Answer in brief
CVE-2026-90416 records a Unknown severity vulnerability in RDMA/mlx5: Fix stack out-of-bounds read in cc_params debugfs. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 <1c5b4f76cd73372c5a8a4c91c95d5a31f141e091 || >=4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 <06b62758f81e27ca4c81201c22e3436c6d9ac894 || >=4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 <d809cf3f0ed9255abfc73c4730bcf187151422af || >=4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 <0b0122fcc923a0271130f5fb71af2cd7e20434d9 || >=4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 <ce8dfd32a33b578c3abf178f67b4c8d36854f041 || >=4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 <4599311e78e88c893ad551aca622de2bfdf1c31f || >=4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 <c75ee076fa09778a2f9602a972dade4a0b0785f7 || >=4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 <03826bc1fa6c90405bf05831f2b501a8368dcd27 | 1c5b4f76cd73372c5a8a4c91c95d5a31f141e091, 06b62758f81e27ca4c81201c22e3436c6d9ac894, d809cf3f0ed9255abfc73c4730bcf187151422af, 0b0122fcc923a0271130f5fb71af2cd7e20434d9, ce8dfd32a33b578c3abf178f67b4c8d36854f041, 4599311e78e88c893ad551aca622de2bfdf1c31f, c75ee076fa09778a2f9602a972dade4a0b0785f7, 03826bc1fa6c90405bf05831f2b501a8368dcd27 |
| Linux/Linuxgeneric | 4.14 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.