CVE-2022-50185 | BDVDB-2026-282995 Detail
LinuxLinux
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.
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/ea73869df6ef386fc0feeb28ff66742ca835b18f
- https://git.kernel.org/stable/c/1f341053852be76f82610ce47a505d930512f05c
- https://git.kernel.org/stable/c/db1a9add3f90ff1c641974d5bb910c16b87af4ef
- https://git.kernel.org/stable/c/8508d6d23a247c29792ce2fc0df3f3404d6a6a80
- https://git.kernel.org/stable/c/deb603c5928e546609c0d5798e231d0205748943
- https://git.kernel.org/stable/c/782e413e38dffd37cc85b08b1ccb982adb4a93ce
- https://git.kernel.org/stable/c/9faff03617afeced1c4e5daa89e79b3906374342
- https://git.kernel.org/stable/c/136f614931a2bb73616b292cf542da3a18daefd5
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.