CVE-2026-89941: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f преди 311595dc0b5621f74d8eb4dc38ef4efcdfe7e769; 3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f преди 06a9460b8b792e109cbc934a856d02e5cff217ef; 3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f преди 11cef99491117d4264603df159c4ff5f3845a059; 3e26d9f08fbe0b73e951a5e810fdb7a332b7e37f преди 8662e56c31cf23b61ca3d11b516efb94c35b8026
• Linux Linux: 6.11; преди 6.11; 6.12.110 до 6.12.*; 6.18.51 до 6.18.*; 7.2.5 до 7.2.*; 7.3 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89941
• https://nvd.nist.gov/vuln/detail/CVE-2026-89941
• https://git.kernel.org/stable/c/311595dc0b5621f74d8eb4dc38ef4efcdfe7e769
• https://git.kernel.org/stable/c/06a9460b8b792e109cbc934a856d02e5cff217ef
• https://git.kernel.org/stable/c/11cef99491117d4264603df159c4ff5f3845a059
• https://git.kernel.org/stable/c/8662e56c31cf23b61ca3d11b516efb94c35b8026