VulnerabilityPublished 4 Feb 2026Updated 5 Nov 2026

CVE-2026-23078: Linux kernel · ALSA: scarlett2: Fix buffer overflow in config retrieval

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in d5e80d1f97ae55bcea1426f551e4419245b41b9c : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:49 UTC

Severity

Unrated

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

Thin evidence

One scorer or none

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 d5e80d1f97ae55bcea1426f551e4419245b41b9c, 51049f6e3f05d70660e2458ad3bb302a3721b751, 27049f50be9f5ae3a62d272128ce0b381cb26a24 +3

Exploitation evidence

Disclosed: evidence found.
CVE published 4 Feb 2026
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 to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ ac34df733d2dfe3b553897a1e9e1a44414f09834, < d5e80d1f97ae55bcea1426f551e4419245b41b9c	Fixed in d5e80d1f97ae55bcea1426f551e4419245b41b9c
LinuxLinux	Affected ≥ ac34df733d2dfe3b553897a1e9e1a44414f09834, < 51049f6e3f05d70660e2458ad3bb302a3721b751	Fixed in 51049f6e3f05d70660e2458ad3bb302a3721b751
LinuxLinux	Affected ≥ ac34df733d2dfe3b553897a1e9e1a44414f09834, < 27049f50be9f5ae3a62d272128ce0b381cb26a24	Fixed in 27049f50be9f5ae3a62d272128ce0b381cb26a24
LinuxLinux	Affected ≥ ac34df733d2dfe3b553897a1e9e1a44414f09834, < 91a756d22f0482eac5bedb113c8922f90b254449	Fixed in 91a756d22f0482eac5bedb113c8922f90b254449
LinuxLinux	Affected ≥ ac34df733d2dfe3b553897a1e9e1a44414f09834, < 31a3eba5c265a763260976674a22851e83128f6d	Fixed in 31a3eba5c265a763260976674a22851e83128f6d
LinuxLinux	Affected ≥ ac34df733d2dfe3b553897a1e9e1a44414f09834, < 6f5c69f72e50d51be3a8c028ae7eda42c82902cb	Fixed in 6f5c69f72e50d51be3a8c028ae7eda42c82902cb

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: scarlett2: Fix buffer overflow in config retrieval The scarlett2_usb_get_config() function has a logic error in the endianness conversion code that can cause buffer overflows when count > 1. The code checks `if (size == 2)` where `size` is the total buffer size in bytes, then loops `count` times treating each element as u16 (2 bytes). This causes the loop to access `count * 2` bytes when the buffer only has `size` bytes allocated. Fix by checking the element size (config_item->size) instead of the total buffer size. This ensures the endianness conversion matches the actual element type.

References

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