CVE-2022-39377: sysstat is a set of system performance tools for the Linux operating system

This month

HIGH 7.0WATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2022-39377 is a high-severity flaw (CVSS 7.0) affecting sysstat, debian linux, fedora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

sysstat is a set of system performance tools for the Linux operating system. On 32 bit systems, in versions 9.1.16 and newer but prior to 12.7.1, allocate_structures contains a size_t overflow in sa_common.c. The allocate_structures function insufficiently checks bounds before arithmetic multiplication, allowing for an overflow in the size allocated for the buffer representing system activities. This issue may lead to Remote Code Execution (RCE).

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.0 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-120, CWE-131
Published	2022-11-08
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: debian · fedoraproject · sysstat project

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

Am I affected?

Timeline

2022-11-08 20:15 UTCPublished CVE record published
2026-06-17 04:58 UTCUpdated Record last modified

sysstat project sysstat UPGRADE

Affected: >= 9.1.6 and < 12.6.1

Fixed in: 12.6.1

Safe to downgrade to: a release before 9.1.6

1. Check installed version

apt-cache policy sysstat || rpm -q sysstat || sysstat --version

2. UPGRADE to 12.6.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sysstat

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sysstat

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 9.1.6 (Debian / Ubuntu)

apt-cache madison sysstat sudo apt install sysstat=<VERSION_BEFORE_9.1.6> sudo apt-mark hold sysstat

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list sysstat sudo dnf downgrade sysstat-<VERSION_BEFORE_9.1.6> sudo dnf versionlock add sysstat

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

debian debian linux MITIGATE

Affected: 10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.0

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.

fedoraproject fedora MITIGATE

Affected: 35 · 36 · 37

Fixed in: no fixed release known

Safe to downgrade to: a release before 35

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-2022-39377?

sysstat: upgrade to 12.6.1; debian linux: mitigate or apply the listed mitigation; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-39377 being exploited?

CVE-2022-39377 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-2022-39377 affect?

CVE-2022-39377 affects sysstat, debian linux, fedora. Severity is high (CVSS 7.0). sysstat is a set of system performance tools for the Linux operating system. On 32 bit systems, in versions 9.1.16 and newer but prior to 12.7.1, allocate_structures contains a size_t overflow in sa_common.c. The allocate_structures functio

How urgent is CVE-2022-39377?

Priority 52/100. High severity; Public exploit reference; On your watchlist

Software pages

Debian vulnerabilities

Related CVEs

CVE-2023-33204 HIGH 7.8 UPGRADE MITIGATE sysstat through 12.7.2 allows a multiplication integer overflow in check_overflow in common.c

References

← Back to latest CVEs