CVE-2025-9396: A security flaw has been discovered in ckolivas lrzip up to 0.651

Q: How do I fix CVE-2025-9396?

lrzip: upgrade to newer than 0.651. Exact commands for each OS are on this page.

Q: Is CVE-2025-9396 being exploited?

CVE-2025-9396 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-9396 affect?

CVE-2025-9396 affects lrzip. Severity is low (CVSS 3.3). A security flaw has been discovered in ckolivas lrzip up to 0.651. This impacts the function __GI_____strtol_l_internal of the file strtol_l.c. Performing manipulation results in null pointer dereference. The attack is only possible with lo

Q: How urgent is CVE-2025-9396?

Priority 22/100. Public exploit reference

Routine

LOW 3.3UPGRADE

CVE-2025-9396 is a low-severity flaw (CVSS 3.3) affecting lrzip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A security flaw has been discovered in ckolivas lrzip up to 0.651. This impacts the function __GI_____strtol_l_internal of the file strtol_l.c. Performing manipulation results in null pointer dereference. The attack is only possible with local access. The exploit has been released to the public and may be exploited.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	3.3 (Low)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-404, CWE-476
Published	2025-08-24
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: ckolivas

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

Am I affected?

Timeline

2025-08-24 23:15 UTCPublished CVE record published
2026-06-17 10:08 UTCUpdated Record last modified

ckolivas lrzip UPGRADE

Affected: <= 0.651

Fixed in: newer than 0.651

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.651 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade lrzip

Note

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

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-2025-9396?

lrzip: upgrade to newer than 0.651. Exact commands for each OS are on this page.

Is CVE-2025-9396 being exploited?

CVE-2025-9396 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-2025-9396 affect?

CVE-2025-9396 affects lrzip. Severity is low (CVSS 3.3). A security flaw has been discovered in ckolivas lrzip up to 0.651. This impacts the function __GI_____strtol_l_internal of the file strtol_l.c. Performing manipulation results in null pointer dereference. The attack is only possible with lo

How urgent is CVE-2025-9396?

Priority 22/100. Public exploit reference

Related CVEs

CVE-2025-15571 LOW 3.3 UPGRADE A security vulnerability has been detected in ckolivas lrzip up to 0.651
CVE-2025-15570 MEDIUM 5.3 UPGRADE A vulnerability was found in ckolivas lrzip up to 0.651

References

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