{ "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" } } } }