CVE-2024-10396: An authenticated user can provide a malformed ACL to the fileserver's StoreACL RPC, causing the fileserver to

Routine

MEDIUM 6.5UPGRADE

CVE-2024-10396 is a medium-severity flaw (CVSS 6.5) affecting openafs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An authenticated user can provide a malformed ACL to the fileserver's StoreACL RPC, causing the fileserver to crash, possibly expose uninitialized memory, and possibly store garbage data in the audit log. Malformed ACLs provided in responses to client FetchACL RPCs can cause client processes to crash and possibly expose uninitialized memory into other ACLs stored on the server.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-772
Published	2024-11-14
Last modified	2026-06-17

Publisher (CNA): Fedora Project · Vendor: openafs

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

Am I affected?

Timeline

2024-11-14 20:15 UTCPublished CVE record published
2026-06-17 06:55 UTCUpdated Record last modified

openafs openafs UPGRADE

Affected: >= 1.0 and < 1.6.25 · >= 1.8.0 and < 1.8.13 · 1.9.0

Fixed in: 1.6.25, 1.8.13

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. UPGRADE to 1.6.25 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openafs

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 1.0 (Debian / Ubuntu)

apt-cache madison openafs sudo apt install openafs=<VERSION_BEFORE_1.0> sudo apt-mark hold openafs

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

dnf --showduplicates list openafs sudo dnf downgrade openafs-<VERSION_BEFORE_1.0> sudo dnf versionlock add openafs

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-2024-10396?

openafs: upgrade to 1.6.25, 1.8.13. Exact commands for each OS are on this page.

Is CVE-2024-10396 being exploited?

CVE-2024-10396 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-2024-10396 affect?

CVE-2024-10396 affects openafs. Severity is medium (CVSS 6.5). An authenticated user can provide a malformed ACL to the fileserver's StoreACL RPC, causing the fileserver to crash, possibly expose uninitialized memory, and possibly store garbage data in the audit log. Malformed ACLs provided in response

How urgent is CVE-2024-10396?

Priority 34/100. No elevated risk signals yet.

Related CVEs

CVE-2024-10397 HIGH 7.8 UPGRADE A malicious server can crash the OpenAFS cache manager and other client utilities, and possibly execute arbitr
CVE-2024-10394 HIGH 7.8 UPGRADE A local user can bypass the OpenAFS PAG (Process Authentication Group) throttling mechanism in Unix clients, a

References

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