CVE-2022-50185

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

HIGH

7.8

CVSS Score

Published: June 18, 2025 at 11:03 AM UTC

Updated: June 17, 2026 at 05:22 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.3%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.11 ≤ v < 4.14.2913.11 ≤ v < 4.19.2563.11 ≤ v < 5.10.1373.11 ≤ v < 5.15.613.11 ≤ v < 5.18.183.11 ≤ v < 5.19.23.11 ≤ v < 5.4.2113.11 ≤ v < 6.04.15 ≤ v < 4.19.2564.20 ≤ v < 5.4.2115.11 ≤ v < 5.15.615.16 ≤ v < 5.18.185.19 ≤ v < 5.19.25.5 ≤ v < 5.10.1373.1169e0b57a91adca2e3eb56ed4db39ab90f3ae1043

Vendor states this is fixed in 136f614931a2bb73616b292cf542da3a18daefd5 (fixed)

Vendor states this is fixed in 1f341053852be76f82610ce47a505d930512f05c (fixed)

Vendor states this is fixed in 782e413e38dffd37cc85b08b1ccb982adb4a93ce (fixed)

Vendor states this is fixed in 8508d6d23a247c29792ce2fc0df3f3404d6a6a80 (fixed)

Vendor states this is fixed in 9faff03617afeced1c4e5daa89e79b3906374342 (fixed)

Vendor states this is fixed in db1a9add3f90ff1c641974d5bb910c16b87af4ef (fixed)

Vendor states this is fixed in deb603c5928e546609c0d5798e231d0205748943 (fixed)

Vendor states this is fixed in ea73869df6ef386fc0feeb28ff66742ca835b18f (fixed)

Vendor states this is fixed in 3.11 (unaffected)

Vendor states this is fixed in 4.14.291 (unaffected)

Vendor states this is fixed in 4.19.256 (unaffected)

Vendor states this is fixed in 5.10.137 (unaffected)