222 lines
12 KiB
JSON
222 lines
12 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-2026-68210",
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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": "2026-08-10T12:00:29.515Z",
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"dateUpdated": "2026-08-19T16:31:34.517Z"
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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": "2026-08-19T16:31:34.517Z"
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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: stm32: dcmi: unregister notifier on probe failure\n\ndcmi_graph_init() registers the async notifier before dcmi_probe() toggles\nthe reset line. If reset_control_assert() or reset_control_deassert()\nfails afterwards, probe returns through err_cleanup and the driver core\nwill not call dcmi_remove().\n\nUnregister the notifier before cleaning it up on that error path,\nmatching the successful remove path and the V4L2 async notifier lifetime\nrules.\n\n[hverkuil: added Fixes tag]"
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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 affected code is a platform camera-interface driver probe path on STM32 SoCs; it is reached only through local device/driver binding on the machine itself, with the resulting dangling notifier consumed by in-kernel V4L2 subdev registration. No network or remote data path reaches this code.\nAC:L - Once the driver has probe-failed on the reset line, the stale notifier remains on the global v4l2 notifier_list indefinitely, and any subsequent subdev registration deterministically walks the freed object; no race or unpredictable memory layout must be won to reach the freed dereference.\nPR:L - A local user account on the device is sufficient to interact with the media/V4L2 stack and trigger subdev registration paths that walk the corrupted global notifier list; no root or administrative capability is needed to consume the dangling pointer.\nUI:N - The stale notifier is left behind automatically by the failing probe path and is dereferenced by kernel-internal V4L2 async registration; no victim action such as opening a file or mounting a filesystem is required.\nS:U - The freed memory, the corrupted list, and the resulting impact are all within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The devm-allocated stm32_dcmi object containing the notifier is freed while still linked into the global notifier_list, so reallocated heap contents are read back as notifier state and traversed as list pointers, which can be leveraged to disclose kernel memory.\nI:H - Traversal and eventual list_del of the freed notifier_entry performs writes through attacker-influenceable heap contents, giving a use-after-free list-corruption primitive that can be shaped into an arbitrary write and control-flow hijack.\nA:H - Dereferencing and unlinking a freed notifier from the global list reliably produces list corruption and an oops or panic in the V4L2 async core, taking down 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/st/stm32/stm32-dcmi.c"
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],
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"versions": [
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{
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"version": "d079f94c90469f413920b9f2b201537fac2ceb06",
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"lessThan": "222a9301b086852b90d3b092fef436c3f4e927c4",
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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": "d079f94c90469f413920b9f2b201537fac2ceb06",
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"lessThan": "37ff63c5d7119cbc5c6bacdcc658add6008a8e1f",
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"status": "affected",
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"versionType": "git"
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},
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"lessThan": "6c6f22b7e6cbc4e8c1e359fc9b190419391c3db7",
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"status": "affected",
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},
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"version": "d079f94c90469f413920b9f2b201537fac2ceb06",
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"lessThan": "931abe1deb65b919d23fa203d7f6d6fbd4fccd8e",
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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": "d079f94c90469f413920b9f2b201537fac2ceb06",
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"lessThan": "4b7ee504969e074725e439c949f2483e5fa5572a",
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"status": "affected",
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{
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"status": "affected",
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}
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]
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},
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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/st/stm32/stm32-dcmi.c"
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],
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"versions": [
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{
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"version": "4.20",
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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": "4.20",
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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": "6.1.183",
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"lessThanOrEqual": "6.1.*",
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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": "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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"nodes": [
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"negate": false,
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.20",
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"versionEndExcluding": "6.1.183"
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/222a9301b086852b90d3b092fef436c3f4e927c4"
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},
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{
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"url": "https://git.kernel.org/stable/c/37ff63c5d7119cbc5c6bacdcc658add6008a8e1f"
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},
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{
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"url": "https://git.kernel.org/stable/c/6c6f22b7e6cbc4e8c1e359fc9b190419391c3db7"
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},
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{
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"url": "https://git.kernel.org/stable/c/931abe1deb65b919d23fa203d7f6d6fbd4fccd8e"
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},
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{
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"url": "https://git.kernel.org/stable/c/4b7ee504969e074725e439c949f2483e5fa5572a"
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},
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{
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"url": "https://git.kernel.org/stable/c/084973ebd67b28f0945c5d45408f86c58b540110"
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}
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],
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"title": "media: stm32: dcmi: unregister notifier on probe failure",
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"x_generator": {
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"engine": "bippy-1.2.0"
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