CVSS4
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/SC:L/VI:L/SI:L/VA:N/SA:N
AI Score
Confidence
High
EPSS
Percentile
43.7%
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.
[
{
"defaultStatus": "unaffected",
"product": "Fuchsia",
"repo": "https://fuchsia.googlesource.com/fuchsia",
"vendor": "Google LLC",
"versions": [
{
"lessThan": "7d731b4e9599088ac3073956933559da7bca6a00",
"status": "affected",
"version": "0",
"versionType": "git"
}
]
}
]