HOMEVULNERABILITIESCVE-2026-31527
HIGH

CVE-2026-31527

Published: April 22, 2026· Updated: Apr 28, 2026

7.8
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.6th

Official Description

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

driver core: platform: 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]

NVD Source

Technical Analysis

CVE-2026-31527 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://git.kernel.org/stable/c/2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d
PATCHhttps://git.kernel.org/stable/c/7c02a9bd7d14a89065fcf672b86d8e1d1a41d3b1
PATCHhttps://git.kernel.org/stable/c/9a6086d2a828dd2ff74cf9abcae456670febd71f
PATCHhttps://git.kernel.org/stable/c/edee7ee5a14c3b33f6d54641f5af5c5e9180992d

All References (4)

→
https://git.kernel.org/stable/c/2b38efc05bf7a8568ec74bfffea0f5cfa62bc01dPatch
→
https://git.kernel.org/stable/c/7c02a9bd7d14a89065fcf672b86d8e1d1a41d3b1Patch
→
https://git.kernel.org/stable/c/9a6086d2a828dd2ff74cf9abcae456670febd71fPatch
→
https://git.kernel.org/stable/c/edee7ee5a14c3b33f6d54641f5af5c5e9180992dPatch

Quick Facts

CVE IDCVE-2026-31527
CVSS Score7.8 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedApr 22, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31527 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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