CVE-2023-52838· NVD / CVE Program· CNA Linux

fbdev: imsttfb: fix a resource leak in probe

Noroxi assessment

Priority: Monitor (action score 24/100)

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: 0.25% (FIRST EPSS).
Someone with local access to the system can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 18d26f9baca7d0d309303e3074a2252b8310884a, 382e1931e0c9cd58a5a8519cdc6cd9dc4d82b485, 4.15.

Low priority for now. Upgrade to Linux Linux 18d26f9baca7d0d309303e3074a2252b8310884a, 382e1931e0c9cd58a5a8519cdc6cd9dc4d82b485, 4.15 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: fbdev: imsttfb: fix a resource leak in probe I've re-written the error handling but the bug is that if init_imstt() fails we need to call iounmap(par->cmap_regs).

MediumCVSS 6.2 · v3.1—No exploit Fix available

BDU:2024-10252

Published: May 21, 2024
Updated: Jun 17, 2026
EPSS: 0.2% · 15th percentile
CWE: CWE-416

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 24 / 40 · 6.2 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

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

If any of these changes, we'll tell you in the daily email digest.

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

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.

We use this product, ask for help

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 kernel4.14.322 and later · before 4.15
linux linux kernel4.19.291 and later · before 4.19.299
linux linux kernel5.4.251 and later · before 5.4.261
linux linux kernel5.10.188 and later · before 5.10.201
linux linux kernel5.15.116 and later · before 5.15.139
linux linux kernel6.1.33 and later · before 6.1.63
linux linux kernel6.3.7 and later · before 6.5.12
linux linux kernel6.6 and later · before 6.6.2

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
- 64c6b84c73f576380fadeec2d30aaeccbc2994c7, 4c86974fb42281b8041a504d92ab341ad4697325, 6.4affected
- 7f683f286a2196bd4d2da420a3194f5ba0269d8c and later · before 382e1931e0c9cd58a5a8519cdc6cd9dc4d82b485affected · git
- 815c95d82b79bb32e9aa7c95c6ac7cb1c92612cd and later · before 6c66d737b2726ac7784269ddf32a31634f8f269daffected · git
- 2bf70b88cc358a437db376826f92c8dcf9c23587 and later · before a4dfebec32ec6d420a5506dd56a7834c91be28e4affected · git
- ad3de274e065790181f112b9c72a2fb4665ee2fd and later · before 8e4b510fe91782522b7ca0ca881b663b5d35e513affected · git
- c6c0a9f619584be19726ce7f81c31bc555af401a and later · before 7bc7b82fb2191b0d50a80ee4e27030918767dd1daffected · git
- c75f5a55061091030a13fef71b9995b89bc86213 and later · before 18d26f9baca7d0d309303e3074a2252b8310884aaffected · git
- c75f5a55061091030a13fef71b9995b89bc86213 and later · before b346a531159d08c564a312a9eaeea691704f3c00affected · git
- c75f5a55061091030a13fef71b9995b89bc86213 and later · before aba6ab57a910ad4b940c2024d15f2cdbf5b7f76baffected · git
- 4.19.291 and later · before 4.19.299affected · 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 6.1.64-1	6.1.64-1
Debian:13	linux	before 6.6.8-1	6.6.8-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

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
89Now
CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
85Now
CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
83Now

Published before and after this one in the same product

← EarlierCVE-2023-52836May 21, 2024 · locking/ww_mutex/test: Fix potential workqueue corruption
31Monitor
← EarlierCVE-2023-52837May 21, 2024 · nbd: fix uaf in nbd_open
31Monitor
Later →CVE-2023-52839May 21, 2024 · drivers: perf: Do not broadcast to other cpus when starting a counter
13Monitor

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	18d26f9baca7d0d309303e3074a2252b8310884a	Vendor (CNA)
Linux Linux	382e1931e0c9cd58a5a8519cdc6cd9dc4d82b485	Vendor (CNA)
Linux Linux	4.15	Vendor (CNA)
Linux Linux	4.19.299	Vendor (CNA)
Linux Linux	5.10.201	Vendor (CNA)
Linux Linux	5.15.139	Vendor (CNA)
Linux Linux	5.4.261	Vendor (CNA)
Linux Linux	6.1.63	Vendor (CNA)
Linux Linux	6.4	Vendor (CNA)
Linux Linux	6c66d737b2726ac7784269ddf32a31634f8f269d	Vendor (CNA)
Linux Linux	7bc7b82fb2191b0d50a80ee4e27030918767dd1d	Vendor (CNA)
Linux Linux	8e4b510fe91782522b7ca0ca881b663b5d35e513	Vendor (CNA)
Linux Linux	a4dfebec32ec6d420a5506dd56a7834c91be28e4	Vendor (CNA)
Linux Linux	aba6ab57a910ad4b940c2024d15f2cdbf5b7f76b	Vendor (CNA)
Linux Linux	b346a531159d08c564a312a9eaeea691704f3c00	Vendor (CNA)
debian:linux	6.1.64-1 · 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.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: high · the service can be disrupted

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

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

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

nvd-secondary

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/18d26f9baca7d0d309303e3074a2252b8310884a

Show all references (7 more)

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

All records