CVE-2019-13233: Use After Free
First published: Thu Jul 04 2019(Updated: )
A vulnerability was found in arch/x86/lib/insn-eval.c in the Linux kernel, there is a use-after-free for access to an LDT entry because of a race condition between modify_ldt() and a #BR exception for an MPX bounds violation. Reference: <a href="https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.9">https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.9</a> <a href="https://bugs.chromium.org/p/project-zero/issues/detail?id=1879">https://bugs.chromium.org/p/project-zero/issues/detail?id=1879</a> Upstream commit: <a href="https://github.com/torvalds/linux/commit/de9f869616dd95e95c00bdd6b0fcd3421e8a4323">https://github.com/torvalds/linux/commit/de9f869616dd95e95c00bdd6b0fcd3421e8a4323</a> <a href="https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de9f869616dd95e95c00bdd6b0fcd3421e8a4323">https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de9f869616dd95e95c00bdd6b0fcd3421e8a4323</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:3.10.0-1127.rt56.1093.el7 | 0:3.10.0-1127.rt56.1093.el7 |
| redhat/kernel | <0:3.10.0-1127.el7 | 0:3.10.0-1127.el7 |
| redhat/kernel | <0:3.10.0-957.56.1.el7 | 0:3.10.0-957.56.1.el7 |
| redhat/kernel | <0:3.10.0-1062.26.1.el7 | 0:3.10.0-1062.26.1.el7 |
| redhat/kernel-rt | <0:4.18.0-147.rt24.93.el8 | 0:4.18.0-147.rt24.93.el8 |
| redhat/kernel | <0:4.18.0-147.el8 | 0:4.18.0-147.el8 |
| IBM Data Risk Manager | <=2.0.6 | |
| Linux Kernel | <5.1.9 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.21-1 6.12.22-1 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2019-13233 https://nvd.nist.gov/vuln/detail/CVE-2019-13233
- https://bugzilla.redhat.com/show_bug.cgi?id=1727756
- https://access.redhat.com/errata/RHSA-2020:1070
- https://access.redhat.com/errata/RHSA-2020:1016
- https://access.redhat.com/errata/RHSA-2020:2851
- https://access.redhat.com/errata/RHSA-2020:2522
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://access.redhat.com/security/cve/cve-2019-13233
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html
- http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1879
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.9
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de9f869616dd95e95c00bdd6b0fcd3421e8a4323
- https://github.com/torvalds/linux/commit/de9f869616dd95e95c00bdd6b0fcd3421e8a4323
- https://seclists.org/bugtraq/2019/Aug/13
- https://security.netapp.com/advisory/ntap-20190806-0001/
- https://support.f5.com/csp/article/K13331647?utm_source=f5support&utm_medium=RSS
- https://usn.ubuntu.com/4093-1/
- https://usn.ubuntu.com/4094-1/
- https://usn.ubuntu.com/4117-1/
- https://usn.ubuntu.com/4118-1/
- https://www.debian.org/security/2019/dsa-4495
- https://support.f5.com/csp/article/K13331647?utm_source=f5support&amp;utm_medium=RSS
- https://launchpad.net/bugs/cve/CVE-2019-13233
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1727757
- https://support.f5.com/csp/article/K13331647?utm_source=f5support&%3Butm_medium=RSS
- https://exchange.xforce.ibmcloud.com/vulnerabilities/162780
- https://www.ibm.com/support/pages/node/6335281 (Advisory)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13233
- https://nvd.nist.gov/vuln/detail/CVE-2019-13233
- https://security-tracker.debian.org/tracker/CVE-2019-13233
- https://ubuntu.com/security/CVE-2019-13233
- https://git.kernel.org/linus/de9f869616dd95e95c00bdd6b0fcd3421e8a4323
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2019-13233?
CVE-2019-13233 has a severity rating of medium due to its potential for causing a use-after-free condition.
How do I fix CVE-2019-13233?
To fix CVE-2019-13233, update to the recommended kernel versions provided by your distribution, such as kernel-rt and kernel packages from Red Hat.
Which versions of the Linux kernel are affected by CVE-2019-13233?
CVE-2019-13233 affects Linux kernel versions prior to 5.1.9.
Is CVE-2019-13233 specific to Red Hat or does it affect other distributions?
While CVE-2019-13233 is prominently noted in Red Hat environments, other Linux distributions that use affected kernel versions could also be vulnerable.
What type of vulnerability is CVE-2019-13233?
CVE-2019-13233 is a use-after-free vulnerability caused by a race condition in the Linux kernel.
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