Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 to < 1c5b4f76cd73372c5a8a4c91c95d5a31f141e091affected4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 to < 06b62758f81e27ca4c81201c22e3436c6d9ac894affected4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 to < d809cf3f0ed9255abfc73c4730bcf187151422afaffected4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 to < 0b0122fcc923a0271130f5fb71af2cd7e20434d9affected4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 to < ce8dfd32a33b578c3abf178f67b4c8d36854f041affected4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 to < 4599311e78e88c893ad551aca622de2bfdf1c31faffected4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 to < c75ee076fa09778a2f9602a972dade4a0b0785f7affected4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 to < 03826bc1fa6c90405bf05831f2b501a8368dcd27affected
Linux Linux
Default version status: affected
4.14affected0 to < 4.14unaffected5.10.270 to ≤ 5.10.*unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.110 to ≤ 6.12.*unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/1c5b4f76cd73372c5a8a4c91c95d5a31f141e091 ↗
- https://git.kernel.org/stable/c/06b62758f81e27ca4c81201c22e3436c6d9ac894 ↗
- https://git.kernel.org/stable/c/d809cf3f0ed9255abfc73c4730bcf187151422af ↗
- https://git.kernel.org/stable/c/0b0122fcc923a0271130f5fb71af2cd7e20434d9 ↗
- https://git.kernel.org/stable/c/ce8dfd32a33b578c3abf178f67b4c8d36854f041 ↗
- https://git.kernel.org/stable/c/4599311e78e88c893ad551aca622de2bfdf1c31f ↗
- https://git.kernel.org/stable/c/c75ee076fa09778a2f9602a972dade4a0b0785f7 ↗
- https://git.kernel.org/stable/c/03826bc1fa6c90405bf05831f2b501a8368dcd27 ↗