NVD / CVE Program· CNA Linux

CVE-2024-57892: ocfs2: fix slab-use-after-free due to dangling pointer dqi_priv

Noroxi assessment

Priority: Monitor (action score 31/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 2d431192486367eee03cc28d0b53b97dafcb8e63, 2e3d203b1adede46bbba049e497765d67865be18, 58f9e20e2a7602e1dd649a1ec4790077c251cb6c; azl3 kernel 6.6.64.2-9 on Azure Linux 3.0 6.6.76.1-1.

Low priority for now. Upgrade to Linux Linux 2d431192486367eee03cc28d0b53b97dafcb8e63, 2e3d203b1adede46bbba049e497765d67865be18, 58f9e20e2a7602e1dd649a1ec4790077c251cb6c; azl3 kernel 6.6.64.2-9 on Azure Linux 3.0 6.6.76.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix slab-use-after-free due to dangling pointer dqi_priv When mounting ocfs2 and then remounting it as read-only, a slab-use-after-free occurs after the user uses a syscall to quota_getnextquota. Specifically, sb_dqinfo(sb, type)->dqi_priv is the dangling pointer. During the remounting process, the pointer dqi_priv is freed but is never set as null leaving it to be accessed. Additionally, the read-only option for remounting sets the DQUOT_SUSPENDED flag instead of setting the DQUOT_USAGE_ENABLED flags. Moreover, later in the process of getting the next quota, the function ocfs2_get_next_id is called and only checks the quota usage flags and not the quota suspended flags. To fix this, I set dqi_priv to null when it is freed after remounting with read-only and put a check for DQUOT_SUSPENDED in ocfs2_get_next_id. [akpm@linux-foundation.org: coding-style cleanups]

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

Published: Jan 15, 2025
Updated: Jun 17, 2026
EPSS: 0.2% · 12th percentile
CWE: CWE-416

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

linux linux kernel4.6 and later · before 6.1.125
linux linux kernel6.2 and later · before 6.6.70
linux linux kernel6.7 and later · before 6.12.9
linux linux kernel6.13

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

Linux Linux
- 4.6affected
- 8f9e8f5fcc059a3cba87ce837c88316797ef3645 and later · before 58f9e20e2a7602e1dd649a1ec4790077c251cb6caffected · git
- 8f9e8f5fcc059a3cba87ce837c88316797ef3645 and later · before 8ff6f635a08c30559ded0c110c7ce03ba7747d11affected · git
- 8f9e8f5fcc059a3cba87ce837c88316797ef3645 and later · before f44e6d70c100614c211703f065cad448050e4a0eaffected · git
- 8f9e8f5fcc059a3cba87ce837c88316797ef3645 and later · before 2d431192486367eee03cc28d0b53b97dafcb8e63affected · git
- 8f9e8f5fcc059a3cba87ce837c88316797ef3645 and later · before 2e3d203b1adede46bbba049e497765d67865be18affected · git
- 8f9e8f5fcc059a3cba87ce837c88316797ef3645 and later · before ba950a02d8d23811aa1120affd3adedcfac6153daffected · git
- 8f9e8f5fcc059a3cba87ce837c88316797ef3645 and later · before 5f3fd772d152229d94602bca243fbb658068a597affected · git
- before 4.6not affected · semver
- 5.4.290 and later · up to and including 5.4.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 6.1.128-1	6.1.128-1
Debian:13	linux	before 6.12.9-1	6.12.9-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

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CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
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CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
85Now

Published before and after this one in the same product

← EarlierCVE-2024-57890Jan 15, 2025 · RDMA/uverbs: Prevent integer overflow issue
22Monitor
← EarlierCVE-2024-57891Jan 15, 2025 · sched_ext: Fix invalid irq restore in scx_ops_bypass()
22Monitor
Later →CVE-2024-57893Jan 15, 2025 · ALSA: seq: oss: Fix races at processing SysEx messages
25Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Linux Linux	2d431192486367eee03cc28d0b53b97dafcb8e63	Vendor (CNA)
Linux Linux	2e3d203b1adede46bbba049e497765d67865be18	Vendor (CNA)
Linux Linux	58f9e20e2a7602e1dd649a1ec4790077c251cb6c	Vendor (CNA)
Linux Linux	5f3fd772d152229d94602bca243fbb658068a597	Vendor (CNA)
Linux Linux	8ff6f635a08c30559ded0c110c7ce03ba7747d11	Vendor (CNA)
Linux Linux	ba950a02d8d23811aa1120affd3adedcfac6153d	Vendor (CNA)
Linux Linux	f44e6d70c100614c211703f065cad448050e4a0e	Vendor (CNA)
azl3 kernel 6.6.64.2-9 on Azure Linux 3.0	6.6.76.1-1 · CBL-Mariner Releases	Microsoft (MSRC)
debian:linux	6.1.128-1 · Debian:12	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

Fix✗ → ✓Sep 28, 2026, 10:11 PM UTC

For records you follow, these changes also arrive as notifications. →

References

git.kernel.org/stable/c/2d431192486367eee03cc28d0b53b97dafcb8e63

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records