CVE-2026-90416
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
RDMA/mlx5: Fix stack out-of-bounds read in cc_params debugfs
get_param() reads a congestion parameter as a u32 but formats it with the
signed '%d' into an 11-byte stack buffer. A value with bit 31 set, such as
0x80000000, renders as '-2147483648\n' whose full length is 12. snprintf()
stores only 11 bytes yet returns 12, so simple_read_from_buffer() treats 12
bytes as valid and reads one byte past lbuf[].
Size the buffer for the widest unsigned decimal, format with '%u' to match
the u32, and use scnprintf() so the length passed to
simple_read_from_buffer() reflects the bytes actually stored.
https://git.kernel.org/stable/c/03826bc1fa6c90405bf05831f2b501a8368dcd27
https://git.kernel.org/stable/c/06b62758f81e27ca4c81201c22e3436c6d9ac894
https://git.kernel.org/stable/c/0b0122fcc923a0271130f5fb71af2cd7e20434d9
https://git.kernel.org/stable/c/1c5b4f76cd73372c5a8a4c91c95d5a31f141e091
https://git.kernel.org/stable/c/4599311e78e88c893ad551aca622de2bfdf1c31f
https://git.kernel.org/stable/c/c75ee076fa09778a2f9602a972dade4a0b0785f7
https://git.kernel.org/stable/c/ce8dfd32a33b578c3abf178f67b4c8d36854f041
https://git.kernel.org/stable/c/d809cf3f0ed9255abfc73c4730bcf187151422af