Description
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table walks in fault injection and AT emulation walk_s1() and kvm_walk_nested_s2() expect to be called while holding kvm->srcu to guard against memslot changes. While this is generally the case, __kvm_at_s12() and __kvm_find_s1_desc_level() call into the respective walkers without taking kvm->srcu. Fix by acquiring kvm->srcu prior to the table walk in both instances.
CVSS breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Linux / Linuxbe04cebf3e78874627dc1042991d5d504464a5cc – 97706097f9b851cfe55c3b00b083dfc2bcf542bc
- Linux / Linuxbe04cebf3e78874627dc1042991d5d504464a5cc – ec42b4ed1b072ea2d03f086061aa67bad6d8de39
- Linux / Linuxbe04cebf3e78874627dc1042991d5d504464a5cc – f2ca45b50d4216c9cc7ffabf50d9ad1932209251
- Linux / Linux6.12 – 6.12
- Linux / Linux0 – 6.12
- Linux / Linux6.18.36 – 6.18.*
- Linux / Linux7.0.13 – 7.0.*
- Linux / Linux7.1 – *