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CVE-2026-98359: RDMA/core: Reject unregistering netdevs in ib_get_eth_speed

Received
AliasesUBUNTU-CVE-2026-98359DEBIAN-CVE-2026-98359
Published 06-10-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-98359 is a high (CVSS 7.0) vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.0/10
010
High · v3.1 (CVE.org)
EPSS score
0.12%
0%100%
Low · Change unavailable
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 16 · Related 16
OPENSUSE-SU-2026:12131-1OPENSUSE-SU-2026:22167-1SUSE-SU-2026:24371-1SUSE-SU-2026:24379-1SUSE-SU-2026:24386-1SUSE-SU-2026:24422-1

Timeline

  1. 06-10-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Reject unregistering netdevs in ib_get_eth_speed ib_device_get_netdev() intentionally returns a referenced net_device even when it is unregistering, so matching and cleanup callers can still find the association. The reference keeps struct net_device allocated, but does not guarantee that the device remains operational. ib_get_eth_speed() uses the returned device operationally by invoking its ethtool callback. Although that call is made under RTNL, the function does not verify the registration state first. An asynchronous RDMA port query can therefore call into a netdev after NETDEV_UNREGISTER and ndo_uninit have completed. Check for NETREG_REGISTERED while holding RTNL and return -ENODEV for a device which is being unregistered. Keeping RTNL across the check and the ethtool operation prevents unregister from starting between them. Keep the speed fallback and warning under RTNL as well, so the warning can safely read netdev->name. Drop the netdev reference before releasing RTNL once all accesses to the device are complete.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

06-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu168 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.113-1 | < 7.2.8-1
  • linux-6.12< 6.12.113-1~deb12u1
Linux1 product
  • linux≥ d41861942fc55c14b6280d9568a0d0112037f065, < be4b44c8b47c67a04c08b1a0aba18006b749ae6a | ≥ d41861942fc55c14b6280d9568a0d0112037f065, < 45c60ffc79771bad154f224a05753191cf1b37bc | ≥ d41861942fc55c14b6280d9568a0d0112037f065, < 520cd057f138ed8dbe8e05f0eae3a8ed4c5d3a5e | ≥ d41861942fc55c14b6280d9568a0d0112037f065, < a219459fbd1b2598e63c81a52847eba6c28b72d2 | ≥ d41861942fc55c14b6280d9568a0d0112037f065, < 5bd42f74ec3b4f4687fb600f367af0828d513b3c | ≥ d41861942fc55c14b6280d9568a0d0112037f065, < ef9fbe1b93f3b617b96e86d5cd76b3fa44514cb5 | 4.14

3 vendors · 171 products

References

10 links