210 lines
10 KiB
JSON
210 lines
10 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2024-40986",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2024-07-12T12:17:45.605Z",
|
|
"datePublished": "2024-07-12T12:37:31.800Z",
|
|
"dateUpdated": "2026-08-05T11:34:26.008Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T11:34:26.008Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: xilinx: xdma: Fix data synchronisation in xdma_channel_isr()\n\nRequests the vchan lock before using xdma->stop_request."
|
|
}
|
|
],
|
|
"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 race is driven through local client interfaces of the XDMA dmaengine provider — ALSA PCM trigger-stop/hw_free and V4L2 stop/DMA-timeout paths on /dev/snd/pcmC* and /dev/video* — which require local access to the system. There is no remote or network-facing path into drivers/dma/xilinx/xdma.c.\nAC:L - The attacker controls the terminate side of the race (issuing stream stop/STREAMOFF or PCM stop whenever it chooses) and can influence the interrupt side by selecting transfer/period sizes, and the attempt can be repeated indefinitely at no cost until the unlocked stop_requested read is mistimed.\nPR:L - Only an unprivileged local account with ordinary access to the audio or video device node backed by the XDMA channels is needed — no capabilities or root, since dmaengine_terminate_*/dmaengine_synchronize are invoked on behalf of normal PCM/V4L2 operations.\nUI:N - The attacker triggers the start/stop transfer cycle entirely on its own; no action by another user or administrator is required.\nS:U - The corruption occurs in kernel memory (dma_pool descriptor blocks and client DMA buffers) managed by the same kernel security authority; no VM, sandbox, or IOMMU boundary is crossed.\nC:H - Losing the last-interrupt synchronization lets descriptor blocks and data buffers be freed and reused while the PCIe engine is still reading them, so card-to-host and host-to-card transfers can expose recycled kernel memory contents to the device and to subsequent users of those pages.\nI:H - The DMA engine can continue writing into freed/recycled dma_pool memory and follow stale or attacker-groomed descriptor contents, giving a memory-corruption write primitive against arbitrary kernel-mapped memory that is a classic path to control-flow hijack.\nA:H - The same use-after-free of live descriptor blocks reliably produces kernel memory corruption and oops/panic, and the missed completion also stalls xdma_synchronize() on its one-second timeout on every terminate."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/dma/xilinx/xdma.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6a40fb8245965b481b4dcce011cd63f20bf91ee0",
|
|
"lessThan": "8e1f54e4a3f3207c9dc68bb5000603b75802e7f0",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6a40fb8245965b481b4dcce011cd63f20bf91ee0",
|
|
"lessThan": "462237d2d93fc9e9221d1cf9f773954d27da83c0",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "582ce5d734190d74e5ce9cd711cf6e964e1e7b29",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6.8.9",
|
|
"lessThan": "6.9",
|
|
"status": "affected",
|
|
"versionType": "semver"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/dma/xilinx/xdma.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6.9",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "6.9",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.9.7",
|
|
"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": "6.9",
|
|
"versionEndExcluding": "6.9.7"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.9",
|
|
"versionEndExcluding": "6.10"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "6.8.9"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/8e1f54e4a3f3207c9dc68bb5000603b75802e7f0"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/462237d2d93fc9e9221d1cf9f773954d27da83c0"
|
|
}
|
|
],
|
|
"title": "dmaengine: xilinx: xdma: Fix data synchronisation in xdma_channel_isr()",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"providerMetadata": {
|
|
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
|
|
"shortName": "CVE",
|
|
"dateUpdated": "2024-08-02T04:39:55.848Z"
|
|
},
|
|
"title": "CVE Program Container",
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/8e1f54e4a3f3207c9dc68bb5000603b75802e7f0",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/462237d2d93fc9e9221d1cf9f773954d27da83c0",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2024-40986",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2024-09-10T17:02:03.948638Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2024-09-11T17:34:20.818Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |