Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Use correct version for UAC3 header validation The entry of the validators table for UAC3 AC header descriptor is defined with the wrong protocol version UAC_VERSION_2, while it should have been UAC_VERSION_3. This results in the validator never matching for actual UAC3 devices (protocol == UAC_VERSION_3), causing their header descriptors to bypass validation entirely. A malicious USB device presenting a truncated UAC3 header could exploit this to cause out-of-bounds reads when the driver later accesses unvalidated descriptor fields. The bug was introduced in the same commit as the recently fixed UAC3 feature unit sub-type typo, and appears to be from the same copy-paste error when the UAC3 section was created from the UAC2 section.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
2 versions affected across 1 product
| Date | Total | Labels |
|---|
| 2026-03-25 | 1 | Patch1 |
| 2026-03-26 | 1 | Disclosure1 |
| 2026-03-28 | 1 | General1 |
⚡ New CVE Alert: CVE-2026-23318 🚨 Risk Level: Unknown 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-23318 #CVE-2026-23318 #CVE #CyberSecurity #InfoSec https://t.co/5S6b5VLjUQ
Post summary
The tweet simply announces CVE‑2026‑23318 with minimal details and no indication of PoC, exploitation, patch, or technical specifics.
🚨 Another day, another “whoops” in kernel validation: a UAC3 header slips past because the version check targets the wrong protocol. Congrats, attackers love typos. #WindowsForum #Security #Kernel https://windowsforum.com/threads/cve-2026-23318-uac3-usb-audio-validator-typo-risks-kernel-out-of-bounds-reads.407413/ #LinuxKernel #UsbAudio #CveSecurity #AlsaSndUsbAudio https://t.co/RN3hzwKf13
Post summary
The tweet announces a kernel validation flaw (CVE‑2026‑23318) that allows out‑of‑bounds reads via a mis‑validated UAC3 header, but no PoC, exploit, or patch is provided.
CVE-2026-23318 In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Use correct version for UAC3 header validation The entry of the validators tabl… https://www.cve.org/CVERecord?id=CVE-2026-23318
Post summary
CVE-2026-23318 – a Linux kernel ALSA issue involving UAC3 header validation – has been resolved, with no PoC, exploit, or active exploitation reported.
9 of 9 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | linux | linux_kernel | - | - | - |
| OS | linux | linux_kernel | 5.4 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |
| OS | linux | linux_kernel | 7.0 | - | - |