01 Record

CVE-2023-4194

Kernel: tap: tap_open(): correctly initialize socket uid next fix of i_uid to current_fsuid

MediumPUBLISHEDCNA: redhat

CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

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02 Description

Kernel: tap: tap_open(): correctly initialize socket uid next fix of i_uid to current_fsuid

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.26% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 18.6% of scored records. A rank, not a probability.
NVD base score: 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2023-08-07 13:19Z3 YR AGO

Last updated

2026-03-24 11:22Z7 MO AGO

Reserved

2023-08-06

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Weaknesses

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')Base
CWE-863Incorrect AuthorizationClass

Data version

5.2

Document digest

f6aac73afb7a73858f3078f8f90bcae83003cee68dc1399ffb6ed5549c156285

05 Affected products

VendorProductVersionsPlatforms

Red HatRed Hat Enterprise Linux 9Not specified—

Red HatRed Hat Enterprise Linux 6Not specified—

Red HatRed Hat Enterprise Linux 7Not specified—

Red HatRed Hat Enterprise Linux 8Not specified—

Red HatRed Hat Virtualization 4Not specified—

06 References

access.redhat.comRHSA-2023:6583https://access.redhat.com/errata/RHSA-2023:6583vendor-advisoryx_refsource_REDHAT
access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-4194vdb-entryx_refsource_REDHAT
bugzilla.redhat.comRHBZ#2229498https://bugzilla.redhat.com/show_bug.cgi?id=2229498issue-trackingx_refsource_REDHAT
lore.kernel.orghttps://lore.kernel.org/all/20230731164237.48365-1-lersek@redhat.com/
lore.kernel.orghttps://lore.kernel.org/all/20230731164237.48365-2-lersek@redhat.com/
lore.kernel.orghttps://lore.kernel.org/all/20230731164237.48365-3-lersek@redhat.com/
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/344H6HO6SSC4KT7PDFXSDIXKMKHISSGF/
lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3TYLSJ2SAI7RF56ZLQ5CQWCJLVJSD73Q/
security.netapp.comhttps://security.netapp.com/advisory/ntap-20231027-0002/
www.debian.orghttps://www.debian.org/security/2023/dsa-5480
www.debian.orghttps://www.debian.org/security/2023/dsa-5492

07 Fixed in

Debian 12

linux
Fixed in 6.1.52-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.4.11-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.4.11-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.