dmaengine: xilinx_dma: Fix channel idle state management in AXIDMA and MCDMA interrupt handlers
In the Linux kernel, the following vulnerability has been resolved: dmaengine: xilinx_dma: Fix channel idle state management in AXIDMA and MCDMA interrupt handlers Fix a race condition in AXIDMA and MCDMA irq handlers where the channel could be incorrectly marked as idle and attempt spurious transfers when descriptors are still being processed. The issue occurs when: 1. Multiple descriptors are queued and active. 2. An interrupt fires after completing some descriptors. 3. xilinx_dma_complete_descriptor() moves completed descriptors to done_list. 4. Channel is marked idle and start_transfer() is called even though active_list still contains unprocessed descriptors. 5. This leads to premature transfer attempts and potential descriptor corruption or missed completions. Only mark the channel as idle and start new transfers when the active list is actually empty, ensuring proper channel state management and avoiding spurious transfer attempts.
CVE-2026-93170
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93170
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
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"version": "c0bba3a99f0709c24c2c7ada7cb098966b1d791f",
"lessThan": "7f4b989d7d87381927b98d64492f8dcf979f57ab",
"versionType": "git"
},
{
"status": "affected",
"version": "c0bba3a99f0709c24c2c7ada7cb098966b1d791f",
"lessThan": "5459e02707b27a964ae72e028d3ff72a3b687c4a",
"versionType": "git"
},
{
"status": "affected",
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"lessThan": "425630e9eea1f9f8912b8c6abf01e0dab1e27917",
"versionType": "git"
},
{
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"lessThan": "fdaf297ab275c6efecac5e87669c31bc89b74297",
"versionType": "git"
},
{
"status": "affected",
"version": "c0bba3a99f0709c24c2c7ada7cb098966b1d791f",
"lessThan": "c27d16fd2358b2fc3e1ffaca03afd11dc28630ea",
"versionType": "git"
},
{
"status": "affected",
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"lessThan": "ec927657524be4438447944a58173c7baf7f2384",
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{
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"versionType": "git"
},
{
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"lessThan": "0b6d055edb55ecadadf54e930c2b4fab76fa9a5a",
"versionType": "git"
}
],
"programFiles": [
"drivers/dma/xilinx/xilinx_dma.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/dma/xilinx/xilinx_dma.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93170
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #37885 · Revision 1
- Added to Heist Feed
- Publisher date