{"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"}}}}