CVE-2022-50282· NVD / CVE Program· CNA Linux

chardev: fix error handling in cdev_device_add()

Noroxi assessment

Priority: Monitor (action score 22/100)

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: 0.18% (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 11fa7fefe3d8fac7da56bc9aa3dd5fb3081ca797, 28dc61cc49c6e995121c6d86bef4b73df78dda80, 3.17.

Low priority for now. Upgrade to Linux Linux 11fa7fefe3d8fac7da56bc9aa3dd5fb3081ca797, 28dc61cc49c6e995121c6d86bef4b73df78dda80, 3.17 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: chardev: fix error handling in cdev_device_add() While doing fault injection test, I got the following report: ------------[ cut here ]------------ kobject: '(null)' (0000000039956980): is not initialized, yet kobject_put() is being called. WARNING: CPU: 3 PID: 6306 at kobject_put+0x23d/0x4e0 CPU: 3 PID: 6306 Comm: 283 Tainted: G W 6.1.0-rc2-00005-g307c1086d7c9 #1253 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 RIP: 0010:kobject_put+0x23d/0x4e0 Call Trace: <TASK> cdev_device_add+0x15e/0x1b0 __iio_device_register+0x13b4/0x1af0 [industrialio] __devm_iio_device_register+0x22/0x90 [industrialio] max517_probe+0x3d8/0x6b4 [max517] i2c_device_probe+0xa81/0xc00 When device_add() is injected fault and returns error, if dev->devt is not set, cdev_add() is not called, cdev_del() is not needed. Fix this by checking dev->devt in error path.

MediumCVSS 5.5 · v3.1—No exploit Fix available

Published: Sep 15, 2025
Updated: Jun 17, 2026
EPSS: 0.1% · 7th percentile
CWE: CWE-908

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 22 / 40 · 5.5 / 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 kernel3.16.83 and later · before 3.17
linux linux kernel4.4.224 and later · before 4.5
linux linux kernel4.9.224 and later · before 4.9.337
linux linux kernel4.12 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
- f78b54e7d83c7879f9a6e49e6724019ca34177cc, d79d7d5c878809964da537336dad5ff55fa1605e, 4.12affected
- da97a80a657d1b1b50ef633e8ff5dbf0d417fc8d and later · before 5d2146889fad4cb9e6c13e790d4cfd871486eca8affected · git
- 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 and later · before 6acf8597c5b04f455ee0649e11e5f3bcd28f381eaffected · git
- 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 and later · before 34d17b39bceef25e4cf9805cd59250ae05d0a139affected · git
- 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 and later · before d85b5247a79355b8432bfd9ac871f96117f750d4affected · git
- 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 and later · before c46db6088bccff5115674d583fef46ede80077a2affected · git
- 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 and later · before 28dc61cc49c6e995121c6d86bef4b73df78dda80affected · git
- 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 and later · before b5de1eac71fec1af7723f1083d23a24789fd795caffected · git
- 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 and later · before 85a5660491b507d33662b8e81c142e6041e642ebaffected · git
- 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 and later · before 11fa7fefe3d8fac7da56bc9aa3dd5fb3081ca797affected · 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
SUSE:Linux Enterprise Live Patching 12 SP5	kernel-default	before 4.12.14-122.275.1	4.12.14-122.275.1
SUSE:Linux Enterprise Live Patching 12 SP5	kgraft-patch-SLE12-SP5_Update_73	before 1-8.3.1	1-8.3.1
SUSE:Linux Enterprise Micro 5.2	kernel-default	before 5.3.18-150300.59.232.1	5.3.18-150300.59.232.1
SUSE:Linux Enterprise Micro 5.2	kernel-default-base	before 5.3.18-150300.59.232.1.150300.18.138.1	5.3.18-150300.59.232.1.150300.18.138.1
SUSE:Linux Enterprise Micro 5.2	kernel-rt	before 5.3.18-150300.232.1	5.3.18-150300.232.1
SUSE:Linux Enterprise Micro 5.2	kernel-source-rt	before 5.3.18-150300.232.1	5.3.18-150300.232.1
SUSE:Linux Enterprise Server 12 SP5-LTSS	kernel-source	before 4.12.14-122.275.1	4.12.14-122.275.1
SUSE:Linux Enterprise Server 12 SP5-LTSS	kernel-syms	before 4.12.14-122.275.1	4.12.14-122.275.1

Same product

linux: all records

Other highest-scoring records for the same primary product.

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CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
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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-2022-50280Sep 15, 2025 · pnode: terminate at peers of source
22Monitor
← EarlierCVE-2022-50281Sep 15, 2025 · MIPS: SGI-IP27: Fix platform-device leak in bridge_platform_create()
22Monitor
Later →CVE-2022-50283Sep 15, 2025 · mtd: core: add missing of_node_get() in dynamic partitions code
31Monitor

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	11fa7fefe3d8fac7da56bc9aa3dd5fb3081ca797	Vendor (CNA)
Linux Linux	28dc61cc49c6e995121c6d86bef4b73df78dda80	Vendor (CNA)
Linux Linux	3.17	Vendor (CNA)
Linux Linux	34d17b39bceef25e4cf9805cd59250ae05d0a139	Vendor (CNA)
Linux Linux	4.5	Vendor (CNA)
Linux Linux	4.9.337	Vendor (CNA)
Linux Linux	5d2146889fad4cb9e6c13e790d4cfd871486eca8	Vendor (CNA)
Linux Linux	6acf8597c5b04f455ee0649e11e5f3bcd28f381e	Vendor (CNA)
Linux Linux	85a5660491b507d33662b8e81c142e6041e642eb	Vendor (CNA)
Linux Linux	b5de1eac71fec1af7723f1083d23a24789fd795c	Vendor (CNA)
Linux Linux	c46db6088bccff5115674d583fef46ede80077a2	Vendor (CNA)
Linux Linux	d85b5247a79355b8432bfd9ac871f96117f750d4	Vendor (CNA)
debian:linux	6.1.4-1 · Debian:12	Package registry (OSV)
suse:kernel-default	4.12.14-122.275.1 · SUSE:Linux Enterprise Live Patching 12 SP5	Package registry (OSV)
suse:kernel-default-base	5.3.18-150300.59.232.1.150300.18.138.1 · SUSE:Linux Enterprise Micro 5.2	Package registry (OSV)
suse:kernel-rt	5.3.18-150300.232.1 · SUSE:Linux Enterprise Micro 5.2	Package registry (OSV)
suse:kernel-source	4.12.14-122.275.1 · SUSE:Linux Enterprise Server 12 SP5-LTSS	Package registry (OSV)
suse:kernel-source-rt	5.3.18-150300.232.1 · SUSE:Linux Enterprise Micro 5.2	Package registry (OSV)
suse:kernel-syms	4.12.14-122.275.1 · SUSE:Linux Enterprise Server 12 SP5-LTSS	Package registry (OSV)
suse:kgraft-patch-SLE12-SP5_Update_73	1-8.3.1 · SUSE:Linux Enterprise Live Patching 12 SP5	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.

CVE-2024-50302300 days apartHID: core: zero-initialize the report bufferKEV
52Plan
CVE-2026-52989282 days apartnvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
39Monitor
CVE-2026-53225283 days apartsctp: fix uninit-value in __sctp_rcv_asconf_lookup()
36Monitor
CVE-2024-47685329 days apartnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()
36Monitor
CVE-2026-53170283 days apartaccel/ethosu: reject DMA commands with uninitialized length
35Monitor
CVE-2026-43139233 days apartxfrm6: fix uninitialized saddr in xfrm6_get_saddr()
34Monitor

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

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

Weakness class (CWE)

CWE-908 · Use of Uninitialized Resource

CVSS vector

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

nvd-primary

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/11fa7fefe3d8fac7da56bc9aa3dd5fb3081ca797

Show all references (8 more)

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

All records