5.5

CVE-2022-49772: ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()

Modified
AliasesUBUNTU-CVE-2022-49772DEBIAN-CVE-2022-49772
Published 01-05-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-49772 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.6% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.20%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 7
SUSE-SU-2025:01918-1SUSE-SU-2025:01966-1SUSE-SU-2025:01982-1SUSE-SU-2025:01983-1SUSE-SU-2025:01995-1SUSE-SU-2025:02173-1

Timeline

  1. 01-05-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open() snd_usbmidi_output_open() has a check of the NULL port with snd_BUG_ON(). snd_BUG_ON() was used as this shouldn't have happened, but in reality, the NULL port may be seen when the device gives an invalid endpoint setup at the descriptor, hence the driver skips the allocation. That is, the check itself is valid and snd_BUG_ON() should be dropped from there. Otherwise it's confusing as if it were a real bug, as recently syzbot stumbled on it.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.19% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu114 products
  • linuxAll versions (No fix recorded) | < 4.15.0-206.217 | < 5.4.0-144.161 | < 5.15.0-67.74
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1151.164 | < 5.4.0-1097.105 | < 5.15.0-1031.35
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 738d9edcfd44f154924692e54109fb439fcf8bdd, < c43991065f36f7628cd124e037b8750c4617a7a7 | ≥ 738d9edcfd44f154924692e54109fb439fcf8bdd, < e7dc436aea80308a9268e6d2d85f910ff107de9b | ≥ 738d9edcfd44f154924692e54109fb439fcf8bdd, < a80369c8ca50bc885d14386087a834659ec54a54 | ≥ 738d9edcfd44f154924692e54109fb439fcf8bdd, < 02b94885b2fdf1808b1874e009bfb90753f8f4db | ≥ 738d9edcfd44f154924692e54109fb439fcf8bdd, < 00f5f1bbf815a39e9eecb468d12ca55d3360eb10 | ≥ 738d9edcfd44f154924692e54109fb439fcf8bdd, < ad72c3c3f6eb81d2cb189ec71e888316adada5df | 4.15
  • linux_kernel< 4.9.334 | ≥ 4.10, < 4.14.300 | ≥ 4.15, < 4.19.267 | ≥ 4.20, < 5.4.225 | ≥ 5.5, < 5.10.156 | ≥ 5.11, < 5.15.80 | ≥ 5.16, < 6.0.10 | 6.1:rc1 | 6.1:rc2 | 6.1:rc3 | 6.1:rc4 | 6.1:rc5
Debian1 product
  • linux< 6.0.10-1

3 vendors · 117 products

References

12 links
Show all 12 references