Description
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Validate the SVE vector length in pkvm_vcpu_init_sve() pkvm_vcpu_init_sve() clamps only the upper bound of the host-provided sve_max_vl, so an invalid vector length reaches sve_state_size_from_vl() and the WARN_ON() there, which is fatal at EL2. The existing !sve_state_size test rejects such a length, but only after the macro has run. Check sve_vl_valid() before deriving the state size. A valid length cannot yield a zero size, so the !sve_state_size test goes with it.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
5db1bef933427aa467ad89c7b695a84a6b4afe16 to < faf66e55e87498ab4bf88cdf9a629e61b3f2d3bcaffected5db1bef933427aa467ad89c7b695a84a6b4afe16 to < bae3e4493046de4fefa15f809d9b8dc114e84a3daffected5db1bef933427aa467ad89c7b695a84a6b4afe16 to < 2a2eb10795a1e495aebc7f829ccecb72c05b4fd9affected
Linux Linux
Default version status: affected
6.16affected0 to < 6.16unaffected6.18.55 to ≤ 6.18.*unaffected7.2.9 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected