{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89901","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.774Z","datePublished":"2026-09-16T10:32:00.997Z","dateUpdated":"2026-09-16T10:32:00.997Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-16T10:32:00.997Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: airspy: use vb2_video_unregister_device() on disconnect to fix NULL deref\n\nairspy_disconnect() clears s->udev under v4l2_lock, but\nairspy_stop_streaming() unconditionally calls airspy_ctrl_msg() and\nairspy_free_stream_bufs() afterwards. If a streaming user closes the\ndevice after disconnect, stop_streaming() runs and dereferences the\nNULL s->udev:\n\n  airspy_stop_streaming()\n    airspy_ctrl_msg(s, CMD_RECEIVER_MODE, 0, 0, NULL, 0)\n      usb_sndctrlpipe(s->udev, 0)         /* NULL deref */\n    airspy_free_stream_bufs(s)\n      usb_free_coherent(s->udev, ...)     /* NULL deref */\n\nThe airspy driver uses vb2_fop_release() in its file_operations, so\nreplace video_unregister_device(&s->vdev) with\nvb2_video_unregister_device(&s->vdev) and move it before clearing\ns->udev. vb2_video_unregister_device() releases the vb2 queue, which\nsynchronously runs airspy_stop_streaming() if streaming is active, so\nthe URBs, coherent DMA stream buffers and the hardware stop control\nmessage all execute while s->udev is still valid.\n\nvb2_video_unregister_device() locks vdev->queue->lock (vb_queue_lock)\ninternally, and stop_streaming() locks v4l2_lock, so the previous outer\nmutex_lock(&s->vb_queue_lock) / mutex_lock(&s->v4l2_lock) pair around\nthe unregister sequence would self-deadlock and has been removed. A\nshort v4l2_lock critical section around s->udev = NULL remains so any\nioctl path that still holds the file descriptor sees coherent state.\n\nIssue identified by automated review of the INV-003 series at\nhttps://sashiko.dev/"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/airspy/airspy.c"],"versions":[{"version":"634fe5033951b80ef4b98d8f047cb1083d29170d","lessThan":"c9081e2655188d2d134a741aec837dc70439d505","status":"affected","versionType":"git"},{"version":"634fe5033951b80ef4b98d8f047cb1083d29170d","lessThan":"75089cea32e5055773bd13116236d08fdc98678a","status":"affected","versionType":"git"},{"version":"634fe5033951b80ef4b98d8f047cb1083d29170d","lessThan":"155d0378ae0d6305cc4840583a6b42d2d0595bff","status":"affected","versionType":"git"},{"version":"634fe5033951b80ef4b98d8f047cb1083d29170d","lessThan":"6e4ea90fdc6608cd5fac342e146ab6ae15d430bc","status":"affected","versionType":"git"},{"version":"634fe5033951b80ef4b98d8f047cb1083d29170d","lessThan":"a9a8c37ddda9fa3687b142be9098e1c37b8faf35","status":"affected","versionType":"git"},{"version":"634fe5033951b80ef4b98d8f047cb1083d29170d","lessThan":"297fee023f46d771a844520675692ea089d80d9d","status":"affected","versionType":"git"},{"version":"634fe5033951b80ef4b98d8f047cb1083d29170d","lessThan":"c6749ac8f59cc80eb1b2d52f167fdf13e12655cc","status":"affected","versionType":"git"},{"version":"634fe5033951b80ef4b98d8f047cb1083d29170d","lessThan":"2f378dc45e685fc825d2dd08e7864666d6fcc009","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/airspy/airspy.c"],"versions":[{"version":"3.17","status":"affected"},{"version":"0","lessThan":"3.17","status":"unaffected","versionType":"semver"},{"version":"5.10.270","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.221","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.188","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.157","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.110","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.51","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.5","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","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":"3.17","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/c9081e2655188d2d134a741aec837dc70439d505"},{"url":"https://git.kernel.org/stable/c/75089cea32e5055773bd13116236d08fdc98678a"},{"url":"https://git.kernel.org/stable/c/155d0378ae0d6305cc4840583a6b42d2d0595bff"},{"url":"https://git.kernel.org/stable/c/6e4ea90fdc6608cd5fac342e146ab6ae15d430bc"},{"url":"https://git.kernel.org/stable/c/a9a8c37ddda9fa3687b142be9098e1c37b8faf35"},{"url":"https://git.kernel.org/stable/c/297fee023f46d771a844520675692ea089d80d9d"},{"url":"https://git.kernel.org/stable/c/c6749ac8f59cc80eb1b2d52f167fdf13e12655cc"},{"url":"https://git.kernel.org/stable/c/2f378dc45e685fc825d2dd08e7864666d6fcc009"}],"title":"media: airspy: use vb2_video_unregister_device() on disconnect to fix NULL deref","x_generator":{"engine":"bippy-1.2.0"}}}}