{"api_version":"1","generated_at":"2026-09-12T02:46:23+00:00","cve":"CVE-2026-89730","urls":{"html":"https://cve.report/CVE-2026-89730","api":"https://cve.report/api/cve/CVE-2026-89730.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89730","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89730"},"summary":{"title":"fpga: altera-cvp: Avoid out-of-bounds read in trailing byte write","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:20:03","updated_at":"2026-09-11 20:20:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9","name":"https://git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3","name":"https://git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb","name":"https://git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198","name":"https://git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89730","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89730","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 b138bc665e21d4422382ab43aebdf0a2b7bb9cb3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 827ec385458adeeda651de2b6f3537e386b1a8d9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 4dc1051939e499c838229af035464a5fc7671198 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 9da70a43b5fea60d758137f7f0ccfe19356cb5bb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.109 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/fpga/altera-cvp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b138bc665e21d4422382ab43aebdf0a2b7bb9cb3","status":"affected","version":"34d1dc17ce978ae76e676d401b48fe9d004aa948","versionType":"git"},{"lessThan":"827ec385458adeeda651de2b6f3537e386b1a8d9","status":"affected","version":"34d1dc17ce978ae76e676d401b48fe9d004aa948","versionType":"git"},{"lessThan":"4dc1051939e499c838229af035464a5fc7671198","status":"affected","version":"34d1dc17ce978ae76e676d401b48fe9d004aa948","versionType":"git"},{"lessThan":"9da70a43b5fea60d758137f7f0ccfe19356cb5bb","status":"affected","version":"34d1dc17ce978ae76e676d401b48fe9d004aa948","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/fpga/altera-cvp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.14"},{"lessThan":"4.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.109","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.109","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"4.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:46:40.581Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3"},{"url":"https://git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9"},{"url":"https://git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198"},{"url":"https://git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb"}],"title":"fpga: altera-cvp: Avoid out-of-bounds read in trailing byte write","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89730","datePublished":"2026-09-11T19:46:40.581Z","dateReserved":"2026-09-11T19:38:34.760Z","dateUpdated":"2026-09-11T19:46:40.581Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:20:03","lastModifiedDate":"2026-09-11 20:20:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89730","Ordinal":"1","Title":"fpga: altera-cvp: Avoid out-of-bounds read in trailing byte writ","CVE":"CVE-2026-89730","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89730","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"fpga: altera-cvp: Avoid out-of-bounds read in trailing byte writ"}]}}}