CVE-2026-93040
CVE CVE-2026-93040EUVD EUVD-2026-82150Published 2026-09-17T16:10:33.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 5.3; patch: 6.12.110; e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <fe0ffa0190e862ed71e8c1a476090f648c9cb7d9; e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <6fc436e1500c5e4f0dde2a3dbadf6d898057be8f; e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <f7d1619f3e10c619b62c6cd6d95371b5c526c85a; patch: 6.1.188; patch: 6.18.52; patch: 7.2.6; e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <da16a02f0998a0d455ce6265b836b29ad92e6e58; patch: 0; e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <b6293a8a38f4d5866ce1a264c138265a02e4c53a; patch: 5.15.221; patch: 5.10.270; e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <3001cfcee30dcc81f8b3774319c12067f126e49a; e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <be0072af8ce6e9458cc586e0e8b41a251e7d4316; e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf <2d76b91deeab973dd8a8c2ee587ce27f881de768; patch: 7.3-rc1; patch: 6.6.157
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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