CVE-2026-45876

UNKNOWN 0.0

arm64/gcs: Fix error handling in arch_set_shadow_stack_status()

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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().

Vendor	linux
Product	linux
Ecosystems	Linux Kernel
Industries	Technology
Published	May 27, 2026

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Affected Versions

Linux / Linux

b57180c75c7ebff6613886cb69ef6e283a10358b < c787a235deb33be6eda40beee8f561da5fd8cb8c b57180c75c7ebff6613886cb69ef6e283a10358b < a4741114c9622346c4bbb8cc2bbd88153616ffaf b57180c75c7ebff6613886cb69ef6e283a10358b < 53c998527ffa60f9deda8974a11ad39790684159

Linux / Linux

6.13

References

NVD ↗ CVE.org ↗ EPSS Data ↗

git.kernel.org: https://git.kernel.org/stable/c/c787a235deb33be6eda40beee8f561da5fd8cb8c git.kernel.org: https://git.kernel.org/stable/c/a4741114c9622346c4bbb8cc2bbd88153616ffaf git.kernel.org: https://git.kernel.org/stable/c/53c998527ffa60f9deda8974a11ad39790684159