CVE-2022-49285 (GCVE-0-2022-49285)
Vulnerability from cvelistv5
Published
2025-02-26 01:56
Modified
2025-05-04 08:34
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
iio: accel: mma8452: use the correct logic to get mma8452_data
The original logic to get mma8452_data is wrong, the *dev point to
the device belong to iio_dev. we can't use this dev to find the
correct i2c_client. The original logic happen to work because it
finally use dev->driver_data to get iio_dev. Here use the API
to_i2c_client() is wrong and make reader confuse. To correct the
logic, it should be like this
struct mma8452_data *data = iio_priv(dev_get_drvdata(dev));
But after commit 8b7651f25962 ("iio: iio_device_alloc(): Remove
unnecessary self drvdata"), the upper logic also can't work.
When try to show the avialable scale in userspace, will meet kernel
dump, kernel handle NULL pointer dereference.
So use dev_to_iio_dev() to correct the logic.
Dual fixes tags as the second reflects when the bug was exposed, whilst
the first reflects when the original bug was introduced.
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/iio/accel/mma8452.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"status": "affected",
"version": "c3cdd6e48e35b7a02f28e301ef30a87ff3cd6527",
"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
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"programFiles": [
"drivers/iio/accel/mma8452.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.4"
},
{
"lessThan": "4.4",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.54",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.17.*",
"status": "unaffected",
"version": "5.17.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.54",
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"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"vulnerable": true
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{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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}
],
"negate": false,
"operator": "OR"
}
]
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: accel: mma8452: use the correct logic to get mma8452_data\n\nThe original logic to get mma8452_data is wrong, the *dev point to\nthe device belong to iio_dev. we can\u0027t use this dev to find the\ncorrect i2c_client. The original logic happen to work because it\nfinally use dev-\u003edriver_data to get iio_dev. Here use the API\nto_i2c_client() is wrong and make reader confuse. To correct the\nlogic, it should be like this\n\n struct mma8452_data *data = iio_priv(dev_get_drvdata(dev));\n\nBut after commit 8b7651f25962 (\"iio: iio_device_alloc(): Remove\nunnecessary self drvdata\"), the upper logic also can\u0027t work.\nWhen try to show the avialable scale in userspace, will meet kernel\ndump, kernel handle NULL pointer dereference.\n\nSo use dev_to_iio_dev() to correct the logic.\n\nDual fixes tags as the second reflects when the bug was exposed, whilst\nthe first reflects when the original bug was introduced."
}
],
"providerMetadata": {
"dateUpdated": "2025-05-04T08:34:15.589Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
{
"url": "https://git.kernel.org/stable/c/4c0bb583a4444cce224e8661090cbffc98e2fe07"
},
{
"url": "https://git.kernel.org/stable/c/d2d9ebdbff79d87d27652578e6d1638ad3b5f3bf"
},
{
"url": "https://git.kernel.org/stable/c/c87b7b12f48db86ac9909894f4dc0107d7df6375"
}
],
"title": "iio: accel: mma8452: use the correct logic to get mma8452_data",
"x_generator": {
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},
"cveMetadata": {
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"cveId": "CVE-2022-49285",
"datePublished": "2025-02-26T01:56:25.096Z",
"dateReserved": "2025-02-26T01:49:39.298Z",
"dateUpdated": "2025-05-04T08:34:15.589Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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