475 lines
23 KiB
JSON
475 lines
23 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"cveMetadata": {
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"cveId": "CVE-2024-35830",
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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": "2024-05-17T12:19:12.348Z",
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"datePublished": "2024-05-17T13:41:19.675Z",
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"dateUpdated": "2026-10-15T00:41:00.750Z"
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"dateUpdated": "2026-08-05T11:30:11.254Z"
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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: tc358743: register v4l2 async device only after successful setup\n\nEnsure the device has been setup correctly before registering the v4l2\nasync device, thus allowing userspace to access."
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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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{
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"lang": "en",
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"value": "AV:L - The vulnerable code is reached through `ioctl()` on the `/dev/v4l-subdev*` character device node created by `v4l2_device_register_subdev_nodes()`, so the attacker needs local system access. No network, RF, or physical-bus path reaches these subdev ops.\nAC:L - The attacker controls their side of the race entirely and can spin on `open()`/`ioctl()`; the node becomes visible the moment `v4l2_async_register_subdev()` returns while probe still has tens of milliseconds of I²C register programming, CEC adapter allocation, and IRQ setup left to run, making the window large and reliably winnable.\nPR:L - Only an open file descriptor on the V4L2 subdev node is needed — `VIDIOC_SUBDEV_S_FMT`, `S_EDID`, and `S_DV_TIMINGS` have no capability check (only `VIDIOC_DBG_*` gate on `CAP_SYS_ADMIN`), and these nodes are routinely accessible to unprivileged users via the `video` group, logind uaccess ACLs, or the Android camera/media UID.\nUI:N - No victim action is required; the attacker acts alone against a driver probe that occurs as a normal system event at boot or module load.\nS:U - The corrupted objects — the `tc358743_state` mutex, the delayed work/timer, and the freed subdev — are all ordinary kernel memory in the same security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - Use of the uninitialized `confctl_mutex` and `delayed_work`/`timer_list`, plus the dangling `v4l2_subdev` left registered on the global `subdev_list` after a devm-freed probe failure, give memory-corruption and use-after-free primitives over kernel slab memory that can be groomed into an arbitrary kernel read.\nI:H - `INIT_DELAYED_WORK()` re-initializing a timer already linked into the timer base's hlist, `mutex_init()` racing a live waiter, and dereferencing `sd->ops` from freed memory all yield controlled writes and control-flow hijack potential; on affected trees lacking the `WARN_ON_ONCE(!fn)` guard, `expire_timers()` calls a NULL function pointer outright.\nA:H - The immediate and easily reproduced outcome is a kernel oops or panic — NULL-pointer write via `list_add_tail()` on the zeroed `wait_list`, `WARN_ON(!work->func)` in `__flush_work()` (panic under `panic_on_warn`), timer-base list corruption, or a use-after-free crash."
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|
|
"defaultStatus": "unknown"
|
|
},
|
|
{
|
|
"vendor": "Siemens",
|
|
"product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
|
|
"versions": [
|
|
{
|
|
"status": "affected",
|
|
"version": "V3.1.0",
|
|
"lessThan": "V3.1.5",
|
|
"versionType": "custom"
|
|
}
|
|
],
|
|
"defaultStatus": "unknown"
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
},
|
|
"dataVersion": "5.2"
|
|
} |