CVE-2026-98343dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 8ad342a863590b24ce77681b7e081363fb3333f7 before b92c502595336a3cc5bb7a060170891366745a5d; from 8ad342a863590b24ce77681b7e081363fb3333f7 before 855187a88bdf762c46b6849307597e3e02bfc1d9; from 8ad342a863590b24ce77681b7e081363fb3333f7 before c9780b601438137494b407eb4301bb3de2587ac9; 8ad342a863590b24ce77681b7e081363fb3333f7 builds before 07eb075b60d565a5e465a1945a80cc62807492ad; from 8ad342a863590b24ce77681b7e081363fb3333f7 before 9319dd64d5cdef851841c091f30424faa2284c31; 8ad342a863590b24ce77681b7e081363fb3333f7 builds before 6cf31716b77a71c0d634106f4f3951377b8dc6dc; 8ad342a863590b24ce77681b7e081363fb3333f7 builds before 02bd02c585293634b213b142cba63cbf77891f6b; from 8ad342a863590b24ce77681b7e081363fb3333f7 before e873c74132f0c5f1452816cd9bb26208f0bba1e1 | CNA record |
References
- https://git.kernel.org/stable/c/b92c502595336a3cc5bb7a060170891366745a5d
- https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9
- https://git.kernel.org/stable/c/c9780b601438137494b407eb4301bb3de2587ac9
- https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad
- https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31
- https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc
- https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b
- https://git.kernel.org/stable/c/e873c74132f0c5f1452816cd9bb26208f0bba1e1
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.