Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 before 1c5b4f76cd73372c5a8a4c91c95d5a31f141e091; affected 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 before 06b62758f81e27ca4c81201c22e3436c6d9ac894; affected 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 before d809cf3f0ed9255abfc73c4730bcf187151422af; affected 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 before 0b0122fcc923a0271130f5fb71af2cd7e20434d9; affected 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 before ce8dfd32a33b578c3abf178f67b4c8d36854f041; affected 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 before 4599311e78e88c893ad551aca622de2bfdf1c31f; affected 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 before c75ee076fa09778a2f9602a972dade4a0b0785f7; affected 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 before 03826bc1fa6c90405bf05831f2b501a8368dcd27 |
| Linux / Linux | affected 4.14; unaffected 0 before 4.14; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
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