VulnerabilityPublished 22 Apr 2026Updated 21 Oct 2026

CVE-2026-31487: Linux kernel · spi: use generic driver_override infrastructure

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:18 UTC

Severity

Unrated

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0, e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0, cc34d77dd48708d810c12bfd6f5bf03304f6c824 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 22 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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 ≥ 5039563e7c25eccd7fec1de6706011009d1c5665, < eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0	Fixed in eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0
LinuxLinux	Affected ≥ 5039563e7c25eccd7fec1de6706011009d1c5665, < e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0	Fixed in e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0
LinuxLinux	Affected ≥ 5039563e7c25eccd7fec1de6706011009d1c5665, < cc34d77dd48708d810c12bfd6f5bf03304f6c824	Fixed in cc34d77dd48708d810c12bfd6f5bf03304f6c824
LinuxLinux	Affected ≥ 5039563e7c25eccd7fec1de6706011009d1c5665, < c73a58661a760373d08a6883af4f0bb5cc991a67	Fixed in c73a58661a760373d08a6883af4f0bb5cc991a67
LinuxLinux	Affected ≥ 5039563e7c25eccd7fec1de6706011009d1c5665, < 6e8eb467bed6aa1a563dba8f366c9fd76ba0004e	Fixed in 6e8eb467bed6aa1a563dba8f366c9fd76ba0004e
LinuxLinux	Affected =4.20	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: spi: use generic driver_override infrastructure When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1] Also note that we do not enable the driver_override feature of struct bus_type, as SPI - in contrast to most other buses - passes "" to sysfs_emit() when the driver_override pointer is NULL. Thus, printing "\n" instead of "(null)\n".

References

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