CVE-2026-31053: A double free vulnerability exists in librz/bin/format/le/le.c in the function le_load_fixup_record()

Routine

MEDIUM 6.2DOWNGRADE

CVE-2026-31053 is a medium-severity flaw (CVSS 6.2) affecting rizin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A double free vulnerability exists in librz/bin/format/le/le.c in the function le_load_fixup_record(). When processing malformed or circular LE fixup chains, relocation entries may be freed multiple times during error handling. A specially crafted LE binary can trigger heap corruption and cause the application to crash, resulting in a denial-of-service condition. An attacker with a crafted binary could cause a denial of service when the tool is i

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.2 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.1% (top 96%)
CISA exploited list	No
Weakness	CWE-415
Published	2026-04-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: rizin

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

Am I affected?

Timeline

2026-04-06 15:17 UTCPublished CVE record published
2026-06-17 10:33 UTCUpdated Record last modified

rizin rizin DOWNGRADE

Affected: 0.8.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.8.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.8.1 (Debian / Ubuntu)

apt-cache madison rizin sudo apt install rizin=<VERSION_BEFORE_0.8.1> sudo apt-mark hold rizin

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

dnf --showduplicates list rizin sudo dnf downgrade rizin-<VERSION_BEFORE_0.8.1> sudo dnf versionlock add rizin

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-2026-31053?

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

Is CVE-2026-31053 being exploited?

CVE-2026-31053 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-2026-31053 affect?

CVE-2026-31053 affects rizin. Severity is medium (CVSS 6.2). A double free vulnerability exists in librz/bin/format/le/le.c in the function le_load_fixup_record(). When processing malformed or circular LE fixup chains, relocation entries may be freed multiple times during error handling. A specially

How urgent is CVE-2026-31053?

Priority 28/100. Public exploit reference

References

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