CVE-2026-23054
In the Linux kernel, the following vulnerability has been resolved: net: hv_netvsc: reject RSS hash key programming without RX indirection table RSS configuration requires a valid RX indirection table. When the device reports a single receive queue, rndis_filter_device_add() does not allocate an indirection table, accepting RSS hash key updates in this state leads to a hang. Fix this by gating netvsc_set_rxfh() on ndc->rx_table_sz and return -EOPNOTSUPP when the table is absent. This aligns set_rxfh with the device capabilities and prevents incorrect behavior.
Affected versions
Linux kernel versions
4.11
and later are affected. Fixed in
6.1.162,
6.6.122,
6.12.67,
6.18.7,
6.19
and their respective stable series.
References
The following references provide additional information about CVE-2026-23054 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/11dd9a9ef4dc4507a15a69b8511a0013c6c28fa3
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PatchKernel patch commithttps://git.kernel.org/stable/c/4cd55c609e85ae2313248ef1a33619a3eef44a16
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PatchKernel patch commithttps://git.kernel.org/stable/c/8288136f508e78eb3563e7073975999cf225a2f9
Frequently asked questions
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What is CVE-2026-23054?
CVE-2026-23054 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.11 onward and has been patched in 6.1.162, 6.6.122, 6.12.67 and others. CVE-2026-23054 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-23054?
Yes — CVE-2026-23054 has been patched. Fixed versions include 6.1.162, 6.6.122, 6.12.67 and others. If you are running Linux kernel 4.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-23054 actively exploited?
No — CVE-2026-23054 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.