{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98837",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.372Z",
        "datePublished": "2026-10-18T15:50:05.338Z",
        "dateUpdated": "2026-10-21T12:57:23.170Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:57:23.170Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: caiaq: unregister the input device when probe fails\n\nsetup_card() registers the input device, whose name and phys point into\nstruct snd_usb_caiaqdev, and then goes on to snd_card_register() and\nsnd_usb_caiaq_control_init(). If either fails, snd_probe() calls\nsnd_card_free(), which frees the device state but leaves the input\ndevice registered: card_free() only clears the pointer, and the input\ndevice is unregistered from snd_disconnect() alone. Reading its \"uevent\"\nattribute afterwards dereferences freed memory:\n\n  BUG: KASAN: slab-use-after-free in string+0x4a9/0x4f0\n  Read of size 1 at addr ffff8880208f5043 by task caiaq/4967\n   add_uevent_var+0x183/0x3a0\n   input_dev_uevent+0x162/0x900\n   dev_uevent+0x2f1/0x870\n   uevent_show+0x1ca/0x3a0\n   ...\n\nUnregister the input device on the probe error path, as\nsnd_disconnect() does. snd_usb_caiaq_input_disconnect() is a no-op when\nno input device was registered.\n\nReproduced with a raw-gadget Audio Kontrol 1 and a temporary hack that\nmakes snd_usb_caiaq_control_init() fail."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "sound/usb/caiaq/device.c"
                    ],
                    "versions": [
                        {
                            "version": "f537e3ad69609f6924a4db6b4a7f6561f5288bdd",
                            "lessThan": "df2787819bd137111b56b8631dd581b0cce7144d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6251e3e256337a30160ef59ab1580dde4d1acd28",
                            "lessThan": "850810c12686f80cdf7530f4f21e0157d904f739",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056",
                            "lessThan": "84727facd8506140cd04f2b0a8b1c4ddeac41cea",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "28abd224db4a49560b452115bca3672a20e45b2f",
                            "lessThan": "2e5a413cc2a489c9427ecd3d73ad764bfb0c7103",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "28abd224db4a49560b452115bca3672a20e45b2f",
                            "lessThan": "0b7bd20f6379bc5e431fd74d866390f5b5b63f3c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "da938aa9fc7826901921dcea225948ab21a97e45",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "09616e25f502080ba684fc7fcf959d1376ab756d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b956e48371f2ff72b76be9a829800ecec963bd45",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "096dd8519cf2f768e9e14f224b627f7aaee1a9c5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.6.140",
                            "lessThan": "6.6.160",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.86",
                            "lessThan": "6.12.113",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.27",
                            "lessThan": "6.18.56",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.258",
                            "lessThan": "5.11",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.209",
                            "lessThan": "5.16",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.175",
                            "lessThan": "6.2",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.4",
                            "lessThan": "7.1",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "sound/usb/caiaq/device.c"
                    ],
                    "versions": [
                        {
                            "version": "7.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "7.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.113",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.56",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.10",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "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": "6.6.140",
                                    "versionEndExcluding": "6.6.160"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                {
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                                    "versionStartIncluding": "7.0.4"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/df2787819bd137111b56b8631dd581b0cce7144d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/850810c12686f80cdf7530f4f21e0157d904f739"
                },
                {
                    "url": "https://git.kernel.org/stable/c/84727facd8506140cd04f2b0a8b1c4ddeac41cea"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2e5a413cc2a489c9427ecd3d73ad764bfb0c7103"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0b7bd20f6379bc5e431fd74d866390f5b5b63f3c"
                }
            ],
            "title": "ALSA: caiaq: unregister the input device when probe fails",
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    }
}