205 lines
11 KiB
JSON
205 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-68219",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-07-30T09:28:09.375Z",
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"datePublished": "2026-08-10T12:00:39.405Z",
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"dateUpdated": "2026-08-17T05:01:05.813Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-17T05:01:05.813Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: nxp: imx8-isi: Fix potential out-of-bounds issues\n\nThe maximum downscaling factor supported by ISI can be up to 16. Add\nminimum value constraint before applying the setting to hardware.\nOtherwise, the process will not respond even when Ctrl+C is executed."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerability is reached exclusively through V4L2 ioctls (VIDIOC_S_FMT on the /dev/videoX M2M node, or VIDIOC_SUBDEV_S_SELECTION on the ISI pipe subdev), which require local access to the device node. There is no remote or adjacent-network path into the imx8-isi driver.\nAC:L - Exploitation is a deterministic ioctl sequence: set a large OUTPUT format, set a 1x1 CAPTURE format (accepted because the bound was only min() against the source size and MXC_ISI_MIN_WIDTH/HEIGHT = 1), queue buffers and stream. No race, timing window, or uncontrollable memory-layout condition is involved.\nPR:L - The attacker only needs to open the ISI video device node; no capability check exists anywhere along the path from the ioctl handler to mxc_isi_channel_set_scaling(). On the i.MX8 embedded, automotive and vision devices where this driver runs, /dev/video* is routinely accessible to ordinary unprivileged applications via the video/camera group.\nUI:N - The attacking process performs the entire sequence itself — open, S_FMT, REQBUFS, QBUF, STREAMON — with no victim action, no separate privileged process, and no administrator step required.\nS:U - The corruption and the hang stay within the kernel of the same machine; the ISI DMA write targets kernel memory adjacent to the video buffer and does not cross a VM, hypervisor or IOMMU security boundary.\nC:H - The scaler saturates at a 16x factor while the destination buffer and CHNL_OUT_BUF_PITCH are sized from the far smaller requested format, so the ISI DMA engine overruns the video buffer into adjacent kernel memory; such heap corruption in DMA-able memory is leverageable to disclose kernel memory contents, and stale buffer content is returned to userspace.\nI:H - The hardware writes an image much larger than the allocated destination buffer, producing an out-of-bounds DMA write whose contents are the attacker's own input frame in M2M mode — an attacker-controlled overwrite of kernel memory following the buffer, sufficient for control-flow-relevant corruption.\nA:H - The fix commit states the transaction never completes and \"the process will not respond even when Ctrl+C is executed\", leaving an unkillable task and a wedged ISI channel that denies the imaging pipeline to all users; the accompanying out-of-bounds DMA write can additionally panic the kernel."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h",
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"drivers/media/platform/nxp/imx8-isi/imx8-isi-m2m.c",
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"drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.c"
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],
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"versions": [
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{
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"version": "cf21f328fcafacf4f96e7a30ef9dceede1076378",
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"lessThan": "690cdda752f3dc6b7a8b2d4a243e0207b66a1f37",
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"status": "affected",
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"versionType": "git"
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},
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"lessThan": "ba7e1b06cbdad3b7c3314390cca22aff42f655d4",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "cf21f328fcafacf4f96e7a30ef9dceede1076378",
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"lessThan": "28ae75dba701d7aa69a36802c398582933d3e0e6",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "cf21f328fcafacf4f96e7a30ef9dceede1076378",
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"lessThan": "75cdfaa7c908ca06d564170da9c80fb579f149a5",
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"status": "affected",
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"versionType": "git"
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{
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"lessThan": "57a7ec5c9f38ce6c4d6209c4b75c8e57e1fea6cf",
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/media/platform/nxp/imx8-isi/imx8-isi-core.h",
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"drivers/media/platform/nxp/imx8-isi/imx8-isi-m2m.c",
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"drivers/media/platform/nxp/imx8-isi/imx8-isi-pipe.c"
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],
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"versions": [
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{
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"version": "6.4",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.4",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.148",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.101",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.42",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.6",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/690cdda752f3dc6b7a8b2d4a243e0207b66a1f37"
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},
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{
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"url": "https://git.kernel.org/stable/c/ba7e1b06cbdad3b7c3314390cca22aff42f655d4"
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},
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{
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"url": "https://git.kernel.org/stable/c/28ae75dba701d7aa69a36802c398582933d3e0e6"
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}
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],
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"title": "media: nxp: imx8-isi: Fix potential out-of-bounds issues",
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