CVE-2026-68176

tracing: Fix mmiotrace possible NULL dereferencing of hiter->dev

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In the Linux kernel, the following vulnerability has been resolved: tracing: Fix mmiotrace possible NULL dereferencing of hiter->dev If the mmio_pipe_open() fails to find a PCI device, the hiter->dev will be assigned to NULL. The mmiotrace read() function dereferences the hiter->dev if hiter exists. Change the test of the read to not only check hiter being NULL, but also the hiter->dev before dereferencing it.

Produtos afetados

Linux · Linux

Referências

https://git.kernel.org/stable/c/144f29e85702234b23d2a62abf723e6a17eb5427 https://git.kernel.org/stable/c/201a01102c529772168181190cb084471082cf5c https://git.kernel.org/stable/c/724cd84b0546c07806840fa658714488553d13a2 https://git.kernel.org/stable/c/8464427e1c177809a9488a97dfa2807d9dcf323b https://git.kernel.org/stable/c/faaf95135184208ee3ac6f33175c8d1800669dfc