CVE-2025-71186

dmaengine: stm32: dmamux: fix device leak on route allocation

EPSS 0.2%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

31 Jan 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

In the Linux kernel, the following vulnerability has been resolved: dmaengine: stm32: dmamux: fix device leak on route allocation Make sure to drop the reference taken when looking up the DMA mux platform device during route allocation. Note that holding a reference to a device does not prevent its driver data from going away so there is no point in keeping the reference.

Affected products

Linux · Linux

References

https://cert-portal.siemens.com/productcert/html/ssa-019113.html https://cert-portal.siemens.com/productcert/html/ssa-253495.html https://git.kernel.org/stable/c/1a179ac01ff3993ab97e33cc77c316ed7415cda1 https://git.kernel.org/stable/c/1dda2a32303df0091896b01a9d09070d61fa344c https://git.kernel.org/stable/c/2fb10259d4efb4367787b5ae9c94192e8a91c648 https://git.kernel.org/stable/c/3b42020e6790a5e19b36c187ed5b488a5716f97f https://git.kernel.org/stable/c/3ef52d31cce8ba816739085a61efe07b63c6cf27 https://git.kernel.org/stable/c/6393da54dcb3488c080a183c4182ddec71ba8d7f https://git.kernel.org/stable/c/dd6e4943889fb354efa3f700e42739da9bddb6ef