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CVE-2023-28327

MEDIUM
5.5
CVSS Score
Published: April 19, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:47 AM UTC
3 products affected across 2 vendorsLinux KernelEnterprise LinuxKernel

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

Description

A NULL pointer dereference flaw was found in the UNIX protocol in net/unix/diag.c In unix_diag_get_exact in the Linux Kernel. The newly allocated skb does not have sk, leading to a NULL pointer. This flaw allows a local user to crash or potentially cause a denial of service.

Affected

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

Linux Kernel· Linux
95%
v < 6.0
Affected range stops below 6.0, so it looks safe — our inference, not a vendor statement
Enterprise Linux· Red Hatrpm
95%
8.09.0
Kernel· Red Hat
60%
All versions

Remediation

No guide yet

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

Patch and advisory references

References (1)

Issue TrackingPatch
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2177382

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
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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