Answer in brief
CVE-2026-98343 records a Unknown severity vulnerability in dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8ad342a863590b24ce77681b7e081363fb3333f7 <b92c502595336a3cc5bb7a060170891366745a5d || >=8ad342a863590b24ce77681b7e081363fb3333f7 <855187a88bdf762c46b6849307597e3e02bfc1d9 || >=8ad342a863590b24ce77681b7e081363fb3333f7 <c9780b601438137494b407eb4301bb3de2587ac9 || >=8ad342a863590b24ce77681b7e081363fb3333f7 <07eb075b60d565a5e465a1945a80cc62807492ad || >=8ad342a863590b24ce77681b7e081363fb3333f7 <9319dd64d5cdef851841c091f30424faa2284c31 || >=8ad342a863590b24ce77681b7e081363fb3333f7 <6cf31716b77a71c0d634106f4f3951377b8dc6dc || >=8ad342a863590b24ce77681b7e081363fb3333f7 <02bd02c585293634b213b142cba63cbf77891f6b || >=8ad342a863590b24ce77681b7e081363fb3333f7 <e873c74132f0c5f1452816cd9bb26208f0bba1e1 | b92c502595336a3cc5bb7a060170891366745a5d, 855187a88bdf762c46b6849307597e3e02bfc1d9, c9780b601438137494b407eb4301bb3de2587ac9, 07eb075b60d565a5e465a1945a80cc62807492ad, 9319dd64d5cdef851841c091f30424faa2284c31, 6cf31716b77a71c0d634106f4f3951377b8dc6dc, 02bd02c585293634b213b142cba63cbf77891f6b, e873c74132f0c5f1452816cd9bb26208f0bba1e1 |
| Linux/Linuxgeneric | 5.6 | Not reported |
Published upstream
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 6, 2026
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.
Quoted source text, attributed separately from HOL analysis.