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vuln-cve/data/2026/98xxx/CVE-2026-98837.json
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{
"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": "2026-10-30T12:40:06.606Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-10-30T12:40:06.606Z"
},
"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": "da938aa9fc7826901921dcea225948ab21a97e45",
"lessThan": "7017c9dda1ebbab428a6fd29c841596b5c9c84d1",
"status": "affected",
"versionType": "git"
},
{
"version": "09616e25f502080ba684fc7fcf959d1376ab756d",
"lessThan": "8315ea07ebb2497531ff42dd640396f6f1d4a8f0",
"status": "affected",
"versionType": "git"
},
{
"version": "b956e48371f2ff72b76be9a829800ecec963bd45",
"lessThan": "1d5d194594ff616ad36a052bde739d1cf5855b95",
"status": "affected",
"versionType": "git"
},
{
"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": "096dd8519cf2f768e9e14f224b627f7aaee1a9c5",
"status": "affected",
"versionType": "git"
},
{
"version": "5.10.258",
"lessThan": "5.10.273",
"status": "affected",
"versionType": "semver"
},
{
"version": "5.15.209",
"lessThan": "5.15.224",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.1.175",
"lessThan": "6.1.191",
"status": "affected",
"versionType": "semver"
},
{
"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": "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": "5.10.273",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.224",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
"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": "5.10.258",
"versionEndExcluding": "5.10.273"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.15.209",
"versionEndExcluding": "5.15.224"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.1.175",
"versionEndExcluding": "6.1.191"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.6.140",
"versionEndExcluding": "6.6.160"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.12.86",
"versionEndExcluding": "6.12.113"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.18.27",
"versionEndExcluding": "6.18.56"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "7.1",
"versionEndExcluding": "7.2.10"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "7.1",
"versionEndExcluding": "7.3"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "7.0.4"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/7017c9dda1ebbab428a6fd29c841596b5c9c84d1"
},
{
"url": "https://git.kernel.org/stable/c/8315ea07ebb2497531ff42dd640396f6f1d4a8f0"
},
{
"url": "https://git.kernel.org/stable/c/1d5d194594ff616ad36a052bde739d1cf5855b95"
},
{
"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",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
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