VulnerabilityPublished 22 Aug 2025Updated 5 Nov 2026

CVE-2025-38629: Linux kernel · ALSA: usb: scarlett2: Fix missing NULL check

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in df485a4b2b3ee5b35c80f990beb554e38a8a5fb1 : update Linux kernel when convenient.

Data as of 5 Nov 2026, 23:23 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 5% 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 df485a4b2b3ee5b35c80f990beb554e38a8a5fb1, d558db85920b124bac36f8a7ddc5de0aa7491bdd, 2c735fcaee81ad8056960659dc9dc460891e76b0

Exploitation evidence

Disclosed: evidence found.
CVE published 22 Aug 2025
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 Linux kernel to df485a4b2b3ee5b35c80f990beb554e38a8a5fb1, d558db85920b124bac36f8a7ddc5de0aa7491bdd or 2c735fcaee81ad8056960659dc9dc460891e76b0.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 8eba063b5b2b498ddd01ea6f29fc9b12368c3d53, < df485a4b2b3ee5b35c80f990beb554e38a8a5fb1	Fixed in df485a4b2b3ee5b35c80f990beb554e38a8a5fb1
LinuxLinux	Affected ≥ 8eba063b5b2b498ddd01ea6f29fc9b12368c3d53, < d558db85920b124bac36f8a7ddc5de0aa7491bdd	Fixed in d558db85920b124bac36f8a7ddc5de0aa7491bdd
LinuxLinux	Affected ≥ 8eba063b5b2b498ddd01ea6f29fc9b12368c3d53, < 2c735fcaee81ad8056960659dc9dc460891e76b0	Fixed in 2c735fcaee81ad8056960659dc9dc460891e76b0
LinuxLinux	Affected =6.13	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb: scarlett2: Fix missing NULL check scarlett2_input_select_ctl_info() sets up the string arrays allocated via kasprintf(), but it misses NULL checks, which may lead to NULL dereference Oops. Let's add the proper NULL check.

References

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