CVE-2026-89941
CVE CVE-2026-89941EUVD EUVD-2026-80541Published 2026-09-16T10:32:29.000ZLast changed 2026-09-16T14:40:28.000ZCVSS 7.8
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: iio: buffer: Make IIO DMA fence release RCU-safe The `dma_fence` documentation states that if a custom release implementation is provided, the `dma_fence` object must be freed in an RCU-safe way. The current `iio_dma_fence` implementation uses `kfree()`, which might result in a use-after-free. Remove the custom `release` implementation. This makes the DMA fence core fall back to `dma_fence_free()`, which calls `kfree_rcu()` on the fence. This requires that the fence be the first member of `struct iio_dma_fence`. Using the default release method for extended DMA fence structures is a common pattern.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 6.18.51; 3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f <311595dc0b5621f74d8eb4dc38ef4efcdfe7e769; patch: 7.3-rc1; 3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f <06a9460b8b792e109cbc934a856d02e5cff217ef; patch: 6.12.110; 3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f <11cef99491117d4264603df159c4ff5f3845a059; patch: 7.2.5; patch: 0; 6.11; 3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f <8662e56c31cf23b61ca3d11b516efb94c35b8026
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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