CVE-2026-80610net: enetc: fix potential divide-by-zero when num_vsi is zero
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: net: enetc: fix potential divide-by-zero when num_vsi is zero For i.MX94 series, all the standalone ENETCs do not support SR-IOV, so pf->caps.num_vsi is zero. This leads to a divide-by-zero in enetc4_default_rings_allocation() when distributing rings among PF and VFs. Division by zero is undefined behavior in C. On ARM64, the UDIV/SDIV instructions silently return zero rather than raising an exception, so the issue does not cause a visible crash. However, relying on this behavior is incorrect and poses a cross-platform compatibility risk. Add an explicit check for num_vsi == 0 and return early after the PF's rings have been configured.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 2d673b0e2f8d75b66aa21e5ca5d95c415dec5be7 before cd37bcb67f909a8683cc8c38a63ac7367a7f6161; from 2d673b0e2f8d75b66aa21e5ca5d95c415dec5be7 before 5da65537792b68b6052ffcab65e04c27aea6dfe4 | CNA record |
References
- https://git.kernel.org/stable/c/cd37bcb67f909a8683cc8c38a63ac7367a7f6161
- https://git.kernel.org/stable/c/5da65537792b68b6052ffcab65e04c27aea6dfe4
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.