NVD / CVE Program· CNA Linux

CVE-2022-50245: rapidio: fix possible UAF when kfifo_alloc() fails

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 02d7d89f816951e0862147d751b1150d67aaebdd, 2a6c75adf8192f07ddcdd4a1a13488c890a73919, 2ba06e57f933f0eac242e8b389433da1cc00d4d5.

Low priority for now. Upgrade to Linux Linux 02d7d89f816951e0862147d751b1150d67aaebdd, 2a6c75adf8192f07ddcdd4a1a13488c890a73919, 2ba06e57f933f0eac242e8b389433da1cc00d4d5 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: rapidio: fix possible UAF when kfifo_alloc() fails If kfifo_alloc() fails in mport_cdev_open(), goto err_fifo and just free priv. But priv is still in the chdev->file_list, then list traversal may cause UAF. This fixes the following smatch warning: drivers/rapidio/devices/rio_mport_cdev.c:1930 mport_cdev_open() warn: '&priv->list' not removed from list

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

BDU:2026-09309

Published: Sep 15, 2025
Updated: Jun 17, 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%

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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 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
- 4.6affected
- e8de370188d098bb49483c287b44925957c3c9b6 and later · before 2a6c75adf8192f07ddcdd4a1a13488c890a73919affected · git
- e8de370188d098bb49483c287b44925957c3c9b6 and later · before 2dfd60724d271a6ab99f93f40f38f2ced1ddbb87affected · git
- e8de370188d098bb49483c287b44925957c3c9b6 and later · before a253dde0403a153075ffb254f6f7b2635e49e97aaffected · git
- e8de370188d098bb49483c287b44925957c3c9b6 and later · before 311b488405ac45af46756b1c8f1d27007b68b07eaffected · git
- e8de370188d098bb49483c287b44925957c3c9b6 and later · before 5ee850645e42f541ce1ea8130c2b27cc495f965caffected · git
- e8de370188d098bb49483c287b44925957c3c9b6 and later · before 2f5cc7fd73fd6253cc71214f0dd499cc62feb469affected · git
- e8de370188d098bb49483c287b44925957c3c9b6 and later · before 2ba06e57f933f0eac242e8b389433da1cc00d4d5affected · git
- e8de370188d098bb49483c287b44925957c3c9b6 and later · before cb87af2c19c0993f6e21f75b963a5599c5a73e76affected · git
- e8de370188d098bb49483c287b44925957c3c9b6 and later · before 02d7d89f816951e0862147d751b1150d67aaebddaffected · 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-2022-50243Sep 15, 2025 · sctp: handle the error returned from sctp_auth_asoc_init_active_key
31Monitor
← EarlierCVE-2022-50244Sep 15, 2025 · cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()
22Monitor
Later →CVE-2022-50246Sep 15, 2025 · usb: typec: tcpci: fix of node refcount leak in tcpci_register_port()
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	02d7d89f816951e0862147d751b1150d67aaebdd	Vendor (CNA)
Linux Linux	2a6c75adf8192f07ddcdd4a1a13488c890a73919	Vendor (CNA)
Linux Linux	2ba06e57f933f0eac242e8b389433da1cc00d4d5	Vendor (CNA)
Linux Linux	2dfd60724d271a6ab99f93f40f38f2ced1ddbb87	Vendor (CNA)
Linux Linux	2f5cc7fd73fd6253cc71214f0dd499cc62feb469	Vendor (CNA)
Linux Linux	311b488405ac45af46756b1c8f1d27007b68b07e	Vendor (CNA)
Linux Linux	5ee850645e42f541ce1ea8130c2b27cc495f965c	Vendor (CNA)
Linux Linux	a253dde0403a153075ffb254f6f7b2635e49e97a	Vendor (CNA)
Linux Linux	cb87af2c19c0993f6e21f75b963a5599c5a73e76	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, 10:10 PM UTC

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

References

git.kernel.org/stable/c/02d7d89f816951e0862147d751b1150d67aaebdd

Show all references (8 more)

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

All records