CVE-2026-98343dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 13 days later
· 13 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 8ad342a863590b24ce77681b7e081363fb3333f7 – < b92c502595336a3cc5bb7a060170891366745a5d
- affected 8ad342a863590b24ce77681b7e081363fb3333f7 – < 855187a88bdf762c46b6849307597e3e02bfc1d9
- affected 8ad342a863590b24ce77681b7e081363fb3333f7 – < c9780b601438137494b407eb4301bb3de2587ac9
- affected 8ad342a863590b24ce77681b7e081363fb3333f7 – < 07eb075b60d565a5e465a1945a80cc62807492ad
- affected 8ad342a863590b24ce77681b7e081363fb3333f7 – < 9319dd64d5cdef851841c091f30424faa2284c31
- affected 8ad342a863590b24ce77681b7e081363fb3333f7 – < 6cf31716b77a71c0d634106f4f3951377b8dc6dc
- affected 8ad342a863590b24ce77681b7e081363fb3333f7 – < 02bd02c585293634b213b142cba63cbf77891f6b
- affected 8ad342a863590b24ce77681b7e081363fb3333f7 – < e873c74132f0c5f1452816cd9bb26208f0bba1e1
- affected 5.6
- unaffected < 5.6
- unaffected 5.10.271 – ≤ 5.10.*
- unaffected 5.15.222 – ≤ 5.15.*
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.54 – ≤ 6.18.*
- unaffected 7.2.8 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/b92c502595336a3cc5bb7a060170891366745a5d (opens in a new tab)
- https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9 (opens in a new tab)
- https://git.kernel.org/stable/c/c9780b601438137494b407eb4301bb3de2587ac9 (opens in a new tab)
- https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad (opens in a new tab)
- https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31 (opens in a new tab)
- https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc (opens in a new tab)
- https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b (opens in a new tab)
- https://git.kernel.org/stable/c/e873c74132f0c5f1452816cd9bb26208f0bba1e1 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-93328 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://cveledger.app/cve/CVE-2026-98343)Record last updated .