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NVD / CVE Program· CNA Linux

CVE-2022-49968: ieee802154/adf7242: defer destroy_workqueue call

Noroxi assessment

Priority: Monitor (action score 18/100)

  • 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. Special conditions such as timing or configuration are required.
  • Fixed version: Linux Linux 15f3b89bd521d5770d36a61fc04a77c293138ba6, 23a29932715ca43bceb2eae1bdb770995afe7271, 4.18.
  • Severity is disputed: the assigning authority (CNA) scores it 8.0, NVD 4.7.

Low priority for now. Upgrade to Linux Linux 15f3b89bd521d5770d36a61fc04a77c293138ba6, 23a29932715ca43bceb2eae1bdb770995afe7271, 4.18 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: ieee802154/adf7242: defer destroy_workqueue call There is a possible race condition (use-after-free) like below (FREE) | (USE) adf7242_remove | adf7242_channel cancel_delayed_work_sync | destroy_workqueue (1) | adf7242_cmd_rx | mod_delayed_work (2) | The root cause for this race is that the upper layer (ieee802154) is unaware of this detaching event and the function adf7242_channel can be called without any checks. To fix this, we can add a flag write at the beginning of adf7242_remove and add flag check in adf7242_channel. Or we can just defer the destructive operation like other commit 3e0588c291d6 ("hamradio: defer ax25 kfree after unregister_netdev") which let the ieee802154_unregister_hw() to handle the synchronization. This patch takes the second option. runs")

MediumCVSS 4.7 · v3.1—No exploit Fix available
Published
Jun 18, 2025
Updated
Aug 5, 2026
EPSS
0.2% · 13th percentile

Report tools

JSON

Action score

18

Monitor

Low priority for now.

CVSS
18 / 40 · 4.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CNA vs NVD score

NVD
4.7
CNA · Linux
8.0
3.3 point gap

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

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.

Follow CVE-2022-49968

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

VendorProduct
linuxlinux kernel

Affected versions

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

  • linux linux kernel4.17.19 and later · before 4.18
  • linux linux kernel4.18.1 and later · before 4.19.258
  • linux linux kernel4.20 and later · before 5.4.213
  • linux linux kernel5.5 and later · before 5.10.142
  • linux linux kernel5.11 and later · before 5.15.66
  • linux linux kernel5.16 and later · before 5.19.8
  • linux linux kernel4.18
  • linux linux kernel6.0

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

    • a2363e2d88bf50022ee643c49ee5d4f7e8c915ea, 4.18affected
    • 58e9683d14752debc6f22daf6b23e031787df31f and later · before dede80aaf01f4b6e8657d23726cb4a3da226ec4caffected · git
    • 58e9683d14752debc6f22daf6b23e031787df31f and later · before bed12d7531df1417fc92c691999ff95e03835008affected · git
    • 58e9683d14752debc6f22daf6b23e031787df31f and later · before 23a29932715ca43bceb2eae1bdb770995afe7271affected · git
    • 58e9683d14752debc6f22daf6b23e031787df31f and later · before 9f8558c5c642c62c450c98c99b7d18a709fff485affected · git
    • 58e9683d14752debc6f22daf6b23e031787df31f and later · before 15f3b89bd521d5770d36a61fc04a77c293138ba6affected · git
    • 58e9683d14752debc6f22daf6b23e031787df31f and later · before afe7116f6d3b888778ed6d95e3cf724767b9aedfaffected · git
    • 4.17.19 and later · before 4.18affected · semver
    • before 4.18not affected · semver
    • 4.19.258 and later · up to and including 4.19.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.0.2-16.0.2-1
SUSE:Linux Enterprise Live Patching 15 SP3kernel-defaultbefore 5.3.18-150300.59.211.15.3.18-150300.59.211.1
SUSE:Linux Enterprise Live Patching 15 SP3kernel-livepatch-SLE15-SP3_Update_59before 1-150300.7.3.11-150300.7.3.1
SUSE:Linux Enterprise Micro 5.1kernel-rtbefore 5.3.18-150300.214.15.3.18-150300.214.1
SUSE:Linux Enterprise Micro 5.1kernel-source-rtbefore 5.3.18-150300.214.15.3.18-150300.214.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-64kbbefore 5.3.18-150300.59.211.15.3.18-150300.59.211.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-default-basebefore 5.3.18-150300.59.211.1.150300.18.126.15.3.18-150300.59.211.1.150300.18.126.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-docsbefore 5.3.18-150300.59.211.15.3.18-150300.59.211.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-obs-buildbefore 5.3.18-150300.59.212.15.3.18-150300.59.212.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-preemptbefore 5.3.18-150300.59.211.15.3.18-150300.59.211.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-sourcebefore 5.3.18-150300.59.211.15.3.18-150300.59.211.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-symsbefore 5.3.18-150300.59.211.15.3.18-150300.59.211.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-zfcpdumpbefore 5.3.18-150300.59.211.15.3.18-150300.59.211.1

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-2022-49966Jun 18, 2025 · drm/amd/pm: add missing ->fini_microcode interface for Sienna Cichlid
    22Monitor
  • ← EarlierCVE-2022-49967Jun 18, 2025 · bpf: Fix a data-race around bpf_jit_limit.
    18Monitor
  • Later →CVE-2022-49969Jun 18, 2025 · drm/amd/display: clear optc underflow before turn off odm clock
    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 / packageFixed versionSource
Linux Linux15f3b89bd521d5770d36a61fc04a77c293138ba6Vendor (CNA)
Linux Linux23a29932715ca43bceb2eae1bdb770995afe7271Vendor (CNA)
Linux Linux4.18Vendor (CNA)
Linux Linux9f8558c5c642c62c450c98c99b7d18a709fff485Vendor (CNA)
Linux Linuxafe7116f6d3b888778ed6d95e3cf724767b9aedfVendor (CNA)
Linux Linuxbed12d7531df1417fc92c691999ff95e03835008Vendor (CNA)
Linux Linuxdede80aaf01f4b6e8657d23726cb4a3da226ec4cVendor (CNA)
debian:linux6.0.2-1 · Debian:12Package registry (OSV)
suse:kernel-64kb5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-default5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Live Patching 15 SP3Package registry (OSV)
suse:kernel-default-base5.3.18-150300.59.211.1.150300.18.126.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-docs5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-livepatch-SLE15-SP3_Update_591-150300.7.3.1 · SUSE:Linux Enterprise Live Patching 15 SP3Package registry (OSV)
suse:kernel-obs-build5.3.18-150300.59.212.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-preempt5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-rt5.3.18-150300.214.1 · SUSE:Linux Enterprise Micro 5.1Package registry (OSV)
suse:kernel-source5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-source-rt5.3.18-150300.214.1 · SUSE:Linux Enterprise Micro 5.1Package registry (OSV)
suse:kernel-syms5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-zfcpdump5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage 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.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

CVSS:3.1/AV:L/AC:H/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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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

References

Show all references (5 more)

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

All records