VulnerabilityPublished 25 Mar 2026Updated 5 Nov 2026

CVE-2026-23289: Linux kernel · IB/mthca: Add missed mthca_unmap_user_db() for mthca_create_srq()

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f67f1ad4029e9fa183141546de31987b254c9292 : update Linux kernel when convenient.

Data as of 5 Nov 2026, 23:24 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

EPSS

0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in f67f1ad4029e9fa183141546de31987b254c9292, deee46b37ebd8cc5ff810127883fca90f2412a7b, da8eaa73bc37d004350ba68eb18b6ade8e49db52 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ ec34a922d243c3401a694450734e9effb2bafbfe, < f67f1ad4029e9fa183141546de31987b254c9292	Fixed in f67f1ad4029e9fa183141546de31987b254c9292
LinuxLinux	Affected ≥ ec34a922d243c3401a694450734e9effb2bafbfe, < deee46b37ebd8cc5ff810127883fca90f2412a7b	Fixed in deee46b37ebd8cc5ff810127883fca90f2412a7b
LinuxLinux	Affected ≥ ec34a922d243c3401a694450734e9effb2bafbfe, < da8eaa73bc37d004350ba68eb18b6ade8e49db52	Fixed in da8eaa73bc37d004350ba68eb18b6ade8e49db52
LinuxLinux	Affected ≥ ec34a922d243c3401a694450734e9effb2bafbfe, < d0148965dbca8cc8efa7e3d6e99940487bf661c0	Fixed in d0148965dbca8cc8efa7e3d6e99940487bf661c0
LinuxLinux	Affected ≥ ec34a922d243c3401a694450734e9effb2bafbfe, < 117942ca43e2e3c3d121faae530989931b7f67e1	Fixed in 117942ca43e2e3c3d121faae530989931b7f67e1
LinuxLinux	Affected ≥ ec34a922d243c3401a694450734e9effb2bafbfe, < 972b72d7e2d8fe1400f1c7a8304c282c539b7e02	Fixed in 972b72d7e2d8fe1400f1c7a8304c282c539b7e02

Description

In the Linux kernel, the following vulnerability has been resolved: IB/mthca: Add missed mthca_unmap_user_db() for mthca_create_srq() Fix a user triggerable leak on the system call failure path.

References

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