Description
In the Linux kernel, the following vulnerability has been resolved: i3c: mipi-i3c-hci: Correct RING_CTRL_ABORT handling in DMA dequeue The logic used to abort the DMA ring contains several flaws: 1. The driver unconditionally issues a ring abort even when the ring has already stopped. 2. The completion used to wait for abort completion is never re-initialized, resulting in incorrect wait behavior. 3. The abort sequence unintentionally clears RING_CTRL_ENABLE, which resets hardware ring pointers and disrupts the controller state. 4. If the ring is already stopped, the abort operation should be considered successful without attempting further action. Fix the abort handling by checking whether the ring is running before issuing an abort, re-initializing the completion when needed, ensuring that RING_CTRL_ENABLE remains asserted during abort, and treating an already stopped ring as a successful condition.
Affected products
linux: linux kernel
References6
- git.kernel.org/stable/c/003df94bcc9227e8e930abd03ac7f63ac10033dc Patch
- git.kernel.org/stable/c/5549611888f5ca2db5e8e692b57f30626ddf9898 Patch
- git.kernel.org/stable/c/b795e68bf3073d67bebbb5a44d93f49efc5b8cc7 Patch
- git.kernel.org/stable/c/04b2853fdbb2ec9d03ece45da3c830396647120f
- git.kernel.org/stable/c/377e75da122ffce7cec551f43fa884d57f2f8e63
- git.kernel.org/stable/c/55a0b47a372245f7667e0a4ba5c6f2a4c7a889a6
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 13 November 2026
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