is to workaround by adding __GFP_ZERO so that\nath9k_htc_rx_msg() sees 0 if pkt_len is invalid. The other is to let\nath9k_htc_rx_msg() validate pkt_len before accessing. This patch chose\nthe latter.\n\nNote that I'm not sure threshold condition is correct, for I can't find\ndetails on possible packet length used by this protocol."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/wireless/ath/ath9k/htc_hst.c"
                    ],
                    "versions": [
                        {
                            "version": "fb9987d0f748c983bb795a86f47522313f701a08",
                            "lessThan": "f3d2a3b7e290d0bdbddfcee5a6c3d922e2b7e02a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fb9987d0f748c983bb795a86f47522313f701a08",
                            "lessThan": "84242f15f911f34aec9b22f99d1e9bff19723dbe",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fb9987d0f748c983bb795a86f47522313f701a08",
                            "lessThan": "2c485f4f2a64258acc5228e78ffb828c68d9e770",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fb9987d0f748c983bb795a86f47522313f701a08",
                            "lessThan": "9661724f6206bd606ecf13acada676a9975d230b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fb9987d0f748c983bb795a86f47522313f701a08",
                            "lessThan": "b1b4144508adfc585e43856b31baaf9008a3beb4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fb9987d0f748c983bb795a86f47522313f701a08",
                            "lessThan": "0d2649b288b7b9484e3d4380c0d6c4720a17e473",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fb9987d0f748c983bb795a86f47522313f701a08",
                            "lessThan": "4891a50f5ed8bfcb8f2a4b816b0676f398687783",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fb9987d0f748c983bb795a86f47522313f701a08",
                            "lessThan": "b383e8abed41cc6ff1a3b34de75df9397fa4878c",
                            "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/ath/ath9k/htc_hst.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.35",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.35",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.296",
                            "lessThanOrEqual": "4.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.262",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.220",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.150",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.75",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19.17",
                            "lessThanOrEqual": "5.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.3",
                            "lessThanOrEqual": "6.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1",
                            "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": "2.6.35",
                                    "versionEndExcluding": "4.14.296"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "4.19.262"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "5.10.150"
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                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "5.15.75"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "5.19.17"
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "6.0.3"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.35",
                                    "versionEndExcluding": "6.1"
                                }
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/f3d2a3b7e290d0bdbddfcee5a6c3d922e2b7e02a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/84242f15f911f34aec9b22f99d1e9bff19723dbe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2c485f4f2a64258acc5228e78ffb828c68d9e770"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9661724f6206bd606ecf13acada676a9975d230b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b1b4144508adfc585e43856b31baaf9008a3beb4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0d2649b288b7b9484e3d4380c0d6c4720a17e473"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4891a50f5ed8bfcb8f2a4b816b0676f398687783"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b383e8abed41cc6ff1a3b34de75df9397fa4878c"
                }
            ],
            "title": "wifi: ath9k: avoid uninit memory read in ath9k_htc_rx_msg()",
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    }
}