What is CVE-2019-13233?

CVE-2019-13233 is a high-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.0/10. Published 2019-07-04.

How severe is CVE-2019-13233?

High severity. CVSS v3 base score is 7.0 out of 10.

Is CVE-2019-13233 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Linux Kernel

CVE-2019-13233

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.

Vulnerability class: Race Condition

Published 2019-07-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (39.8th percentile), scored 2026-10-06.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Linux Kernel

Weakness classification (CWE)

Public proof-of-concept exploits

Sec20-Paper310/Paper310

References

bugs.chromium.org/p/project-zero/issues/detail (Exploit, Patch, Mailing List, Third Party Advisory)
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.9 (Mailing List, Release Notes, Vendor Advisory)
github.com/torvalds/linux/commit/de9f869616dd95e95c00bdd6b0fcd3421e8a4323 (Patch, Third Party Advisory)
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Mailing List, Vendor Advisory)
lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html (vendor-advisory)
security.netapp.com/advisory/ntap-20190806-0001/
www.debian.org/security/2019/dsa-4495 (vendor-advisory)
seclists.org/bugtraq/2019/Aug/13 (mailing-list)
usn.ubuntu.com/4093-1/ (vendor-advisory)
usn.ubuntu.com/4094-1/ (vendor-advisory)

Frequently asked questions

What is CVE-2019-13233?: CVE-2019-13233 is a high-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.0/10. Published 2019-07-04.
How severe is CVE-2019-13233?: High severity. CVSS v3 base score is 7.0 out of 10.
Is CVE-2019-13233 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.