CVE-2021-47070

uio_hv_generic: Fix another memory leak in error handling paths

MEDIUM
5.5
CVSS Score
Published: March 1, 2024 at 09:15 PM UTC
Updated: June 17, 2026 at 04:16 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: uio_hv_generic: Fix another memory leak in error handling paths Memory allocated by 'vmbus_alloc_ring()' at the beginning of the probe function is never freed in the error handling path. Add the missing 'vmbus_free_ring()' call. Note that it is already freed in the .remove function.

Affected

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

4.20 ≤ v < 5.10.2414.20 ≤ v < 5.12.74.20 ≤ v < 5.135.13 rc15.13 rc2cdfa835c6e5e87d145f9f632b58843de97509f2b
Vendor states this is fixed in 0b0226be3a52dadd965644bc52a807961c2c26df (fixed)
Vendor states this is fixed in 261bbd90cc53d2835343f056770156cf1e82cf03 (fixed)
Vendor states this is fixed in 5f59240cf25b2f7a0fdffc2701482a70310fec07 (fixed)
Vendor states this is fixed in 4.20 (unaffected)
Vendor states this is fixed in 5.10.241 (unaffected)
Vendor states this is fixed in 5.12.7 (unaffected)
Vendor states this is fixed in 5.13 (unaffected)

Remediation

No guide yet

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

References (4)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

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