CVE-2026-23054: net: hv_netvsc: reject RSS hash key programming without RX indirection table
Vulnerability summary
CVE-2026-23054 is a medium (CVSS 6.7) vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.8% of scored vulnerabilities.
Not severe (CVSS 6.7, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 35 · Related 30Timeline
- 04-02-2026PublishedVulnerability first disclosed.
- 15-10-2026Last modifiedVulnerability information updated.
Description
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 metrics
1 score · 1 source · 1 versionEPSS trend
Probability
0.21%
Chance of exploitation in the next 30 days
Percentile
11%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.20% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu156 products
- linuxAll versions (No fix recorded) | < 6.8.0-117.117
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 6.8.0-1055.58
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.8-1
Linux1 product
- linux≥ 962f3fee83a4ef9010ae84dc43ae7aecb572e2a9, < 8288136f508e78eb3563e7073975999cf225a2f9 | ≥ 962f3fee83a4ef9010ae84dc43ae7aecb572e2a9, < 82c9039c8ebb715753a40434df714f865a3aec9c | ≥ 962f3fee83a4ef9010ae84dc43ae7aecb572e2a9, < 4cd55c609e85ae2313248ef1a33619a3eef44a16 | ≥ 962f3fee83a4ef9010ae84dc43ae7aecb572e2a9, < 11dd9a9ef4dc4507a15a69b8511a0013c6c28fa3 | ≥ 962f3fee83a4ef9010ae84dc43ae7aecb572e2a9, < d23564955811da493f34412d7de60fa268c8cb50 | 4.11
3 vendors · 158 products
