{
    "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"
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            ],
            "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",
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}