CVE-2026-97982: Linux kernel · net: ethernet: cortina: Fix budget accounting
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 13:47 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix has been applied to the Linux kernel to correct the gmac_rx() function's return value and the associated accounting logic. Users should update to the patched versions of the linux-hwe-edge kernel to remediate this issue.
Description
A vulnerability in the Linux kernel's ethernet cortina driver was fixed by correcting the gmac_rx() function's return value handling. The function previously returned the remaining NAPI budget, but its caller misinterpreted this as the number of packets received, causing an idle poll to report a full budget and remain scheduled unnecessarily. The fix returns the actual number of received packets and adjusts the free queue refill accounting accordingly.
References
- ubuntu.com/security/CVE-2026-97982 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97982 (opens in a new tab)
- git.kernel.org/stable/c/94e06e12a376710587cfeea481b65e7c49747003 (opens in a new tab)
- git.kernel.org/stable/c/0ef8eaef5806c84db2334111d6f299c246a592bc (opens in a new tab)
- git.kernel.org/stable/c/631c47e2e1154f2741c555b91df1b8cb99294c6a (opens in a new tab)
- git.kernel.org/stable/c/a0de06d0da78a3db53de65dfd7452cc6d111f703 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97982 (opens in a new tab)
- git.kernel.org/stable/c/4ca84049c6428c665ef7c903a32a99ed0f1e01e9 (opens in a new tab)
- git.kernel.org/stable/c/aa339ac334d4e51f43af9d2901e6faf11ffd981e (opens in a new tab)
- git.kernel.org/stable/c/d3deb54d9507c2d7f05efd896142095eef5b7d85 (opens in a new tab)
- git.kernel.org/stable/c/e6e5732b90d0fc25fd3d9961ff61e660297d7608 (opens in a new tab)