{"id":"CVE-2026-89730","summary":"fpga: altera-cvp: Avoid out-of-bounds read in trailing byte write","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nfpga: altera-cvp: Avoid out-of-bounds read in trailing byte write\n\nThe trailing byte path in altera_cvp_send_block() dereferences a u32\npointer even when only 1-3 bytes remain in the input buffer. If the buffer\nends at a page or scatterlist boundary, this can read past the valid image\ndata and fault.\n\nCopy the remaining bytes into a zero-initialized u32 before writing the\nfinal word so only valid bytes are read from the input buffer.","modified":"2026-09-13T03:47:20.531672884Z","published":"2026-09-11T19:46:40.581Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89730.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198"},{"type":"WEB","url":"https://git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89730.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89730"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"34d1dc17ce978ae76e676d401b48fe9d004aa948"},{"fixed":"b138bc665e21d4422382ab43aebdf0a2b7bb9cb3"},{"fixed":"827ec385458adeeda651de2b6f3537e386b1a8d9"},{"fixed":"4dc1051939e499c838229af035464a5fc7671198"},{"fixed":"9da70a43b5fea60d758137f7f0ccfe19356cb5bb"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89730.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.14.0"},{"fixed":"6.12.109"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.50"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89730.json"}}],"schema_version":"1.9.0"}