cbcvebase.
CVE-2024-42230
published 2024-07-30

CVE-2024-42230: In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: Fix scv instruction crash with kexec kexec on pseries disables AIL…

PriorityP415medium4.4CVSS 3.1
AVLACLPRHUINSUCNINAH
EPSS
0.21%
10.7th percentile
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.

Affected

19 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.98-1 (bookworm)linux 6.1.98-1 (bookworm)
debianlinux-6.1< linux 6.1.98-1 (bookworm)linux 6.1.98-1 (bookworm)
linuxlinux
linuxlinux>= 7fa95f9adaee7e5cbb195d3359741120829e488b < c550679d604798d9fed8a5b2bb5693448a25407cc550679d604798d9fed8a5b2bb5693448a25407c
linuxlinux>= 7fa95f9adaee7e5cbb195d3359741120829e488b < d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5d10e3c39001e9194b9a1bfd6979bd3fa19dccdc5
linuxlinux>= 7fa95f9adaee7e5cbb195d3359741120829e488b < 8c6506616386ce37e59b2745fc481c6713fae4f38c6506616386ce37e59b2745fc481c6713fae4f3
linuxlinux>= 7fa95f9adaee7e5cbb195d3359741120829e488b < 21a741eb75f80397e5f7d3739e24d7d75e61901121a741eb75f80397e5f7d3739e24d7d75e619011
linuxlinux_kernel
linuxlinux_kernel>= 0 < 6.1.98-16.1.98-1
linuxlinux_kernel>= 0 < 6.9.9-16.9.9-1
linuxlinux_kernel>= 0 < 6.9.9-16.9.9-1
linuxlinux_kernel>= 0 < 5.15.0-142.1525.15.0-142.152
linuxlinux_kernel>= 0 < 6.8.0-48.486.8.0-48.48
linuxlinux_kernel>= 5.9 < 6.1.986.1.98
linuxlinux_kernel6.2 – 6.6.39
linuxlinux_kernel>= 6.7 < 6.9.96.9.9
msrcazl3_kernel_6.6.35.1-5_on_azure_linux_3.0
msrcazl3_kernel_6.6.43.1-7_on_azure_linux_3.0
msrccbl2_kernel_5.15.180.1-1_on_cbl_mariner_2.0

CVSS provenance

nvdv3.14.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian4.4MEDIUM
vendor_msrc4.4MEDIUM
vendor_redhat4.4MEDIUM
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