CVE-2026-89941High· 7.8▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: iio: buffer: Make IIO DMA fence release RCU-safe The `dma_fence` documentation states that if a custom release implementation is provided, the `dma_fence` object must …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 19.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
— → 7.8
none → high
0.2%
0.2% → 0.2%
In the Linux kernel, the following vulnerability has been resolved:
iio: buffer: Make IIO DMA fence release RCU-safe
The dma_fence documentation states that if a custom release
implementation is provided, the dma_fence object must be freed in an
RCU-safe way. The current iio_dma_fence implementation uses kfree(),
which might result in a use-after-free.
Remove the custom release implementation. This makes the DMA fence core
fall back to dma_fence_free(), which calls kfree_rcu() on the fence.
This requires that the fence be the first member of struct iio_dma_fence.
Using the default release method for extended DMA fence structures is a common pattern.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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