Not yet scoredPublished Feb 4, 2026

CVE-2026-23054net: hv_netvsc: reject RSS hash key programming without RX indirection table

Updated under an hour ago (Oct 27, 2026, 9:30 PM ET)

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Exploited in the last 30 days

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.

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: Deferred
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 962f3fee83a4ef9010ae84dc43ae7aecb572e2a9 before 8288136f508e78eb3563e7073975999cf225a2f9; 962f3fee83a4ef9010ae84dc43ae7aecb572e2a9 builds before 82c9039c8ebb715753a40434df714f865a3aec9c; 962f3fee83a4ef9010ae84dc43ae7aecb572e2a9 builds before 4cd55c609e85ae2313248ef1a33619a3eef44a16; 962f3fee83a4ef9010ae84dc43ae7aecb572e2a9 builds before 11dd9a9ef4dc4507a15a69b8511a0013c6c28fa3; from 962f3fee83a4ef9010ae84dc43ae7aecb572e2a9 before d23564955811da493f34412d7de60fa268c8cb50	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP

References

References

https://git.kernel.org/stable/c/8288136f508e78eb3563e7073975999cf225a2f9
https://git.kernel.org/stable/c/82c9039c8ebb715753a40434df714f865a3aec9c
https://git.kernel.org/stable/c/4cd55c609e85ae2313248ef1a33619a3eef44a16
https://git.kernel.org/stable/c/11dd9a9ef4dc4507a15a69b8511a0013c6c28fa3
https://git.kernel.org/stable/c/d23564955811da493f34412d7de60fa268c8cb50
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-457936.html

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.