CVE-2022-50185

published 2025-06-18

CVE-2022-50185: In the Linux kernel, the following vulnerability has been resolved: drm/radeon: fix potential buffer overflow in ni_set_mc_special_registers() The last case…

Priority P3 40 high 7.8 CVSS 3.1

AV L AC L PR L UI N S U C H I H A H

In the Linux kernel, the following vulnerability has been resolved:

drm/radeon: fix potential buffer overflow in ni_set_mc_special_registers()

The last case label can write two buffers 'mc_reg_address[j]' and
'mc_data[j]' with 'j' offset equal to SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE
since there are no checks for this value in both case labels after the
last 'j++'.

Instead of changing '>' to '>=' there, add the bounds check at the start
of the second 'case' (the first one already has it).

Also, remove redundant last checks for 'j' index bigger than array size.
The expression is always false. Moreover, before or after the patch
'table->last' can be equal to SMC_NISLANDS_MC_REGISTER_ARRAY_SIZE and it
seems it can be a valid value.

Detected using the static analysis tool - Svace.

Affected

21 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.0.2-1 (bookworm)	linux 6.0.2-1 (bookworm)
linux	linux	—	—
linux	linux	>= 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < ea73869df6ef386fc0feeb28ff66742ca835b18f	ea73869df6ef386fc0feeb28ff66742ca835b18f
linux	linux	>= 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < 1f341053852be76f82610ce47a505d930512f05c	1f341053852be76f82610ce47a505d930512f05c
linux	linux	>= 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < db1a9add3f90ff1c641974d5bb910c16b87af4ef	db1a9add3f90ff1c641974d5bb910c16b87af4ef
linux	linux	>= 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < 8508d6d23a247c29792ce2fc0df3f3404d6a6a80	8508d6d23a247c29792ce2fc0df3f3404d6a6a80
linux	linux	>= 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < deb603c5928e546609c0d5798e231d0205748943	deb603c5928e546609c0d5798e231d0205748943
linux	linux	>= 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < 782e413e38dffd37cc85b08b1ccb982adb4a93ce	782e413e38dffd37cc85b08b1ccb982adb4a93ce
linux	linux	>= 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < 9faff03617afeced1c4e5daa89e79b3906374342	9faff03617afeced1c4e5daa89e79b3906374342
linux	linux	>= 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 < 136f614931a2bb73616b292cf542da3a18daefd5	136f614931a2bb73616b292cf542da3a18daefd5
linux	linux_kernel	>= 0 < 5.10.140-1	5.10.140-1
linux	linux_kernel	>= 0 < 6.0.2-1	6.0.2-1
linux	linux_kernel	>= 0 < 6.0.2-1	6.0.2-1
linux	linux_kernel	>= 0 < 6.0.2-1	6.0.2-1
linux	linux_kernel	>= 3.11 < 4.14.291	4.14.291
linux	linux_kernel	>= 4.15 < 4.19.256	4.19.256
linux	linux_kernel	>= 4.20 < 5.4.211	5.4.211
linux	linux_kernel	>= 5.11 < 5.15.61	5.15.61
linux	linux_kernel	>= 5.16 < 5.18.18	5.18.18
linux	linux_kernel	>= 5.19 < 5.19.2	5.19.2
linux	linux_kernel	>= 5.5 < 5.10.137	5.10.137

CVSS provenance

nvd v3.1 7.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

osv 7.8 HIGH

vendor_debian 7.8 HIGH

vendor_redhat 7.8 HIGH

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