CVE-2022-23066: In Solana rBPF versions 0.2.26 and 0.2.27 are affected by Incorrect Calculation which is caused by improper im

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CRITICAL 9.1REMOTEDOWNGRADE

CVE-2022-23066 is a critical-severity flaw (CVSS 9.1) affecting rbpf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Solana rBPF versions 0.2.26 and 0.2.27 are affected by Incorrect Calculation which is caused by improper implementation of sdiv instruction. This can lead to the wrong execution path, resulting in huge loss in specific cases. For example, the result of a sdiv instruction may decide whether to transfer tokens or not. The vulnerability affects both integrity and may cause serious availability problems.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.5% (top 15%)
CISA exploited list	No
Weakness	CWE-682
Published	2022-05-09
Last modified	2026-06-17

Publisher (CNA): Mend · Vendor: solana

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

Am I affected?

Timeline

2022-05-09 07:15 UTCPublished CVE record published
2026-06-17 04:29 UTCUpdated Record last modified

solana rbpf DOWNGRADE

Affected: 0.2.26 · 0.2.27

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.2.26

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.2.26 (Debian / Ubuntu)

apt-cache madison rbpf sudo apt install rbpf=<VERSION_BEFORE_0.2.26> sudo apt-mark hold rbpf

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list rbpf sudo dnf downgrade rbpf-<VERSION_BEFORE_0.2.26> sudo dnf versionlock add rbpf

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.

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-2022-23066?

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

Is CVE-2022-23066 being exploited?

CVE-2022-23066 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-2022-23066 affect?

CVE-2022-23066 affects rbpf. Severity is critical (CVSS 9.1). In Solana rBPF versions 0.2.26 and 0.2.27 are affected by Incorrect Calculation which is caused by improper implementation of sdiv instruction. This can lead to the wrong execution path, resulting in huge loss in specific cases. For example

How urgent is CVE-2022-23066?

Priority 63/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-31264 HIGH 7.5 UPGRADE Solana solana_rbpf before 0.2.29 has an addition integer overflow via invalid ELF program headers
CVE-2021-46102 HIGH 7.5 UPGRADE From version 0.2.14 to 0.2.16 for Solana rBPF, function "relocate" in the file src/elf.rs has an integer overf

References

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