248 lines
13 KiB
JSON
248 lines
13 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2024-39481",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2024-06-25T14:23:23.746Z",
|
|
"datePublished": "2024-07-05T06:55:09.916Z",
|
|
"dateUpdated": "2026-08-05T11:33:35.153Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T11:33:35.153Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mc: Fix graph walk in media_pipeline_start\n\nThe graph walk tries to follow all links, even if they are not between\npads. This causes a crash with, e.g. a MEDIA_LNK_FL_ANCILLARY_LINK link.\n\nFix this by allowing the walk to proceed only for MEDIA_LNK_FL_DATA_LINK\nlinks."
|
|
}
|
|
],
|
|
"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 graph walk is reached only through VIDIOC_STREAMON (and equivalent driver streaming paths) on a local V4L2 device node such as /dev/video0, with the topology further influenced via /dev/media0 ioctls. There is no network or adjacent-network path into media_pipeline_start().\nAC:L - On any affected system the ancillary link is created at probe time by the sensor/lens binding, so the attacker only has to open the video node and issue a single STREAMON to make the walk dereference the ancillary link — it is deterministic, with no race to win and no memory-layout preconditions.\nPR:L - Opening /dev/videoN requires only unprivileged local access that is routinely granted — systemd's uaccess udev rule gives the logged-in seat user ACL access to video4linux nodes, embedded systems use the `video` group, and on Android the camera service holds it. No capability check exists anywhere on the path from the ioctl to media_pipeline_explore_next_link().\nUI:N - The attacker performs the entire sequence themselves — open the device, optionally configure links/formats, then STREAMON. No action by any other user is needed.\nS:U - The type confusion, the wild dereferences, and the out-of-bounds pointer write all occur within kernel memory under the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Reading a struct media_entity as a struct media_pad makes the walk follow pointers harvested from wrong offsets inside struct v4l2_subdev (name+32, name+80), and the resulting pad->pipe write corrupts num_pads/num_links/num_backlinks — counts that subsequently drive entity->pads[] indexing and are copied to userspace through MEDIA_IOC_ENUM_LINKS/G_TOPOLOGY, disclosing kernel heap pointer bytes and out-of-bounds memory.\nI:H - This is a genuine type confusion that produces an 8-byte kernel-pointer write at offset 56 of a live media_entity (pad->pipe = pipe, and pad->pipe = NULL on stop), clobbering adjacent metadata fields and giving an attacker-influenced corruption primitive rather than a mere read fault.\nA:H - The commit message states outright that the unfiltered walk \"causes a crash\" with an ancillary link; the confused pointers are dereferenced in the DFS loop and in dev_dbg, producing a kernel oops on STREAMON that is trivially repeatable."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/media/mc/mc-entity.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "ae219872834a32da88408a92a4b4745c11f5a7ce",
|
|
"lessThan": "788fd0f11e45ae8d3a8ebbd3452a6e83f92db376",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "ae219872834a32da88408a92a4b4745c11f5a7ce",
|
|
"lessThan": "e80d9db99b7b6c697d8d952dfd25c3425cf61499",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "ae219872834a32da88408a92a4b4745c11f5a7ce",
|
|
"lessThan": "bee9440bc0b6b3b7432f7bfde28656262a3484a2",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "ae219872834a32da88408a92a4b4745c11f5a7ce",
|
|
"lessThan": "8a9d420149c477e7c97fbd6453704e4612bdd3fa",
|
|
"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/mc/mc-entity.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.1",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "6.1",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.94",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.34",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.9.5",
|
|
"lessThanOrEqual": "6.9.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.10",
|
|
"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": "6.1",
|
|
"versionEndExcluding": "6.1.94"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.1",
|
|
"versionEndExcluding": "6.6.34"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.1",
|
|
"versionEndExcluding": "6.9.5"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.1",
|
|
"versionEndExcluding": "6.10"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/788fd0f11e45ae8d3a8ebbd3452a6e83f92db376"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/e80d9db99b7b6c697d8d952dfd25c3425cf61499"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/bee9440bc0b6b3b7432f7bfde28656262a3484a2"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/8a9d420149c477e7c97fbd6453704e4612bdd3fa"
|
|
}
|
|
],
|
|
"title": "media: mc: Fix graph walk in media_pipeline_start",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2024-07-05T20:07:40.257709Z",
|
|
"id": "CVE-2024-39481",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2024-07-05T20:07:53.742Z"
|
|
}
|
|
},
|
|
{
|
|
"providerMetadata": {
|
|
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
|
|
"shortName": "CVE",
|
|
"dateUpdated": "2024-08-02T04:26:15.883Z"
|
|
},
|
|
"title": "CVE Program Container",
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/788fd0f11e45ae8d3a8ebbd3452a6e83f92db376",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/e80d9db99b7b6c697d8d952dfd25c3425cf61499",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/bee9440bc0b6b3b7432f7bfde28656262a3484a2",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/8a9d420149c477e7c97fbd6453704e4612bdd3fa",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
} |