CVE-2026-31389

HIGHNVD 7.87.8—

7.8

In the Linux kernel, the following vulnerability has been resolved:

spi: fix use-after-free on controller registration failure

Make sure to deregister from driver core also in the unlikely event that per-cpu statistics allocation fails during controller registration to avoid use-after-free (of driver resources) and unclocked register accesses.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 3.6%
KEV: Not listed

Published

April 3, 2026

Last Modified

May 20, 2026

Advisory Details (6)

Auto-updated May 20, 2026

No patch confirmed yet.

generic

spi: fix use-after-free on controller registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/afe27c1f43aa57530011f419be6ddf71306565d2

generic

spi: fix use-after-free on controller registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8634e05b08ead636e926022f4a98416e13440df9

generic

spi: fix use-after-free on controller registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/80f3e8cd2b4ad355b2ad2024cf423f6d183404f7

generic

spi: fix use-after-free on controller registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6bbd385b30c7fb6c7ee0669e9ada91490938c051

generic

spi: fix use-after-free on controller registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/23b51bad2eb8787aa74324cfccefb258515ae5ba

generic

spi: fix use-after-free on controller registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0e23f50086da7d0b183dfeac26021acfcdee086b

Vendor Advisories for CVE-2026-31389(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-7jq8-3vqq-qc62
GitHub Security AdvisoriesHigh
In the Linux kernel, the following vulnerability has been resolved: spi: fix use-after-free on...

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-416Use After Free

Data Freshness Timeline

(refreshed 17× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 16:59 UTCepss_batch
2026-05-23 15:21 UTCepss_batch
2026-05-22 21:16 UTCepss_batch

Frequently asked(5)

What is CVE-2026-31389?

CVE-2026-31389 is a high vulnerability published on April 3, 2026. In the Linux kernel, the following vulnerability has been resolved: spi: fix use-after-free on controller registration failure Make sure to deregister from driver core also in the unlikely event that per-cpu statistics allocation fails during controller registration to avoid use-after-free (of…

When was CVE-2026-31389 disclosed?

CVE-2026-31389 was first published in the National Vulnerability Database on April 3, 2026, with the most recent update on May 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-31389 actively exploited?

CVE-2026-31389 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-31389?

CVE-2026-31389 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2026-31389?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31389, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-31389

Explore →

Is Your Infrastructure Affected by CVE-2026-31389?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2026-31389

📅 Published

🔄 Last Modified

📋 Advisory Details (6)

spi: fix use-after-free on controller registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

spi: fix use-after-free on controller registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

spi: fix use-after-free on controller registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

spi: fix use-after-free on controller registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

spi: fix use-after-free on controller registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

spi: fix use-after-free on controller registration failure - kernel/git/stable/linux.git - Linux kernel stable tree

📣 Vendor Advisories for CVE-2026-31389(1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-31389?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

Advisory Details (6)

Vendor Advisories for CVE-2026-31389(1)

Frequently asked(5)

Related CVEs(same CWE)