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vuln-cve/data/2026/98xxx/CVE-2026-98006.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-98006",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-09-25T10:19:56.068Z",
"datePublished": "2026-09-25T10:23:32.334Z",
"dateUpdated": "2026-10-19T09:12:11.824Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-10-19T09:12:11.824Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: caiaq: Decoupling ep1_in_urb in caiaq dev\n\nThe epq_in_urb object belonging to the caiaq device is coupled within\nthe struct snd_usb_caiaqdev. After usb_submit_urb(epq_in_urb, GFP_KERNEL)\nexecutes successfully, epq_in_urb is successfully added to the urbp_list\nqueue of the dummy HCD driver (userspace specifies dummy_hcd as the HCD\nlayer driver for the caiaq USB device).\n\nWhen init_card() calls snd_usb_caiaq_send_command() which subsequently\nfails due to a timeout, and proceeds to call snd_card_free() to release\nthe card, the embedded ep1_in_urb object is also freed. When the dummy\nHCD driver detects that the URB has been unlinked, it returns the URB\n(by usb_hcd_giveback_urb()), which triggers [1].\n\nDecouple the ep1_in_urb object from the struct snd_usb_caiaqdev and switch\nto using a pointer instead. Separately allocate and manage the memory for\nep1_in_urb to prevent the release of the snd_card memory object from\ninterfering with it.\n\nmidi_out_urb has the same issue as ep1_in_urb and is handled in the same\nway.\n\n[1]\nBUG: KASAN: slab-use-after-free in usb_free_urb+0x24/0x120 drivers/usb/core/urb.c:96\nWrite of size 4 at addr ffff88803cee1050 by task ktimers/1/29\nCall Trace:\n usb_free_urb+0x24/0x120 drivers/usb/core/urb.c:96\n dummy_timer+0xaac/0x4d50 drivers/usb/gadget/udc/dummy_hcd.c:2019\n __run_hrtimer kernel/time/hrtimer.c:2067 [inline]\n __hrtimer_run_queues+0x3eb/0xaf0 kernel/time/hrtimer.c:2124\n hrtimer_run_softirq+0x1e1/0x2e0 kernel/time/hrtimer.c:2141\n\nAllocated by task 36:\n snd_card_new+0x7b/0x110 sound/core/init.c:184\n create_card sound/usb/caiaq/device.c:429 [inline]\n snd_probe+0x236/0x1af0 sound/usb/caiaq/device.c:544\n\nFreed by task 36:\n snd_card_free_when_closed sound/core/init.c:630 [inline]\n snd_card_free+0x138/0x1d0 sound/core/init.c:662\n snd_probe+0x162b/0x1af0 sound/usb/caiaq/device.c:553"
}
],
"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",
"sound/usb/caiaq/device.h",
"sound/usb/caiaq/midi.c"
],
"versions": [
{
"version": "523f1dce37434a9a6623bf46e7893e2b4b10ac3c",
"lessThan": "a3bbd2845bc7188ae18548a591da1067af997e80",
"status": "affected",
"versionType": "git"
},
{
"version": "523f1dce37434a9a6623bf46e7893e2b4b10ac3c",
"lessThan": "fbfbad728da2e95d6560e43266895de5c8e844b3",
"status": "affected",
"versionType": "git"
},
{
"version": "523f1dce37434a9a6623bf46e7893e2b4b10ac3c",
"lessThan": "dbd3effcbdb85394d3c4bd5ee9df785a44303333",
"status": "affected",
"versionType": "git"
},
{
"version": "523f1dce37434a9a6623bf46e7893e2b4b10ac3c",
"lessThan": "671037b282eb7fe477136bd0130ffd9029eb8668",
"status": "affected",
"versionType": "git"
},
{
"version": "523f1dce37434a9a6623bf46e7893e2b4b10ac3c",
"lessThan": "d6dd3c915b0d02457711d8fbaa60efc52144557f",
"status": "affected",
"versionType": "git"
},
{
"version": "523f1dce37434a9a6623bf46e7893e2b4b10ac3c",
"lessThan": "0c1b907d5db2f3508375776e5b78d69591aa5626",
"status": "affected",
"versionType": "git"
},
{
"version": "523f1dce37434a9a6623bf46e7893e2b4b10ac3c",
"lessThan": "d41e6c1533f09b27fc562260d41417490d2b6084",
"status": "affected",
"versionType": "git"
},
{
"version": "523f1dce37434a9a6623bf46e7893e2b4b10ac3c",
"lessThan": "402a9d6aab7ac787ab075adeb562c3db8b8f564b",
"status": "affected",
"versionType": "git"
}
]
},
{
"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",
"sound/usb/caiaq/device.h",
"sound/usb/caiaq/midi.c"
],
"versions": [
{
"version": "2.6.22",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.22",
"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": "7.2.7",
"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": "2.6.22",
"versionEndExcluding": "5.10.271"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.22",
"versionEndExcluding": "5.15.222"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.22",
"versionEndExcluding": "6.1.189"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.22",
"versionEndExcluding": "6.6.158"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.22",
"versionEndExcluding": "6.12.111"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.22",
"versionEndExcluding": "6.18.53"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.22",
"versionEndExcluding": "7.2.7"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.22",
"versionEndExcluding": "7.3"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/a3bbd2845bc7188ae18548a591da1067af997e80"
},
{
"url": "https://git.kernel.org/stable/c/fbfbad728da2e95d6560e43266895de5c8e844b3"
},
{
"url": "https://git.kernel.org/stable/c/dbd3effcbdb85394d3c4bd5ee9df785a44303333"
},
{
"url": "https://git.kernel.org/stable/c/671037b282eb7fe477136bd0130ffd9029eb8668"
},
{
"url": "https://git.kernel.org/stable/c/d6dd3c915b0d02457711d8fbaa60efc52144557f"
},
{
"url": "https://git.kernel.org/stable/c/0c1b907d5db2f3508375776e5b78d69591aa5626"
},
{
"url": "https://git.kernel.org/stable/c/d41e6c1533f09b27fc562260d41417490d2b6084"
},
{
"url": "https://git.kernel.org/stable/c/402a9d6aab7ac787ab075adeb562c3db8b8f564b"
}
],
"title": "ALSA: caiaq: Decoupling ep1_in_urb in caiaq dev",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
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