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CVE-2023-4194 Details

Description

A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ("tun: tun_chr_open(): correctly initialize socket uid"), - 66b2c338adce ("tap: tap_open(): correctly initialize socket uid"), pass "inode->i_uid" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.

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References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2023:6583 CVEThird Party Advisory
https://access.redhat.com/security/cve/CVE-2023-4194 CVEThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2229498 CVEIssue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html CVE
https://lists.fedoraproject.org/archives/list/[email protected]/message/344H6HO6SSC4KT7PDFXSDIXKMKHISSGF/ CVE

see all 18 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-843Access of Resource Using Incompatible Type ('Type Confusion')[email protected]
CWE-843Access of Resource Using Incompatible Type ('Type Confusion')[email protected]
CWE-863Incorrect Authorization[email protected]

Affected Products

ProductVersions
linux linux kernel
<= 6.4
6.5 rc1
6.5 rc2
6.5 rc3
6.5 rc4

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.5:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.5:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.5:rc4:*:*:*:*:*:*

Remediation

  • No remediation found in references.
redhat enterprise linux
8.0
9.0

CPE

  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
fedoraproject fedora
37
38

CPE

  • cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
debian debian linux
10.0
11.0
12.0

CPE

  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

19 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2023-4194
NVD Published Date:
Aug 7, 2023
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2023-4194 Details - Not Deferred