CVE-2026-89730

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89730", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.760Z", "datePublished": "2026-09-11T19:46:40.581Z", "dateUpdated": "2026-10-19T08:51:43.578Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:51:43.578Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/fpga/altera-cvp.c"], "versions": [{"version": "34d1dc17ce978ae76e676d401b48fe9d004aa948", "lessThan": "447b3c893987a0106a65f04b62ec3271892e9d98", "status": "affected", "versionType": "git"}, {"version": "34d1dc17ce978ae76e676d401b48fe9d004aa948", "lessThan": "3b8938f5fbcf4a918785f9cb4b108782eb4ea717", "status": "affected", "versionType": "git"}, {"version": "34d1dc17ce978ae76e676d401b48fe9d004aa948", "lessThan": "2564ac3d3b8b47cd9692a5bf42d668ed7218b54e", "status": "affected", "versionType": "git"}, {"version": "34d1dc17ce978ae76e676d401b48fe9d004aa948", "lessThan": "8f3365ed2a5db2ac95ab70a6c47561db39d24537", "status": "affected", "versionType": "git"}, {"version": "34d1dc17ce978ae76e676d401b48fe9d004aa948", "lessThan": "b138bc665e21d4422382ab43aebdf0a2b7bb9cb3", "status": "affected", "versionType": "git"}, {"version": "34d1dc17ce978ae76e676d401b48fe9d004aa948", "lessThan": "827ec385458adeeda651de2b6f3537e386b1a8d9", "status": "affected", "versionType": "git"}, {"version": "34d1dc17ce978ae76e676d401b48fe9d004aa948", "lessThan": "4dc1051939e499c838229af035464a5fc7671198", "status": "affected", "versionType": "git"}, {"version": "34d1dc17ce978ae76e676d401b48fe9d004aa948", "lessThan": "9da70a43b5fea60d758137f7f0ccfe19356cb5bb", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/fpga/altera-cvp.c"], "versions": [{"version": "4.14", "status": "affected"}, {"version": "0", "lessThan": "4.14", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.10.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/447b3c893987a0106a65f04b62ec3271892e9d98"}, {"url": "https://git.kernel.org/stable/c/3b8938f5fbcf4a918785f9cb4b108782eb4ea717"}, {"url": "https://git.kernel.org/stable/c/2564ac3d3b8b47cd9692a5bf42d668ed7218b54e"}, {"url": "https://git.kernel.org/stable/c/8f3365ed2a5db2ac95ab70a6c47561db39d24537"}, {"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"}}}}

{}

{"affected": [{"affectedData": [{"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": "447b3c893987a0106a65f04b62ec3271892e9d98", "status": "affected", "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948", "versionType": "git"}, {"lessThan": "3b8938f5fbcf4a918785f9cb4b108782eb4ea717", "status": "affected", "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948", "versionType": "git"}, {"lessThan": "2564ac3d3b8b47cd9692a5bf42d668ed7218b54e", "status": "affected", "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948", "versionType": "git"}, {"lessThan": "8f3365ed2a5db2ac95ab70a6c47561db39d24537", "status": "affected", "version": "34d1dc17ce978ae76e676d401b48fe9d004aa948", "versionType": "git"}, {"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": "5.10.*", "status": "unaffected", "version": "5.10.270", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-89730", "lastModified": "2026-10-19T09:18:15.343", "metrics": {}, "published": "2026-09-11T20:20:03.363", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2564ac3d3b8b47cd9692a5bf42d668ed7218b54e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3b8938f5fbcf4a918785f9cb4b108782eb4ea717"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/447b3c893987a0106a65f04b62ec3271892e9d98"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8f3365ed2a5db2ac95ab70a6c47561db39d24537"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: Out-of-bounds read in altera-cvp FPGA driver can lead to system crash", "id": "2532368", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532368"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["A flaw was found in the `altera-cvp` FPGA driver within the Linux kernel. The `altera_cvp_send_block()` function can perform an out-of-bounds read when processing the trailing bytes of an input buffer. This occurs if the buffer ends at a page or scatterlist boundary, causing the function to read past valid image data. A local attacker could potentially exploit this to trigger a system fault, leading to a denial of service."], "name": "CVE-2026-89730", "public_date": "2026-09-11T19:46:40Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89730\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89730\nhttps://git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198\nhttps://git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9\nhttps://git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb\nhttps://git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[34d1dc17ce978ae76e676d401b48fe9d004aa948,b138bc665e21d4422382ab43aebdf0a2b7bb9cb3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[34d1dc17ce978ae76e676d401b48fe9d004aa948,827ec385458adeeda651de2b6f3537e386b1a8d9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[34d1dc17ce978ae76e676d401b48fe9d004aa948,4dc1051939e499c838229af035464a5fc7671198)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[34d1dc17ce978ae76e676d401b48fe9d004aa948,9da70a43b5fea60d758137f7f0ccfe19356cb5bb)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.14"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.14)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.109,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.50,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-12T09:30:13.015813+00:00", "updated": "2026-09-15T19:30:12.138068+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}