CVE-2026-98343
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel() When dma_device_put() drops the last reference on chan->device->ref, dma_device_release() runs and may free the dma_device along with its channels. dma_chan_put() then still reads chan->device->owner via dma_chan_to_owner() for the trailing module_put(). KASAN catches it: slab-use-after-free in dma_chan_put+0x3e6/0x4c0 Read of size 8 by task insmod/6319 Freed by task 6319: kfree+0x225/0x470 dma_chan_put+0x395/0x4c0 dmaengine_put+0xf8/0x160 Cache the module owner in dma_chan_put() before the put so the trailing module_put() does not need chan->device.
Severity
Not scored
CVSS score
Not available
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-10-06 09:18:27.163000
Last modified
2026-10-19 10:18:36.690000
View original CVE JSON
{
"id": "CVE-2026-98343",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-10-06T09:18:27.163",
"lastModified": "2026-10-19T10:18:36.690",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()\n\nWhen dma_device_put() drops the last reference on chan->device->ref,\ndma_device_release() runs and may free the dma_device along with its\nchannels.\n\ndma_chan_put() then still reads chan->device->owner via\ndma_chan_to_owner() for the trailing module_put(). KASAN catches it:\n\n\tslab-use-after-free in dma_chan_put+0x3e6/0x4c0\n\tRead of size 8 by task insmod/6319\n\tFreed by task 6319:\n\t kfree+0x225/0x470\n\t dma_chan_put+0x395/0x4c0\n\t dmaengine_put+0xf8/0x160\n\nCache the module owner in dma_chan_put() before the put so the trailing\nmodule_put() does not need chan->device."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/dma/dmaengine.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "8ad342a863590b24ce77681b7e081363fb3333f7",
"lessThan": "b92c502595336a3cc5bb7a060170891366745a5d",
"versionType": "git",
"status": "affected"
},
{
"version": "8ad342a863590b24ce77681b7e081363fb3333f7",
"lessThan": "855187a88bdf762c46b6849307597e3e02bfc1d9",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "c9780b601438137494b407eb4301bb3de2587ac9",
"versionType": "git",
"status": "affected"
},
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"status": "affected"
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"versionType": "git",
"status": "affected"
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"lessThan": "6cf31716b77a71c0d634106f4f3951377b8dc6dc",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "02bd02c585293634b213b142cba63cbf77891f6b",
"versionType": "git",
"status": "affected"
},
{
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"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/dma/dmaengine.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "5.6",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.6",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.271",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.222",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.189",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.158",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.112",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.54",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2.8",
"lessThanOrEqual": "7.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"url": "https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
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},
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{
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},
{
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},
{
"url": "https://git.kernel.org/stable/c/b92c502595336a3cc5bb7a060170891366745a5d",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
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},
{
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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]
}