CVE-2022-49320 (GCVE-0-2022-49320)
Vulnerability from cvelistv5
Published
2025-02-26 02:10
Modified
2025-05-04 08:35
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
dmaengine: zynqmp_dma: In struct zynqmp_dma_chan fix desc_size data type
In zynqmp_dma_alloc/free_chan_resources functions there is a
potential overflow in the below expressions.
dma_alloc_coherent(chan->dev, (2 * chan->desc_size *
ZYNQMP_DMA_NUM_DESCS),
&chan->desc_pool_p, GFP_KERNEL);
dma_free_coherent(chan->dev,(2 * ZYNQMP_DMA_DESC_SIZE(chan) *
ZYNQMP_DMA_NUM_DESCS),
chan->desc_pool_v, chan->desc_pool_p);
The arguments desc_size and ZYNQMP_DMA_NUM_DESCS were 32 bit. Though
this overflow condition is not observed but it is a potential problem
in the case of 32-bit multiplication. Hence fix it by changing the
desc_size data type to size_t.
In addition to coverity fix it also reuse ZYNQMP_DMA_DESC_SIZE macro in
dma_alloc_coherent API argument.
Addresses-Coverity: Event overflow_before_widen.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: b0cc417c1637192be658e68a74c8d1568e3d35f6 Version: b0cc417c1637192be658e68a74c8d1568e3d35f6 Version: b0cc417c1637192be658e68a74c8d1568e3d35f6 Version: b0cc417c1637192be658e68a74c8d1568e3d35f6 Version: b0cc417c1637192be658e68a74c8d1568e3d35f6 Version: b0cc417c1637192be658e68a74c8d1568e3d35f6 |
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|
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{
"containers": {
"cna": {
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{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/dma/xilinx/zynqmp_dma.c"
],
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{
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"vendor": "Linux",
"versions": [
{
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{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
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{
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"status": "unaffected",
"version": "5.4.198",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.122",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.47",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.17.*",
"status": "unaffected",
"version": "5.17.15",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.18.*",
"status": "unaffected",
"version": "5.18.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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],
"negate": false,
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: zynqmp_dma: In struct zynqmp_dma_chan fix desc_size data type\n\nIn zynqmp_dma_alloc/free_chan_resources functions there is a\npotential overflow in the below expressions.\n\ndma_alloc_coherent(chan-\u003edev, (2 * chan-\u003edesc_size *\n\t\t ZYNQMP_DMA_NUM_DESCS),\n\t\t \u0026chan-\u003edesc_pool_p, GFP_KERNEL);\n\ndma_free_coherent(chan-\u003edev,(2 * ZYNQMP_DMA_DESC_SIZE(chan) *\n ZYNQMP_DMA_NUM_DESCS),\n chan-\u003edesc_pool_v, chan-\u003edesc_pool_p);\n\nThe arguments desc_size and ZYNQMP_DMA_NUM_DESCS were 32 bit. Though\nthis overflow condition is not observed but it is a potential problem\nin the case of 32-bit multiplication. Hence fix it by changing the\ndesc_size data type to size_t.\n\nIn addition to coverity fix it also reuse ZYNQMP_DMA_DESC_SIZE macro in\ndma_alloc_coherent API argument.\n\nAddresses-Coverity: Event overflow_before_widen."
}
],
"providerMetadata": {
"dateUpdated": "2025-05-04T08:35:08.000Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/83960276ffc9bf5570d4106490346b61e61be5f3"
},
{
"url": "https://git.kernel.org/stable/c/95a0ba85c1b51b36e909841c02d205cd223ab753"
},
{
"url": "https://git.kernel.org/stable/c/7b5488f4721fed6e121e661e165bab06ae2f8675"
},
{
"url": "https://git.kernel.org/stable/c/4838969e4d95d2bd2995d1605b20d3144fcb3e74"
},
{
"url": "https://git.kernel.org/stable/c/90aefae2e3a770a6909d339f5d8a988c0b0ceaf0"
},
{
"url": "https://git.kernel.org/stable/c/f9a9f43a62a04ec3183fb0da9226c7706eed0115"
}
],
"title": "dmaengine: zynqmp_dma: In struct zynqmp_dma_chan fix desc_size data type",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2022-49320",
"datePublished": "2025-02-26T02:10:45.703Z",
"dateReserved": "2025-02-26T02:08:31.537Z",
"dateUpdated": "2025-05-04T08:35:08.000Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}