{"id":"CVE-2026-90416","summary":"RDMA/mlx5: Fix stack out-of-bounds read in cc_params debugfs","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/mlx5: Fix stack out-of-bounds read in cc_params debugfs\n\nget_param() reads a congestion parameter as a u32 but formats it with the\nsigned \"%d\" into an 11-byte stack buffer. A value with bit 31 set, such as\n0x80000000, renders as \"-2147483648\\n\" whose full length is 12. snprintf()\nstores only 11 bytes yet returns 12, so simple_read_from_buffer() treats 12\nbytes as valid and reads one byte past lbuf[].\n\nSize the buffer for the widest unsigned decimal, format with \"%u\" to match\nthe u32, and use scnprintf() so the length passed to\nsimple_read_from_buffer() reflects the bytes actually stored.","modified":"2026-09-18T03:48:38.377198965Z","published":"2026-09-17T16:09:41.372Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90416.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/03826bc1fa6c90405bf05831f2b501a8368dcd27"},{"type":"WEB","url":"https://git.kernel.org/stable/c/06b62758f81e27ca4c81201c22e3436c6d9ac894"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0b0122fcc923a0271130f5fb71af2cd7e20434d9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1c5b4f76cd73372c5a8a4c91c95d5a31f141e091"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4599311e78e88c893ad551aca622de2bfdf1c31f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c75ee076fa09778a2f9602a972dade4a0b0785f7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ce8dfd32a33b578c3abf178f67b4c8d36854f041"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d809cf3f0ed9255abfc73c4730bcf187151422af"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90416.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90416"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4a2da0b8c0782816f3ae6846ae7942fcbb0f8172"},{"fixed":"1c5b4f76cd73372c5a8a4c91c95d5a31f141e091"},{"fixed":"06b62758f81e27ca4c81201c22e3436c6d9ac894"},{"fixed":"d809cf3f0ed9255abfc73c4730bcf187151422af"},{"fixed":"0b0122fcc923a0271130f5fb71af2cd7e20434d9"},{"fixed":"ce8dfd32a33b578c3abf178f67b4c8d36854f041"},{"fixed":"4599311e78e88c893ad551aca622de2bfdf1c31f"},{"fixed":"c75ee076fa09778a2f9602a972dade4a0b0785f7"},{"fixed":"03826bc1fa6c90405bf05831f2b501a8368dcd27"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90416.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.14.0"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90416.json"}}],"schema_version":"1.9.0"}