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ubuntucveUbuntu.comUB:CVE-2024-26784
HistoryApr 04, 2024 - 12:00 a.m.

CVE-2024-26784

2024-04-0400:00:00
ubuntu.com
ubuntu.com
7
linux kernel
vulnerability resolved
null dereference
scmi_perf_domain removal
code trace
system test
power domain cells
dt property

6.6 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.0%

In the Linux kernel, the following vulnerability has been resolved:
pmdomain: arm: Fix NULL dereference on scmi_perf_domain removal On
unloading of the scmi_perf_domain module got the below splat, when in the
DT provided to the system under test the ‘#power-domain-cells’ property was
missing. Indeed, this particular setup causes the probe to bail out early
without giving any error, which leads to the ->remove() callback gets to
run too, but without all the expected initialized structures in place. Add
a check and bail out early on remove too. Call trace:
scmi_perf_domain_remove+0x28/0x70 [scmi_perf_domain]
scmi_dev_remove+0x28/0x40 [scmi_core] device_remove+0x54/0x90
device_release_driver_internal+0x1dc/0x240 driver_detach+0x58/0xa8
bus_remove_driver+0x78/0x108 driver_unregister+0x38/0x70
scmi_driver_unregister+0x28/0x180 [scmi_core]
scmi_perf_domain_driver_exit+0x18/0xb78 [scmi_perf_domain]
__arm64_sys_delete_module+0x1a8/0x2c0 invoke_syscall+0x50/0x128
el0_svc_common.constprop.0+0x48/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x34/0xb8
el0t_64_sync_handler+0x100/0x130 el0t_64_sync+0x190/0x198 Code: a90153f3
f9403c14 f9414800 955f8a05 (b9400a80) —[ end trace 0000000000000000 ]—

6.6 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.0%