NVD / CVE Program· CNA Linux

CVE-2022-50384: staging: vme_user: Fix possible UAF in tsi148_dma_list_add

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: 0.17% (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 1f5661388f43df3ac106ce93e67d8d22b16a78ff, 357057ee55d3c99a5de5abe8150f7bca04f8e53b, 51c0ad3b7c5b01f9314758335a13f157b05fa56d.

Low priority for now. Upgrade to Linux Linux 1f5661388f43df3ac106ce93e67d8d22b16a78ff, 357057ee55d3c99a5de5abe8150f7bca04f8e53b, 51c0ad3b7c5b01f9314758335a13f157b05fa56d 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: staging: vme_user: Fix possible UAF in tsi148_dma_list_add Smatch report warning as follows: drivers/staging/vme_user/vme_tsi148.c:1757 tsi148_dma_list_add() warn: '&entry->list' not removed from list In tsi148_dma_list_add(), the error path "goto err_dma" will not remove entry->list from list->entries, but entry will be freed, then list traversal may cause UAF. Fix by removeing it from list->entries before free().

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

BDU:2026-02371

Published: Sep 18, 2025
Updated: Aug 5, 2026
EPSS: 0.1% · 6th percentile
CWE: CWE-416

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.1%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 7.8
CNA · Linux: 7.8; agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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.

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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 kernel4.2 and later · before 4.9.337
linux linux kernel4.10 and later · before 4.14.303
linux linux kernel4.15 and later · before 4.19.270
linux linux kernel4.20 and later · before 5.4.229
linux linux kernel5.5 and later · before 5.10.163
linux linux kernel5.11 and later · before 5.15.86
linux linux kernel5.16 and later · before 6.0.16
linux linux kernel6.1 and later · before 6.1.2

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
- 4.2affected
- b2383c90a9d691201b9aee557776694cde86a935 and later · before 5cc4eea715a3fcf4e516662f736dfee63979465faffected · git
- b2383c90a9d691201b9aee557776694cde86a935 and later · before 51c0ad3b7c5b01f9314758335a13f157b05fa56daffected · git
- b2383c90a9d691201b9aee557776694cde86a935 and later · before e6b0adff99edf246ba1f8d464530a0438cb1cbdaaffected · git
- b2383c90a9d691201b9aee557776694cde86a935 and later · before a45ba33d398a821147d7e5f16ead7eb125e331e2affected · git
- b2383c90a9d691201b9aee557776694cde86a935 and later · before 5d2b286eb034af114f67d9967fc3fbc1829bb712affected · git
- b2383c90a9d691201b9aee557776694cde86a935 and later · before 1f5661388f43df3ac106ce93e67d8d22b16a78ffaffected · git
- b2383c90a9d691201b9aee557776694cde86a935 and later · before cf138759a7e92c75cfc1b7ba705e4108fe330edfaffected · git
- b2383c90a9d691201b9aee557776694cde86a935 and later · before 85db68fc901da52314ded80aace99f8b684c7815affected · git
- b2383c90a9d691201b9aee557776694cde86a935 and later · before 357057ee55d3c99a5de5abe8150f7bca04f8e53baffected · git

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 6.1.4-1	6.1.4-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
90Now
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

Published before and after this one in the same product

← EarlierCVE-2022-50382Sep 18, 2025 · padata: Always leave BHs disabled when running ->parallel()
22Monitor
← EarlierCVE-2022-50383Sep 18, 2025 · media: mediatek: vcodec: Can't set dst buffer to done when lat decode error
22Monitor
Later →CVE-2022-50385Sep 18, 2025 · NFS: Fix an Oops in nfs_d_automount()
22Monitor

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	1f5661388f43df3ac106ce93e67d8d22b16a78ff	Vendor (CNA)
Linux Linux	357057ee55d3c99a5de5abe8150f7bca04f8e53b	Vendor (CNA)
Linux Linux	51c0ad3b7c5b01f9314758335a13f157b05fa56d	Vendor (CNA)
Linux Linux	5cc4eea715a3fcf4e516662f736dfee63979465f	Vendor (CNA)
Linux Linux	5d2b286eb034af114f67d9967fc3fbc1829bb712	Vendor (CNA)
Linux Linux	85db68fc901da52314ded80aace99f8b684c7815	Vendor (CNA)
Linux Linux	a45ba33d398a821147d7e5f16ead7eb125e331e2	Vendor (CNA)
Linux Linux	cf138759a7e92c75cfc1b7ba705e4108fe330edf	Vendor (CNA)
Linux Linux	e6b0adff99edf246ba1f8d464530a0438cb1cbda	Vendor (CNA)
debian:linux	6.1.4-1 · 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.

No history yet (it accumulates with the daily EPSS job).

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, 10:08 PM UTC

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

References

git.kernel.org/stable/c/1f5661388f43df3ac106ce93e67d8d22b16a78ff

Show all references (8 more)

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

All records