Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix uninitialized memcache pointer in user_mem_abort() Commit fce886a60207 ("KVM: arm64: Plumb the pKVM MMU in KVM") made the initialization of the local memcache variable in user_mem_abort() conditional, leaving a codepath where it is used uninitialized via kvm_pgtable_stage2_map(). This can fail on any path that requires a stage-2 allocation without transition via a permission fault or dirty logging. Fix this by making sure that memcache is always valid.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected fce886a6020734d6253c2c5a3bc285e385cc5496 before a26d50f8a4a5049e956984797b5d0dedea4bbb18; affected fce886a6020734d6253c2c5a3bc285e385cc5496 before 157dbc4a321f5bb6f8b6c724d12ba720a90f1a7c |
| Linux / Linux | affected 6.14; unaffected 0 before 6.14; unaffected 6.14.7 through 6.14.*; unaffected 6.15 through * |
CWE
No CWE identifiers supplied.