{"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":"2026-10-03T11:01:26.046Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-03T11:01:26.046Z"},"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-rc3","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-rc3"}]}]}],"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"}}}}