In the Linux kernel, the following vulnerability has been resolved: kvm: LAPIC: Restore guard to prevent illegal APIC register access Per the SDM, “any access that touches bytes 4 through 15 of an APIC register may cause undefined behavior and must not be executed.” Worse, such an access in kvm_lapic_reg_read can result in a leak of kernel stack contents. Prior to commit 01402cf81051 (“kvm: LAPIC: write down valid APIC registers”), such an access was explicitly disallowed. Restore the guard that was removed in that commit.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | linux | < 5.10.46-1 | linux_5.10.46-1_all.deb |
Debian | 11 | all | linux | < 5.10.46-1 | linux_5.10.46-1_all.deb |
Debian | 10 | all | linux | < 4.19.249-2 | linux_4.19.249-2_all.deb |
Debian | 999 | all | linux | < 5.10.46-1 | linux_5.10.46-1_all.deb |
Debian | 13 | all | linux | < 5.10.46-1 | linux_5.10.46-1_all.deb |