CVE-2023-2248 Detail
This vulnerability is currently awaiting analysis.
Description
A heap out-of-bounds read/write vulnerability in the Linux Kernel traffic control (QoS) subsystem can be exploited to achieve local privilege escalation. The qfq_change_class function does not properly limit the lmax variable which can lead to out-of-bounds read/write. If the TCA_QFQ_LMAX value is not offered through nlattr, lmax is determined by the MTU value of the network device. The MTU of the loopback device can be set up to 2^31-1 and as a result, it is possible to have an lmax value that exceeds QFQ_MIN_LMAX. We recommend upgrading past commit 3037933448f60f9acb705997eae62013ecb81e0d.
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | Google Inc. |
Change History
0 change records found show changes
Quick Info
CVE Dictionary Entry:
CVE-2023-2248
NVD Published Date:
05/01/2023
NVD Last Modified:
05/01/2023
Source:
Google Inc.