PT-2023-2760 · Linux+5 · Linux Kernel+5
Syzbot
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Published
2023-01-30
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Updated
2024-04-15
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CVE-2023-32269
CVSS v3.1
6.7
Medium
| Vector | AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.1.11
Description
The issue is related to the implementation of the NET/ROM network protocol in the Linux kernel. It involves a use-after-free error in the
af netrom.c module, specifically in the nr release() function, due to the reuse of a network descriptor (socket) for an already established connection. For an attacker to exploit this, the system must have netrom routing configured or the attacker must possess the CAP NET ADMIN capability. This could potentially impact the confidentiality, integrity, and availability of data.Recommendations
For Linux kernel versions prior to 6.1.11, update to version 6.1.11 or later to resolve the issue.
As a temporary workaround, consider disabling netrom routing or restricting the
CAP NET ADMIN capability to minimize the risk of exploitation.Fix
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Linuxmint
Linux Kernel
Suse
Ubuntu