CVE-2019-13049: An integer wrap in kernel/sys/syscall.c in ToaruOS 1.10.10 allows users to map arbitrary kernel pages into use

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HIGH 7.8MITIGATE

CVE-2019-13049 is a high-severity flaw (CVSS 7.8) affecting toaruos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An integer wrap in kernel/sys/syscall.c in ToaruOS 1.10.10 allows users to map arbitrary kernel pages into userland process space via TOARU_SYS_FUNC_MMAP, leading to escalation of privileges.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-190
Published	2019-06-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: toaruos project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-06-29 15:15 UTCPublished CVE record published
2026-06-17 02:15 UTCUpdated Record last modified

toaruos project toaruos MITIGATE

Affected: 1.10.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.10.10

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-13049?

toaruos: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-13049 being exploited?

CVE-2019-13049 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-13049 affect?

CVE-2019-13049 affects toaruos. Severity is high (CVSS 7.8). An integer wrap in kernel/sys/syscall.c in ToaruOS 1.10.10 allows users to map arbitrary kernel pages into userland process space via TOARU_SYS_FUNC_MMAP, leading to escalation of privileges.

How urgent is CVE-2019-13049?

Priority 43/100. High severity; Public exploit reference

Related CVEs

CVE-2022-38934 LOW 3.3 MITIGATE readelf in ToaruOS 2.0.1 has some arbitrary address read vulnerabilities when parsing a crafted ELF file.
CVE-2022-38932 HIGH 7.8 MITIGATE readelf in ToaruOS 2.0.1 has a global overflow allowing RCE when parsing a crafted ELF file.
CVE-2021-36710 HIGH 8.8 MITIGATE ToaruOS 1.99.2 is affected by incorrect access control via the kernel
CVE-2019-13048 MEDIUM 5.5 UPGRADE kernel/sys/syscall.c in ToaruOS through 1.10.9 allows a denial of service upon a critical error in certain sys
CVE-2019-13047 HIGH 7.8 UPGRADE kernel/sys/syscall.c in ToaruOS through 1.10.9 has incorrect access control in sys_sysfunc case 9 for TOARU_SY

References

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