CVE-2023-3269: Distros-[dirtyvma] privilege escalation via non-rcu-protected vma traversal
First published: Thu Jun 15 2023(Updated: )
A vulnerability exists in the memory management subsystem of the Linux kernel. The lock handling for accessing and updating virtual memory areas (VMAs) is incorrect, leading to use-after-free problems. This issue can be successfully exploited to execute arbitrary kernel code, escalate containers, and gain root privileges.
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 | |
| Linux Kernel | >=6.1<6.1.37 | |
| Linux Kernel | >=6.2<6.3.11 | |
| Linux Kernel | =6.4 | |
| Linux Kernel | =6.4-rc1 | |
| Linux Kernel | =6.4-rc2 | |
| Linux Kernel | =6.4-rc3 | |
| Linux Kernel | =6.4-rc4 | |
| Linux Kernel | =6.4-rc5 | |
| Linux Kernel | =6.4-rc6 | |
| Linux Kernel | =6.4-rc7 | |
| Fedora | =37 | |
| Fedora | =38 | |
| Red Hat Enterprise Linux | =6.0 | |
| Red Hat Enterprise Linux | =7.0 | |
| Red Hat Enterprise Linux | =8.0 | |
| Red Hat Enterprise Linux | =9.0 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2023-3269
- https://bugzilla.redhat.com/show_bug.cgi?id=2215268
- https://www.openwall.com/lists/oss-security/2023/07/05/1
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U6AAA64CUPSMBW6XDTXPQJ3KQWYQ4K7L/
- http://seclists.org/fulldisclosure/2023/Jul/43
- http://www.openwall.com/lists/oss-security/2023/07/28/1
- http://www.openwall.com/lists/oss-security/2023/08/25/1
- http://www.openwall.com/lists/oss-security/2023/08/25/4
- https://security.netapp.com/advisory/ntap-20230908-0001/
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9471f1f2f50282b9e8f59198ec6bb738b4ccc009
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2219916
- https://access.redhat.com/security/cve/cve-2023-3269
- https://launchpad.net/bugs/cve/CVE-2023-3269
- https://github.com/lrh2000/StackRot
- https://www.openwall.com/lists/oss-security/2023/07/28/1
- https://security-tracker.debian.org/tracker/CVE-2023-3269
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3269
- https://nvd.nist.gov/vuln/detail/CVE-2023-3269
- https://ubuntu.com/security/CVE-2023-3269
Frequently Asked Questions
What is the severity of CVE-2023-3269?
CVE-2023-3269 has a high severity rating due to its potential for exploitation leading to arbitrary code execution.
How do I fix CVE-2023-3269?
To remediate CVE-2023-3269, update the Linux kernel to a version that includes the patches for this vulnerability.
Which versions of Linux kernel are affected by CVE-2023-3269?
CVE-2023-3269 affects Linux kernel versions from 6.1.0 up to 6.1.37, 6.2.0 up to 6.3.11, and 6.4 release candidates.
What can happen if CVE-2023-3269 is exploited?
Exploitation of CVE-2023-3269 can lead to serious consequences such as arbitrary code execution and privilege escalation.
Is CVE-2023-3269 specific to certain Linux distributions?
Yes, CVE-2023-3269 impacts various Linux distributions, including Fedora and Red Hat Enterprise Linux across specific versions.
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