CVE-2021-3700
MEDIUM
6.4
CVSS Score
Published: February 24, 2022 at 06:50 PM UTC
Updated: June 17, 2026 at 04:05 AM UTC
4 products affected across 4 vendorsDebian LinuxFedoraEnterprise Linux
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Severity
MEDIUM6.4
Exploit prediction
EPSS 0.3%
Description
A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%95%
v < 0.11.00.11.0
Affected range stops below 0.11.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1992830x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://gitlab.freedesktop.org/spice/usbredir/-/commit/03c519ff5831baMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2022/03/msg00030.htmlCVSS
- Attack Vector
- LOCAL
- Complexity
- HIGH
- Privileges
- HIGH
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
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