CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
5.0%
In the Linux kernel, the following vulnerability has been resolved:
powerpc/pseries: Fix scv instruction crash with kexec
kexec on pseries disables AIL (reloc_on_exc), required for scv
instruction support, before other CPUs have been shut down. This means
they can execute scv instructions after AIL is disabled, which causes an
interrupt at an unexpected entry location that crashes the kernel.
Change the kexec sequence to disable AIL after other CPUs have been
brought down.
As a refresher, the real-mode scv interrupt vector is 0x17000, and the
fixed-location head code probably couldn’t easily deal with implementing
such high addresses so it was just decided not to support that interrupt
at all.
Vendor | Product | Version | CPE |
---|---|---|---|
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
linux | linux_kernel | 6.10 | cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* |
linux | linux_kernel | 6.10 | cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:* |
linux | linux_kernel | 6.10 | cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:* |
linux | linux_kernel | 6.10 | cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:* |
linux | linux_kernel | 6.10 | cpe:2.3:o:linux:linux_kernel:6.10:rc5:*:*:*:*:*:* |
linux | linux_kernel | 6.10 | cpe:2.3:o:linux:linux_kernel:6.10:rc6:*:*:*:*:*:* |