dmaengine: dw-edma: Serialize channel state checks
In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw-edma: Serialize channel state checks pause() and resume() read and update channel state without holding vc.lock, while the interrupt handlers update the same state under it. Take the same lock around those state checks so that request, status, and configured stay consistent. For example, pause() can observe EDMA_ST_BUSY right before the interrupt handler completes the final descriptor and moves the channel to EDMA_ST_IDLE, and then record EDMA_REQ_PAUSE on an already idle channel. No further interrupt will acknowledge the request, and since issue_pending() requires EDMA_REQ_NONE, the channel is wedged for good: terminate_all() leaves the stale request behind, so even reconfiguring the channel does not recover it. issue_pending() already runs under vc.lock, but it tests configured before taking it. Move that test under the lock as well, so configured, request, and status are evaluated as one channel-state snapshot.
CVE-2026-93040
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-2026-93040
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": "be0072af8ce6e9458cc586e0e8b41a251e7d4316",
"versionType": "git"
},
{
"status": "affected",
"version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
"lessThan": "2d76b91deeab973dd8a8c2ee587ce27f881de768",
"versionType": "git"
},
{
"status": "affected",
"version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
"lessThan": "3001cfcee30dcc81f8b3774319c12067f126e49a",
"versionType": "git"
},
{
"status": "affected",
"version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
"lessThan": "b6293a8a38f4d5866ce1a264c138265a02e4c53a",
"versionType": "git"
},
{
"status": "affected",
"version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
"lessThan": "da16a02f0998a0d455ce6265b836b29ad92e6e58",
"versionType": "git"
},
{
"status": "affected",
"version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
"lessThan": "fe0ffa0190e862ed71e8c1a476090f648c9cb7d9",
"versionType": "git"
},
{
"status": "affected",
"version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
"lessThan": "6fc436e1500c5e4f0dde2a3dbadf6d898057be8f",
"versionType": "git"
},
{
"status": "affected",
"version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
"lessThan": "f7d1619f3e10c619b62c6cd6d95371b5c526c85a",
"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": "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/dw-edma/dw-edma-core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93040
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37776 · Revision 1
- Added to Heist Feed
- Publisher date