CVE-2019-13233

Public Exploit

Description

In arch/x86/lib/insn-eval.c in the Linux kernel before 5.1.9, 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.

Category

7.0
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.07%
Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugs.chromium.org/p/project-zero/issues/detail?id=1879 mailing list patch exploit third party advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.9 mailing list release notes vendor advisory
https://github.com/torvalds/linux/commit/de9f869616dd95e95c00bdd6b0fcd3421e8a4323 third party advisory patch
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de9f869616dd95e95c00bdd6b0fcd3421e8a4323 mailing list patch vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html vendor advisory
https://security.netapp.com/advisory/ntap-20190806-0001/
https://www.debian.org/security/2019/dsa-4495 vendor advisory
https://seclists.org/bugtraq/2019/Aug/13 mailing list
https://usn.ubuntu.com/4093-1/ vendor advisory
https://usn.ubuntu.com/4094-1/ vendor advisory
https://usn.ubuntu.com/4117-1/ vendor advisory
https://usn.ubuntu.com/4118-1/ vendor advisory
http://packetstormsecurity.com/files/154408/Kernel-Live-Patch-Security-Notice-LSN-0055-1.html
https://support.f5.com/csp/article/K13331647?utm_source=f5support&%3Butm_medium=RSS
https://access.redhat.com/errata/RHSA-2019:3309 vendor advisory
https://access.redhat.com/errata/RHSA-2019:3517 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-13233?
CVE-2019-13233 has been scored as a high severity vulnerability.
How to fix CVE-2019-13233?
To fix CVE-2019-13233, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-13233 being actively exploited in the wild?
It is possible that CVE-2019-13233 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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