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CVE-2023-6200

Kernel: icmpv6 router advertisement packets, aka linux tcp/ip remote code execution vulnerability

HIGH
7.5
CVSS Score
Published: January 28, 2024 at 12:19 PM UTC
Updated: June 17, 2026 at 06:50 AM UTC
3 products affected across 3 vendorsLinux KernelFedoraKernel

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Severity
HIGH7.5
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

A race condition was found in the Linux Kernel. Under certain conditions, an unauthenticated attacker from an adjacent network could send an ICMPv6 router advertisement packet, causing arbitrary code execution.

Affected

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

Linux Kernel· Linux
95%
v < 6.76.7 rc16.7 rc26.7 rc36.7 rc46.7 rc56.7 rc6
Affected range stops below 6.7, so it looks safe — our inference, not a vendor statement
Fedora· Fedora Projectrpm
60%
All versions
Kernel· Red Hat
60%
All versions
Vendor states this is fixed in 6.7-rc7 (unaffected)

Remediation

No guide yet

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

Patch and advisory references

References (3)

VDB Entryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/security/cve/CVE-2023-6200
Issue Trackingx_refsource_REDHATPatch
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2250377
Mailing ListPatch
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dade3f6a1e4e

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

7.5HIGHredhat
Attack Vector
ADJACENT_NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-362

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