Answer in brief
CVE-2026-93040 records a Unknown severity vulnerability in dmaengine: dw-edma: Serialize channel state checks. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <be0072af8ce6e9458cc586e0e8b41a251e7d4316 || >=e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <2d76b91deeab973dd8a8c2ee587ce27f881de768 || >=e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <3001cfcee30dcc81f8b3774319c12067f126e49a || >=e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <b6293a8a38f4d5866ce1a264c138265a02e4c53a || >=e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <da16a02f0998a0d455ce6265b836b29ad92e6e58 || >=e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <fe0ffa0190e862ed71e8c1a476090f648c9cb7d9 || >=e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <6fc436e1500c5e4f0dde2a3dbadf6d898057be8f || >=e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <f7d1619f3e10c619b62c6cd6d95371b5c526c85a | be0072af8ce6e9458cc586e0e8b41a251e7d4316, 2d76b91deeab973dd8a8c2ee587ce27f881de768, 3001cfcee30dcc81f8b3774319c12067f126e49a, b6293a8a38f4d5866ce1a264c138265a02e4c53a, da16a02f0998a0d455ce6265b836b29ad92e6e58, fe0ffa0190e862ed71e8c1a476090f648c9cb7d9, 6fc436e1500c5e4f0dde2a3dbadf6d898057be8f, f7d1619f3e10c619b62c6cd6d95371b5c526c85a |
| Linux/Linuxgeneric | 5.3 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.