5.5

CVE-2023-4194

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

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version <= 6.4
Linux ≫ Linux Kernel Version6.5 Updaterc1
Linux ≫ Linux Kernel Version6.5 Updaterc2
Linux ≫ Linux Kernel Version6.5 Updaterc3
Linux ≫ Linux Kernel Version6.5 Updaterc4
Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Enterprise Linux Version9.0
Fedoraproject ≫ Fedora Version37
Fedoraproject ≫ Fedora Version38
Debian ≫ Debian Linux Version10.0
Debian ≫ Debian Linux Version11.0
Debian ≫ Debian Linux Version12.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.27% 0.189
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
secalert@redhat.com 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

CWE-863 Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
https://www.debian.org/security/2023/dsa-5480
https://www.debian.org/security/2023/dsa-5492
https://access.redhat.com/errata/RHSA-2023:6583
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-4194
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2229498
Third Party Advisory
Issue Tracking
https://lore.kernel.org/all/20230731164237.48365-1-lersek@redhat.com/
Patch
Vendor Advisory
Mailing List
https://lore.kernel.org/all/20230731164237.48365-2-lersek@redhat.com/
Patch
Vendor Advisory
Mailing List
https://lore.kernel.org/all/20230731164237.48365-3-lersek@redhat.com/
Patch
Vendor Advisory
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/344H6HO6SSC4KT7PDFXSDIXKMKHISSGF/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3TYLSJ2SAI7RF56ZLQ5CQWCJLVJSD73Q/
https://security.netapp.com/advisory/ntap-20231027-0002/