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GHSA-q77g-rg5g-rf78

GitHub Security Advisory

⚠ Unreviewed CRITICAL Has CVE

Advisory Details

An incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding.

Related CVEs

Key Information

GHSA ID
GHSA-q77g-rg5g-rf78
Published
January 19, 2022 12:01 AM
Last Modified
October 25, 2022 7:00 PM
CVSS Score
9.0 /10
Primary Ecosystem
Unknown
Primary Package
Unknown
GitHub Reviewed
✗ No

Dataset

Last updated: July 6, 2025 6:30 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.