CVE-2026-45876

Published: Mag 27, 2026 Last Modified: Mag 27, 2026

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Other exploit source:

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In the Linux kernel, the following vulnerability has been resolved:

arm64/gcs: Fix error handling in arch_set_shadow_stack_status()

alloc_gcs() returns an error-encoded pointer on failure, which comes
from do_mmap(), not NULL.

The current NULL check fails to detect errors, which could lead to using
an invalid GCS address.

Use IS_ERR_VALUE() to properly detect errors, consistent with the
check in gcs_alloc_thread_stack().

https://git.kernel.org/stable/c/53c998527ffa60f9deda8974a11ad39790684159

https://git.kernel.org/stable/c/a4741114c9622346c4bbb8cc2bbd88153616ffaf

https://git.kernel.org/stable/c/c787a235deb33be6eda40beee8f561da5fd8cb8c