{"schema":"threatline.record/2","record":{"id":"CVE-2026-98006","aliases":[],"summary":"ALSA: caiaq: Decoupling ep1_in_urb in caiaq dev","details":"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","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98006","source_modified_at":"2026-10-19T09:12:11.824Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","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"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98006","source_modified_at":"2026-10-19T09:12:11.824Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","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"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98006","source_modified_at":"2026-10-19T09:12:11.824Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"671037b282eb7fe477136bd0130ffd9029eb8668","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98006","source_modified_at":"2026-10-19T09:12:11.824Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"0c1b907d5db2f3508375776e5b78d69591aa5626","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98006","source_modified_at":"2026-10-19T09:12:11.824Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"402a9d6aab7ac787ab075adeb562c3db8b8f564b","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00176,"percentile":0.06842,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:23:32.334Z","modified_at":"2026-10-19T09:12:11.824Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98006","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:12:11.824Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98006","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/a3bbd2845bc7188ae18548a591da1067af997e80"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/fbfbad728da2e95d6560e43266895de5c8e844b3"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/dbd3effcbdb85394d3c4bd5ee9df785a44303333"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/671037b282eb7fe477136bd0130ffd9029eb8668"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d6dd3c915b0d02457711d8fbaa60efc52144557f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/0c1b907d5db2f3508375776e5b78d69591aa5626"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d41e6c1533f09b27fc562260d41417490d2b6084"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/402a9d6aab7ac787ab075adeb562c3db8b8f564b"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:12:11.824Z","content_hash":"83072397c96ea36e14e8c4e8fd4383f121910c0c293d385e8f80979f2d3cf762"}}