CVE-2023-3161
First published: Thu Jun 08 2023(Updated: )
A flaw was found in the Framebuffer Console (fbcon) in the Linux Kernel. When providing font->width and font->height greater than 32 to fbcon_set_font, since there are no checks in place, a shift-out-of-bounds occurs leading to undefined behavior and possible denial of service. Upstream fix: <a href="https://github.com/torvalds/linux/commit/2b09d5d364986f724f17001ccfe4126b9b43a0be">https://github.com/torvalds/linux/commit/2b09d5d364986f724f17001ccfe4126b9b43a0be</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.2 | 6.2 |
| Linux Kernel | <6.2 | |
| Linux Kernel | =6.2-rc1 | |
| Linux Kernel | =6.2-rc2 | |
| Linux Kernel | =6.2-rc3 | |
| Linux Kernel | =6.2-rc4 | |
| Linux Kernel | =6.2-rc5 | |
| Linux Kernel | =6.2-rc6 | |
| Red Hat Fedora | =38 | |
| Red Hat Enterprise Linux | =8.0 | |
| Red Hat Enterprise Linux | =9.0 | |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.21-1 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2213485
- https://github.com/torvalds/linux/commit/2b09d5d364986f724f17001ccfe4126b9b43a0be
- https://launchpad.net/bugs/cve/CVE-2023-3161
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2213490
- https://access.redhat.com/errata/RHSA-2023:5603
- https://access.redhat.com/errata/RHSA-2023:5604
- https://access.redhat.com/errata/RHSA-2023:6583
- https://access.redhat.com/errata/RHSA-2023:6901
- https://access.redhat.com/errata/RHSA-2023:7077
- https://access.redhat.com/errata/RHSA-2024:0412
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3161
- https://nvd.nist.gov/vuln/detail/CVE-2023-3161
- https://security-tracker.debian.org/tracker/CVE-2023-3161
- https://ubuntu.com/security/CVE-2023-3161
- https://git.kernel.org/linus/2b09d5d364986f724f17001ccfe4126b9b43a0be
- https://www.ibm.com/support/pages/node/7172423 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2023-3161?
CVE-2023-3161 is considered to have a high severity due to the potential for denial of service and undefined behavior in the Linux Kernel.
How do I fix CVE-2023-3161?
To fix CVE-2023-3161, update to a kernel version that is 6.2 or higher or apply the relevant patches provided by your distribution.
What software is affected by CVE-2023-3161?
CVE-2023-3161 affects various versions of the Linux Kernel up to exclusive version 6.2 and also specific IBM Security Verify Governance components.
What is the impact of CVE-2023-3161?
The impact of CVE-2023-3161 includes the possibility of denial of service due to a shift-out-of-bounds condition in the Framebuffer Console.
When was CVE-2023-3161 discovered?
CVE-2023-3161 was disclosed in the year 2023, following the findings related to the Framebuffer Console in the Linux Kernel.
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