MediumFix available
linux — security advisory
In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback Current code blindly writes over the SWERR and the OVERFLOW bits. Write back the bits actually read instead so the driver avoids clobbering the OVERFLOW bit that comes after the register is read.
- Products
- linux
- Affected versions
- Not specified
- Fixed versions
- 5.10.38-1
- CVEs
- CVE-2021-46920
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 01:10 UTC · Revision 1
Source evidence
In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback Current code blindly writes over the SWERR and the OVERFLOW bits. Write back the bits actually read instead so the driver avoids clobbering the OVERFLOW bit that comes after the register is read.
osv:DEBIAN-CVE-2021-46920
linux
Fixed versions: 5.10.38-1
linux
Fixed versions: 5.10.38-1
linux
Fixed versions: 5.10.38-1
Complete source record
{
"id": "59def90ca1a4d4f840882aff40056f88feca4cbe673d7413831c79a17326c98a",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-46920",
"method": "structured",
"payload": {
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"title": "DEBIAN-CVE-2021-46920",
"summary": "In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback Current code blindly writes over the SWERR and the OVERFLOW bits. Write back the bits actually read instead so the driver avoids clobbering the OVERFLOW bit that comes after the register is read.",
"evidence": "osv:DEBIAN-CVE-2021-46920",
"products": [
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"evidence": "/affected/0/package/name"
},
"prerequisites": [],
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"evidence": "/affected/0/ranges"
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{
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"aliases": [
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"metrics": [
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"package": {
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"package": {
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"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-46920.json"
},
"ecosystem_specific": {
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}
}
],
"modified": "2026-10-23T18:04:17.676466005Z",
"provider": "osv",
"upstream": [
"CVE-2021-46920"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2021-46920"
]
},
"related_cves": [
{
"value": "CVE-2021-46920",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 423207,
"published_at": "2024-02-27T07:15:08.987+00:00"
}