CVE-2021-47096

ALSA: rawmidi - fix the uninitalized user_pversion

MEDIUM
4
CVSS Score
Published: March 4, 2024 at 06:10 PM UTC
Updated: June 17, 2026 at 04:16 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: rawmidi - fix the uninitalized user_pversion The user_pversion was uninitialized for the user space file structure in the open function, because the file private structure use kmalloc for the allocation. The kernel ALSA sequencer code clears the file structure, so no additional fixes are required. BugLink: https://github.com/alsa-project/alsa-lib/issues/178

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≥ 5.14.105.14.10 ≤ v < 5.155.15 ≤ v < 5.15.125.15 ≤ v < 5.1612d50801497235956fb3760be8530f4e44e4ce675.14.105.16 rc15.16 rc25.16 rc35.16 rc45.16 rc55.16 rc69d23174402da0f10e98da2c61bb5ac8e7d79fdd
Vendor states this is fixed in 39a8fc4971a00d22536aeb7d446ee4a97810611b (fixed)
Vendor states this is fixed in b398fcbe4de1e1100867fdb6f447c6fbc8fe7085 (fixed)
Vendor states this is fixed in 5.15 (unaffected)
Vendor states this is fixed in 5.15.12 (unaffected)
Vendor states this is fixed in 5.16 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/39a8fc4971a00d22536aeb7d446ee4a97810611b
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b398fcbe4de1e1100867fdb6f447c6fbc8fe7085

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-908

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