CVE-2023-3090

Out-of-bounds write in Linux kernel's ipvlan network driver

HIGH
7.8
CVSS Score
Published: June 28, 2023 at 07:06 PM UTC
Updated: June 17, 2026 at 06:13 AM UTC
2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity
HIGH7.8
Exploit prediction
EPSS 0.5%
SSVC
PoC

Description

A heap out-of-bounds write vulnerability in the Linux Kernel ipvlan network driver can be exploited to achieve local privilege escalation. The out-of-bounds write is caused by missing skb->cb initialization in the ipvlan network driver. The vulnerability is reachable if CONFIG_IPVLAN is enabled. We recommend upgrading past commit 90cbed5247439a966b645b34eb0a2e037836ea8e.

Affected

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

3.19 ≤ v < 4.14.3163.19 ≤ v < 6.44.15 ≤ v < 4.19.2844.20 ≤ v < 5.4.2445.11 ≤ v < 5.15.1135.16 ≤ v < 6.1.305.5 ≤ v < 5.10.1816.2 ≤ v < 6.3.43.19
Affected range stops below 4.14.316, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.284, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.10.181, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.15.113, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.244, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.30, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.3.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.4, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

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

CVSS

7.8HIGHGoogle
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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