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ubuntucveUbuntu.comUB:CVE-2021-47042
HistoryFeb 28, 2024 - 12:00 a.m.

CVE-2021-47042

2024-02-2800:00:00
ubuntu.com
ubuntu.com
8
linux kernel
display vulnerability
memory leak
fix
amdgpu
pci probe
unix

6.5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.1%

In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Free local data after use Fixes the following memory leak
in dc_link_construct(): unreferenced object 0xffffa03e81471400 (size 1024):
comm “amd_module_load”, pid 2486, jiffies 4294946026 (age 10.544s) hex dump
(first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
… 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
… backtrace: [<000000000bdf5c4a>]
kmem_cache_alloc_trace+0x30a/0x4a0 [<00000000e7c59f0e>]
link_create+0xce/0xac0 [amdgpu] [<000000002fb6c072>] dc_create+0x370/0x720
[amdgpu] [<000000000094d1f3>] amdgpu_dm_init+0x18e/0x17a0 [amdgpu]
[<00000000bec048fd>] dm_hw_init+0x12/0x20 [amdgpu] [<00000000a2bb7cf6>]
amdgpu_device_init+0x1463/0x1e60 [amdgpu] [<0000000032d3bb13>]
amdgpu_driver_load_kms+0x5b/0x330 [amdgpu] [<00000000a27834f9>]
amdgpu_pci_probe+0x192/0x280 [amdgpu] [<00000000fec7d291>]
local_pci_probe+0x47/0xa0 [<0000000055dbbfa7>] pci_device_probe+0xe3/0x180
[<00000000815da970>] really_probe+0x1c4/0x4e0 [<00000000b4b6974b>]
driver_probe_device+0x62/0x150 [<000000000f9ecc61>]
device_driver_attach+0x58/0x60 [<000000000f65c843>]
__driver_attach+0xd6/0x150 [<000000002f5e3683>] bus_for_each_dev+0x6a/0xc0
[<00000000a1cfc897>] driver_attach+0x1e/0x20

6.5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.1%