HOMEVULNERABILITIESCVE-2026-31475
HIGH

CVE-2026-31475

Published: April 22, 2026· Updated: Apr 27, 2026

7.8
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.1th

Official Description

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

ASoC: sma1307: fix double free of devm_kzalloc() memory

A previous change added NULL checks and cleanup for allocation

failures in sma1307_setting_loaded().

However, the cleanup for mode_set entries is wrong. Those entries are

allocated with devm_kzalloc(), so they are device-managed resources and

must not be freed with kfree(). Manually freeing them in the error path

can lead to a double free when devres later releases the same memory.

Drop the manual kfree() loop and let devres handle the cleanup.

NVD Source

Technical Analysis

CVE-2026-31475 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 · 3 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/1a82c3272626db9006f4c2cad3adf2916417aed6
PATCHhttps://git.kernel.org/stable/c/d472d1a52985211b92883bb64bbe710b45980190
PATCHhttps://git.kernel.org/stable/c/fe757092d2329c397ecb32f2bf68a5b1c4bd9193

All References (3)

→
https://git.kernel.org/stable/c/1a82c3272626db9006f4c2cad3adf2916417aed6Patch
→
https://git.kernel.org/stable/c/d472d1a52985211b92883bb64bbe710b45980190Patch
→
https://git.kernel.org/stable/c/fe757092d2329c397ecb32f2bf68a5b1c4bd9193Patch

Quick Facts

CVE IDCVE-2026-31475
CVSS Score7.8 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedApr 22, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31475 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.
← All Vulnerabilities·Search for CVE-2026-31475·NVD