CVE-2026-98343

In the Linux kernel, the following vulnerability has been resolved: dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel() When dma_device_put() drops the last reference on chan->device->ref, dma_device_release() runs and may free the dma_device along with its channels. dma_chan_put() then still reads chan->device->owner via dma_chan_to_owner() for the trailing module_put(). KASAN catches it: slab-use-after-free in dma_chan_put+0x3e6/0x4c0 Read of size 8 by task insmod/6319 Freed by task 6319: kfree+0x225/0x470 dma_chan_put+0x395/0x4c0 dmaengine_put+0xf8/0x160 Cache the module owner in dma_chan_put() before the put so the trailing module_put() does not need chan->device.

EPSS

0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)

Published

2026-10-06

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b
• https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad
• https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc
• https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9
• https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31

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