{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43290","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-01T14:12:55.999Z","datePublished":"2026-05-08T13:11:14.646Z","dateUpdated":"2026-08-05T12:27:05.626Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T12:27:05.626Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: uvcvideo: Return queued buffers on start_streaming() failure\n\nReturn buffers if streaming fails to start due to uvc_pm_get() error.\n\nThis bug may be responsible for a warning I got running\n\n    while :; do yavta -c3 /dev/video0; done\n\non an xHCI controller which failed under this workload.\nI had no luck reproducing this warning again to confirm.\n\nxhci_hcd 0000:09:00.0: HC died; cleaning up\nusb 13-2: USB disconnect, device number 2\nWARNING: CPU: 2 PID: 29386 at drivers/media/common/videobuf2/videobuf2-core.c:1803 vb2_start_streaming+0xac/0x120"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The vulnerable path is reached through local V4L2 ioctls such as VIDIOC_REQBUFS, VIDIOC_QBUF, and VIDIOC_STREAMON on a UVC /dev/video node. Although the device is USB-backed, the triggering interface is a local device-file ioctl path.\nAC:L - There is no race or probabilistic timing requirement in the cleanup bug; once start_streaming fails, the stale queued-buffer state is deterministic. A controlled failing/disconnecting UVC device or repeated stream-start attempts can trigger the path.\nPR:L - The attacker needs permission to open and issue ioctls on the video device node, but no kernel capability or administrative privilege is checked in the UVC/V4L2 path. This is basic local device access.\nUI:N - A local attacker can perform the required ioctl sequence directly without requiring another user to take action. The vulnerable cleanup occurs in the attacker’s own stream-start attempt.\nS:U - The vulnerability affects kernel media/USB buffer management within the same security authority. It does not inherently cross a VM, IOMMU, or other separate security boundary.\nC:H - The missed UVC buffer return can leave stale driver-private irqqueue entries after vb2 force-reclaims buffers, creating a plausible use-after-free/list-corruption condition. Under the scoring rule for memory corruption and uncertainty, confidentiality impact is High.\nI:H - The stale buffer/list state can lead to kernel memory corruption when the queue is later reused or cancelled. Under the required conservative scoring, this is treated as potentially exploitable for arbitrary modification/control-flow impact.\nA:H - The known manifestation is a kernel WARN in videobuf2, and the stale queue state can progress to list corruption, UAF, oops, or panic on affected systems. This supports High availability impact."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/uvc/uvc_queue.c"],"versions":[{"version":"7dd56c47784a466b03df62ca766207f483353cdc","lessThan":"69c32df23bed6001864779b965fa009bcd9a26de","status":"affected","versionType":"git"},{"version":"7dd56c47784a466b03df62ca766207f483353cdc","lessThan":"a5c01f15809d1d2c319d8bfb11d071df11ab731c","status":"affected","versionType":"git"},{"version":"7dd56c47784a466b03df62ca766207f483353cdc","lessThan":"4cf3b6fd54ebb1ebc977bdc47fb6cfcf9a471a22","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/uvc/uvc_queue.c"],"versions":[{"version":"6.17","status":"affected"},{"version":"0","lessThan":"6.17","status":"unaffected","versionType":"semver"},{"version":"6.18.16","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.6","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","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":"6.17","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/69c32df23bed6001864779b965fa009bcd9a26de"},{"url":"https://git.kernel.org/stable/c/a5c01f15809d1d2c319d8bfb11d071df11ab731c"},{"url":"https://git.kernel.org/stable/c/4cf3b6fd54ebb1ebc977bdc47fb6cfcf9a471a22"}],"title":"media: uvcvideo: Return queued buffers on start_streaming() failure","x_generator":{"engine":"bippy-1.2.0"}}}}