dmaengine: dw-edma: Terminate all descriptors without callbacks
In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw-edma: Terminate all descriptors without callbacks The DMA Engine client documentation says in the "Terminate APIs" section of Documentation/driver-api/dmaengine/client.rst: "No callback functions will be called for any incomplete transfers." dw-edma instead calls vchan_cookie_complete() when a deferred STOP reaches the interrupt handler. This schedules a callback for the active descriptor and leaves other issued or submitted descriptors queued. A late callback after dmaengine_terminate_sync() can dereference client state that has already been freed, while leftover descriptors may later restart into reused buffers or leak. Move all issued and submitted descriptors to the terminated list whenever termination completes. For a pending STOP, do this from both the DONE and ABORT paths. Complete their cookies in order without scheduling callbacks. A STOP can remain pending until the running transfer raises an interrupt. Make device_synchronize() wait for such a pending STOP to complete before releasing terminated descriptors. Reuse it from free_chan_resources(), then release the remaining virt-dma resources. Sleep instead of busy-polling while waiting, and warn if the existing timeout expires.
CVE-2026-93042
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-2026-93042
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": [
{
"status": "affected",
"version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
"lessThan": "65e387b95d3855aa894ac729e1778e5bcb9083cb",
"versionType": "git"
},
{
"status": "affected",
"version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
"lessThan": "4793f9099a1cadf4e37f3a03d524af6bce88a0ea",
"versionType": "git"
},
{
"status": "affected",
"version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
"lessThan": "be87d86537de7ea6fd025f41033d2faff880973f",
"versionType": "git"
},
{
"status": "affected",
"version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
"lessThan": "f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7",
"versionType": "git"
},
{
"status": "affected",
"version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
"lessThan": "99109a51efd28c9a661fbfb9469b023c517b31d1",
"versionType": "git"
}
],
"programFiles": [
"drivers/dma/dw-edma/dw-edma-core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.3",
"versionType": "semver"
},
{
"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/dw-edma/dw-edma-core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93042
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #37779 · Revision 1
- Added to Heist Feed
- Publisher date