Strix
26.1K

CVE-2025-68783

UnknownEPSS 0.17%

Last modified

CVE-2025-68783 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-mixer: us16x08: validate meter packet indices get_meter_levels_from_urb() parses the 64-byte meter packets sent by the device and fills the per-channel arrays meter_level[], comp_level[] and master_level[] in struct snd_us16x08_meter_store. Currently the function derives the channel index directly from the meter packet (MUB2(meter_urb, s) - 1) and uses it to index those arrays without validating the range. If the packet contains a negative or out-of-range channel number, the driver may write past the end of these arrays. Introduce a local channel variable and validate it before updating the arrays. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-mixer: us16x08: validate meter packet indices get_meter_levels_from_urb() parses the 64-byte meter packets sent by the device and fills the per-channel arrays meter_level[], comp_level[] and master_level[] in struct snd_us16x08_meter_store. Currently the function derives the channel index directly from the meter packet (MUB2(meter_urb, s) - 1) and uses it to index those arrays without validating the range. If the packet contains a negative or out-of-range channel number, the driver may write past the end of these arrays. Introduce a local channel variable and validate it before updating the arrays. We reject negative indices, limit meter_level[] and comp_level[] to SND_US16X08_MAX_CHANNELS, and guard master_level[] updates with ARRAY_SIZE(master_level).

Metrics

EPSS Probability
0.17%

6.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= d2bb390a2081a36ffe906724d2848d846f2aeb29, < 53461710a95e15ac1f6542450943a492ecf8e550; >= d2bb390a2081a36ffe906724d2848d846f2aeb29, < 2168866396bd28ec4f3c8da0fbc7d08b5bd4f053; >= d2bb390a2081a36ffe906724d2848d846f2aeb29, < cde47f4ccad6751ac36b7471572ddf38ee91870c; >= d2bb390a2081a36ffe906724d2848d846f2aeb29, < 2f21a7cbaaa93926f5be15bc095b9c57c35748d9; >= d2bb390a2081a36ffe906724d2848d846f2aeb29, < a8ad320efb663be30b794e3dd3e829301c0d0ed3; >= d2bb390a2081a36ffe906724d2848d846f2aeb29, < eaa95228b8a56c4880a182c0350d67922b22408f; >= d2bb390a2081a36ffe906724d2848d846f2aeb29, < 5526c1c6ba1d0913c7dfcbbd6fe1744ea7c55f1e
LinuxLinux4.11

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-68783?
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-mixer: us16x08: validate meter packet indices get_meter_levels_from_urb() parses the 64-byte meter packets sent by the device and fills the per-channel arrays meter_level[], comp_level[] and master_level[] in struct snd_us16x08_meter_store. Currently the function derives the channel index directly from the meter packet (MUB2(meter_urb, s) - 1) and uses it to index those arrays without validating the range. If the packet contains a negative or out-of-range channel number, the driver may write past the end of these arrays. Introduce a local channel variable and validate it before updating the arrays. We reject negative indices, limit meter_level[] and comp_level[] to SND_US16X08_MAX_CHANNELS, and guard master_level[] updates with ARRAY_SIZE(master_level).
How severe is CVE-2025-68783?
Severity scoring for CVE-2025-68783 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2025-68783?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2025

View all 2025CVEs →

Are you affected by CVE-2025-68783?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST