{"api_version":"1","generated_at":"2026-08-28T13:22:09+00:00","cve":"CVE-2026-80610","urls":{"html":"https://cve.report/CVE-2026-80610","api":"https://cve.report/api/cve/CVE-2026-80610.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80610","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80610"},"summary":{"title":"net: enetc: fix potential divide-by-zero when num_vsi is zero","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: enetc: fix potential divide-by-zero when num_vsi is zero\n\nFor i.MX94 series, all the standalone ENETCs do not support SR-IOV, so\npf->caps.num_vsi is zero. This leads to a divide-by-zero in\nenetc4_default_rings_allocation() when distributing rings among PF and\nVFs.\n\nDivision by zero is undefined behavior in C. On ARM64, the UDIV/SDIV\ninstructions silently return zero rather than raising an exception, so\nthe issue does not cause a visible crash. However, relying on this\nbehavior is incorrect and poses a cross-platform compatibility risk.\n\nAdd an explicit check for num_vsi == 0 and return early after the PF's\nrings have been configured.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-28 08:16:44","updated_at":"2026-08-28 08:16:44"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/cd37bcb67f909a8683cc8c38a63ac7367a7f6161","name":"https://git.kernel.org/stable/c/cd37bcb67f909a8683cc8c38a63ac7367a7f6161","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5da65537792b68b6052ffcab65e04c27aea6dfe4","name":"https://git.kernel.org/stable/c/5da65537792b68b6052ffcab65e04c27aea6dfe4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80610","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80610","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2d673b0e2f8d75b66aa21e5ca5d95c415dec5be7 cd37bcb67f909a8683cc8c38a63ac7367a7f6161 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2d673b0e2f8d75b66aa21e5ca5d95c415dec5be7 5da65537792b68b6052ffcab65e04c27aea6dfe4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * 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/net/ethernet/freescale/enetc/enetc4_pf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"cd37bcb67f909a8683cc8c38a63ac7367a7f6161","status":"affected","version":"2d673b0e2f8d75b66aa21e5ca5d95c415dec5be7","versionType":"git"},{"lessThan":"5da65537792b68b6052ffcab65e04c27aea6dfe4","status":"affected","version":"2d673b0e2f8d75b66aa21e5ca5d95c415dec5be7","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/freescale/enetc/enetc4_pf.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: enetc: fix potential divide-by-zero when num_vsi is zero\n\nFor i.MX94 series, all the standalone ENETCs do not support SR-IOV, so\npf->caps.num_vsi is zero. This leads to a divide-by-zero in\nenetc4_default_rings_allocation() when distributing rings among PF and\nVFs.\n\nDivision by zero is undefined behavior in C. On ARM64, the UDIV/SDIV\ninstructions silently return zero rather than raising an exception, so\nthe issue does not cause a visible crash. However, relying on this\nbehavior is incorrect and poses a cross-platform compatibility risk.\n\nAdd an explicit check for num_vsi == 0 and return early after the PF's\nrings have been configured."}],"providerMetadata":{"dateUpdated":"2026-08-28T06:48:33.340Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/cd37bcb67f909a8683cc8c38a63ac7367a7f6161"},{"url":"https://git.kernel.org/stable/c/5da65537792b68b6052ffcab65e04c27aea6dfe4"}],"title":"net: enetc: fix potential divide-by-zero when num_vsi is zero","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80610","datePublished":"2026-08-28T06:48:33.340Z","dateReserved":"2026-08-26T14:34:25.773Z","dateUpdated":"2026-08-28T06:48:33.340Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-28 08:16:44","lastModifiedDate":"2026-08-28 08:16:44","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80610","Ordinal":"1","Title":"net: enetc: fix potential divide-by-zero when num_vsi is zero","CVE":"CVE-2026-80610","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80610","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: enetc: fix potential divide-by-zero when num_vsi is zero\n\nFor i.MX94 series, all the standalone ENETCs do not support SR-IOV, so\npf->caps.num_vsi is zero. This leads to a divide-by-zero in\nenetc4_default_rings_allocation() when distributing rings among PF and\nVFs.\n\nDivision by zero is undefined behavior in C. On ARM64, the UDIV/SDIV\ninstructions silently return zero rather than raising an exception, so\nthe issue does not cause a visible crash. However, relying on this\nbehavior is incorrect and poses a cross-platform compatibility risk.\n\nAdd an explicit check for num_vsi == 0 and return early after the PF's\nrings have been configured.","Type":"Description","Title":"net: enetc: fix potential divide-by-zero when num_vsi is zero"}]}}}