CVE-2023-2008: Linux Kernel udmabuf Improper Validation of Array Index Local Privilege Escalation Vulnerability
First published: Fri Apr 14 2023(Updated: )
A flaw was found in the Linux kernel's udmabuf device driver. The specific flaw exists within a fault handler. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an array. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.19 | 5.19 |
| Linux Linux kernel | <5.19 | |
| Linux Linux kernel | >=4.20<5.4.202 | |
| Linux Linux kernel | >=5.5<5.10.127 | |
| Linux Linux kernel | >=5.11<5.15.51 | |
| Linux Linux kernel | >=5.16<5.18.8 | |
| Linux Linux kernel | =5.19 | |
| Linux Linux kernel | =5.19-rc1 | |
| Linux Linux kernel | =5.19-rc2 | |
| Linux Linux kernel | =5.19-rc3 | |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2186862
- https://github.com/torvalds/linux/commit/05b252cccb2e5c3f56119d25de684b4f810ba4
- https://security.netapp.com/advisory/ntap-20230517-0007/
- https://www.zerodayinitiative.com/advisories/ZDI-23-441/
- https://access.redhat.com/errata/RHSA-2022:8267
- https://access.redhat.com/errata/RHSA-2022:7933
- https://access.redhat.com/errata/RHSA-2023:3470
- https://access.redhat.com/errata/RHSA-2023:3465
- https://access.redhat.com/errata/RHSA-2023:3490
- https://access.redhat.com/security/cve/cve-2023-2008
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2023-2008.
What is the severity rating of CVE-2023-2008?
CVE-2023-2008 has a severity rating of 8.2 (high).
What software is affected by CVE-2023-2008?
Linux Kernel versions up to and including 5.19 are affected by CVE-2023-2008.
How can an attacker exploit CVE-2023-2008?
An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit CVE-2023-2008.
Where can I find more information about CVE-2023-2008?
You can find more information about CVE-2023-2008 on the following references: [Reference 1](https://github.com/torvalds/linux/commit/05b252cccb2e5c3f56119d25de684b4f810ba4), [Reference 2](https://www.zerodayinitiative.com/advisories/ZDI-23-441/), [Reference 3](https://access.redhat.com/errata/RHSA-2022:8267).
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